Archive for astronomy

The Hubble Ultra Deep Field in Three Dimensions

Posted in The Universe and Stuff with tags , , , on January 4, 2010 by telescoper

I came across this video about the Hubble Ultra Deep Field (which I have blogged about before) and thought you might enjoy it. I think it’s fairly self-explanatory too!

What is to be done?

Posted in Finance, Science Politics with tags , , , , , , , , on January 3, 2010 by telescoper

Just after December’s announcement of huge cuts in spending on science by the Science and Technology Facilities Council (STFC), the minister responsible, Lord Drayson, issued a Press release that included the following

… it has become clear to me that there are real tensions in having international science projects, large scientific facilities and UK grant giving roles within a single Research Council. It leads to grants being squeezed by increases in costs of the large international projects which are not solely within their control. I will work urgently with Professor Sterling, the STFC and the wider research community to find a better solution by the end of February 2010.

I’ve decided to post a few thoughts here under a deliberately bolshie title not because I think I have all the answers, but in the hope that somebody out there will come up with better suggestions.

Superficially the problem dates back to the formation of STFC in 2007 via the merger of the Particle Physics and Astronomy Research Council (PPARC) and the Council for the Central Laboratories of the Research Councils (CCLRC). Previously, PPARC had looked after particle physics and astronomy (including space science) and CCLRC had run large experimental facilities in other branches of science. The idea of merging them wasn’t silly. A large chunk of PPARC’s budget went on managing large facilities, especially ground based astronomical observatories, and it was probably hoped that it would be more efficient to put all these big expensive pieces of kit under the same roof (so to speak).

However, at the time, there was considerable discussion about what should happen with science grants. For example, physicists working in UK universities in areas outside astronomy and particle physics previously obtained research grants from the Engineering and Physical Sciences Research Council (EPSRC), along with chemists, engineers and even mathematicians. Some experimentalists working in these areas used facilities run by the CCLRC to do their work. However, astronomers and particle physicists got their grants from PPARC, the same organisation that ran their facilities and also paid subscriptions to international agencies such as CERN and ESA. These grants were often termed “exploitation”  or “responsive mode” grants; they involved funding for postdoctoral researchers and staff time used in analysing observational or experimental data and comprised relatively little money compared the the cost of the PPARC facilities themselves. PPARC also funded PhD studentships and postdoctoral fellowships under the umbrella of its Education and Training division, although needless to say all the Education and Training involved was done in host universities, not by PPARC itself.

The question was whether the new merged organisation, STFC should continue giving grants to university groups or whether they should be moved elsewhere, perhaps to EPSRC. At the time, most astronomers were keen to have their research grants administered by the same organisation that ran the facilities. I thought it made more sense to have research scientists all on the same footing when it came to funding and in any case thought there were too many absurd divisions between, say, general relativity (EPSRC) and relativistic astrophysics (PPARC), so I was among the (relatively few) dissenting voices at the time.

There were other reasons for my unease. One was that during a previously funding squeeze, PPARC had taken money from the grants line (the pot of money used for funding research groups) in order to balance the books, necessarily reducing the amount of science being done with its facilities. If STFC decided to do this it would probably cause even more pain, because grants would be an even smaller fraction of the budget in STFC than they were in PPARC. Those EPSRC physicists using CCLRC facilities seem to have managed pretty well so I didn’t really see the argument for astronomy and particle physics being inside STFC.  

The other reason for me wanting to keep research grants out of STFC was that the (then) new Chief Executive of PPARC, Keith Mason, had made no secret of the disdain he felt towards university-based astronomy groups and had stated on a number of occasions his opinion that there were too many astronomers in the United Kingdom. There are two flaws with this argument. One is that astronomy is essential to the viability of many physics departments because of its appeal to potential students; without it, many departments will fold. The other problem is that Mason’s claim that the number of astronomers had grown by 40% in a few years was simply bogus.  This attitude convinced me that he in particular would need only the slightest excuse to divert funds away from astronomy into areas such as space exploration.

It all seems a very distant memory now, but three years ago UK physics (including astronomy) was experiencing a time of relative plenty. The government had introduced a system whereby the research councils would fund research groups on the basis of the Full Economic Cost of the research, which meant more money coming into research groups that were successful at winning grants. The government increased funding for the councils to pay for this largesse and probably diminished the fear of another funding pinch. Astronomers and particle physicists also felt they would have more influence over future strategy in facility development by remaining within the same organisation. In the end what happened was that STFC not only kept the portfolio of astronomy and particle physics grants, but also acquired responsibility for nuclear physics from EPSRC.

But then, in 2007, just after STFC came into existence,  a major financial disaster broke: that year’s comprehensive spending review left the newly formed STFC with a huge gap in its finances. I don’t know why this happened but it was probably a combination of gross incompetence on behalf of the STFC Executive and deliberate action by persons higher up in the Civil Service. The subsequent behaviour of the Chief Executive of STFC led to a public dressing down by the House of Commons Select Committee and a complete loss of confidence in him by the scientific community. Miraculously, he survived. Unfortunately, so did the financial problems that are his responsibility. After two years of head-scratching, STFC has finally grasped the nettle and slashed its spending, including research grants,  in an attempt to balance the books.

I don’t like to say I told you so, but that’s exactly what I am doing. Everything that has happened was predictable given the initial conditions. You might argue that STFC wasn’t to know about the global economic downturn. In fact, I’d agree. However, the terrible cuts in the science budget we have seen have very little to do with that. They all stem from the period before the Credit Crunch even started. We still have the aftermath of that to look forward to. Unless something is done, grants will be hit again. Things are bad now, but will only get worse as long as the current arrangements persist.

Now, back to Lord Drayson’s press statement. He is of course right to say that there are tensions in putting large facilities and grant giving roles in the same organisation. That’s particularly true when it’s an organisation run by a one-man disaster area, but the main problem seems to me that actually doing science is very far down the list of priorities for STFC. The point I want to make is that by far the most of the very best science in the United Kingdom is actually done in university groups. Some of these groups use shiny new facilities but some continue to do first-rate research with older gear, not to mention us theorists who need very little in the way of facilities at all. What has happened is that the axe has fallen across the programme, apparently without regard for scientific value for money so that highly rated theory grants are being slashed along with those related to lower priority facilities.

Here it seems appropiate to make an aside to the effect that,  in my opinion, even taking into account the difficult financial circumstances in which it was done, the recent prioritisation review was completely botched. All the STFC advisory panels placed university research grants at the highest priority but the management has slashed them anyway. Moreover, instead of really biting the bullet and making tough decisions to shut down more facilities projects, they have kept as many of them going as possible (although with reduced budgets).  Cutting exploitation grants for the highest priority experiments was a particularly stupid decision. If STFC wanted to put science first, what they should have done is baled out of more facilities but preserved exploitation grants.  If that means abandoning whole areas of astronomy then that’s very sad, but surely it is better to do a smaller number of things well than a larger number of things poorly? Isn’t management meant to be about making difficult decisions?

I know this preamble has been a bit long-winded, but I think it’s necessary to see the background to what I’m going to propose. These are the steps I think need to be taken to put UK physics back on track.

First, the powers that be have to realise that university researchers are not just the icing on the cake when it comes to science. They actually do most of the science. The problem is that the way they are supported is a total mess. It’s called the dual support system, because the research councils pay 80% of the cost of research grants and Higher Education Funding Councils (i.e. HEFCE in England) are meant to provide the other 20%, but in reality it is a bureaucratic nightmare that subjects researchers to endless form-filling and costs hundreds of millions in wasteful duplication. The Research Councils already have well-managed systems to judge the quality of research grant applications, so why do we have to have the additional burden of a Research Assessment Exercise every few years on top of that? Just a few millions saved by slashing red tape could restore a large proportion of the physics grant budget.

What we need is a system that recognises the central importance of universities in science research. In order to safeguard this, research grants for all disciplines need to be adminstered organisations that cannot raid the funds allocated for this purpose to offset management failures elsewhere. The funds allocated to STFC under the Full Economic Cost system have already been systematically misappropriated in this way, and things will get worse unless something is done to protect them.

Moving grants from STFC to EPSRC would go part of the way, but I’m not a particular fan of the latter organisation’s heavy-handed top-down management style and gung ho enthusiasm for the  impact agenda which may be appropriate for applied sciences and engineering but surely doesn’t make any sense for, say, pure mathematics. I would prefer instead to see a new organisation, specifically intended to fund blue-skies scientific research in universities. This organisation would have a mission statement that  makes its remit clear, and it would take over grants, studentships and fellowships from STFC, EPSRC and possibly some of the other research councils, such as NERC.  The new outfit would need a suitable acronym, but I can’t think of a good one at the moment. Answers on a postcard.

As a further suggestion,  I think there’s a strong case to be made that HEFCE should be deprived of its responsibility for research funding. The apparatus of research assessment it uses is obviously  flawed, but why is it needed anyway? If the government believes that research is essential to universities, its policy on selectivity doesn’t make any sense. On the other hand, if it believes that university departments don’t need to be research groups then why shouldn’t the research funding element be administered by a reserch organisation? Even better, a new University Research Council along the lines I have suggested  could fund research at 100% of the Full Economic Cost instead of only 80%. The substantial cash saved by scrapping the RAE should be pumped into grants to be administered by the new organisation, reversing the recent savage cuts imposed by STFC.

And what should happen to STFC? Clearly there is still a role for an organisation to manage large experimental facilities. However, the fact that the UK is now going to have its own Space Agency should mean space science is taken out of the STFC remit.  The CERN and ESO subscriptions could continue to be managed by STFC along with other facilities, and it would in some cases commission projects in university research groups or industrial labs as it does now. Astronomers and particle physicists would continue to sit on its Board.  However, its status would change radically, in that it would become an organisation whose job is to manage facilities, not research. The tail will no longer be wagging the dog.

I very much doubt if these suggestions are at all in line with current political “thinking”. I don’t think politicians really appreciate the importance of research in universities, especially if its of the open-ended, blue-sky variety. The self-serving bureaucrats in RCUK and HEFCE won’t like it either, because the’ll all have to go and do something more useful.  But unless someone stands up for the university sector and does something to safeguard future funding then things are just going to go from bad to worse. This may be the last chance we have to avert a catastrophe.

I very much doubt if many of my fellow physicists or astronomers agree with my suggestion either. Not to worry. I’m used to being in a minority of one. However, even if this is the case I hope this somewhat lengthy post will at least get you thinking. I’d be interested in comments.

Astronomy Look-alikes, No. 7

Posted in Astronomy Lookalikes with tags , , on January 1, 2010 by telescoper

Setting aside the obvious tonsorial issues, I always felt that Andy Lawrence, the e-astronomer, bears more than a passing resemblance to Welsh comedian Griff Rhys Jones. Talks a bit like him too…

Famous Comedian

Famous Astronomer

Astronomy Look-alikes, No. 6

Posted in Astronomy Lookalikes with tags , , , , , on January 1, 2010 by telescoper

Staying close to home in Cardiff, I should point out for those who were previously unaware, that our very own Matt Griffin had another career before becoming Principal Investigator for the SPIRE instrument on Herschel. His most famous acting role was as the seedy landlord, Rigsby, in the 1970s situation comedy Rising Damp.

Professor Matt Griffin

Rigsby

Astronomy Look-alikes, No. 5

Posted in Astronomy Lookalikes with tags , , on January 1, 2010 by telescoper

Well, first things first: Happy New Year!

It will be back to work soon but in the meantime I’ll continue where I left off yesterday with these look-alikes. I’ve been pressured into doing this one (although I can’t really see it myself). Does anyone really think Steve Eales looks like Nicholas Cage?

Steve Eales

Nicholas Cage

Herschel Delivers the Goods

Posted in The Universe and Stuff with tags , , , on December 18, 2009 by telescoper

It’s a bit lower key than I’d hoped because of Wednesday’s catastrophic announcements, but some of the first science results from Herschel are now available online. I’ve taken most of the following text from our own Herschel Outreach site here at Cardiff University.

Herschel scientists are currently meeting in Madrid to present the results from the Science Demonstration Phase of the Herschel mission. This is the phase of the mission where the satellite and its instruments are stretched to their full capabilities. A number of results involving the SPIRE instrument and astronomers from the UK have been presented. Professor Matt Griffin, SPIRE Principal Investigator, said

The Herschel Science Demonstration meeting is what the SPIRE team has been looking forward to since the start of the project more than a decade ago, and the results being presented are even better than we dared hope before launch. Not only are the observatory and the instrument working very well, but it is already clear that in this unexplored region of the spectrum, the Universe is even more interesting than we thought.

As well as the images presented below, more scientific results are being presented at the meeting in Madrid, some of which will be shown here in due course. I’ll just show you a quick taster of a couple of the things Cardiff astronomers are looking at.

A region of the Virgo cluster as seen in optical light by Sloan Digital Sky Survey (left) and in far-infrared by SPIRE 250m image Image credit: SDSS (left), ESA/Herschel/HeViCS Key Project (right)

Above is a region of the Virgo cluster, a large cluster of galaxies around 50 million light-years from our galaxy. The left panel shows a region containing four galaxies in optical light, from the Sloan Digital Sky Survey, while the right panel shows the region as seen by SPIRE at 250mm. The galaxies in the Virgo cluster are kept together by their mutual gravitational attraction. However, the galaxies do move relative to each other, and when they pass close to each other they can pull gas and dust into clumps and streams which stretch between the galaxies. Dr Jonathan Davies, of Cardiff University, and Principle Investigator of the Herschel Virgo Cluster Survey, for which this image was taken, commented that “far-infrared observations such as this give us an unprecedented insight into the behaviour of gas and dust in galaxy clusters, and further observations should yield some very exciting results”. The area of emission above the galaxy NGC4435 is very faint as seen in optical light, but much brighter in the far-infrared as measured by SPIRE. Also notable from this region is the relative brightness of the galaxies NGC4406 and NGC4402. NGC4406 is a giant elliptical galaxy, and so very bright in the optical, but is almost invisible in the far-infrared. This shows that it has already used up the majority of its gas and dust in forming the stars.

SPIRE image of the GOODS-North region. Image credit: ESA/Herschel/HerMES Key Project

On the left is shown an area of sky called the “Great Observatory Origins Deep Survey” (GOODS), which has been observed by many telescopes at a range of wavelengths, and now by SPIRE in the far-infrared. It is an area of sky devoid of foreground objects, such as stars within our Galaxy, or any other nearby galaxies, and is a little larger than the area of the full moon as observed from Earth. The image is made from the three SPIRE bands, with red, green and blue corresponding to 500µm, 350µm and 250µm respectively. Every fuzzy blob in this image is a very distant galaxy, seen as they were 3—10 billion years ago when the star formation was very widely spread throughout the Universe. Dr Seb Oliver, of University of Sussex and PI of the HERMES survey for which this image was taken, said

Seeing such stunning images after just 14 hours of observations gives us high expectations for the full length observations over much larger regions of the Universe. This will give us a much clearer idea of how star formation has progressed throughout the history of the Universe.” The redder objects are either more distant, as the expansion of the Universe has stretched, the light more since it was emitted by the galaxy, or much cooler than the bluer galaxies. This is the first time much of the Cosmic Infrared Background, discovered in the 1990s, has been resolved into the individual galaxies. Studying these galaxies at this early stage of the Universe will allow astronomers to test their models of star and galaxy formation.

I’d add that although this is probably the least photogenic of the images just released, it’s the sort of thing that fascinates those of us of a statistical persuasion because it’s such a challenge to wring as much science as possible from data that test the limits of the instrument’s capabilities. However it takes a great deal of time and detailed analysis to do justice to the quantity and quality of the data that’s coming in from Herschel. If our grants  get cut then we’ll find it very difficult to deliver this science in a timely fashion, and that would be a ridiculous state of affairs given the investment that’s already gone in to building this marvellous observatory.

Day of Reckoning

Posted in Science Politics, The Universe and Stuff with tags , , , , , on December 16, 2009 by telescoper

10.45am. I came in this morning determined to get on with some work to distract my attention from the looming announcement of budget cuts from the Science & Technology Facilities Council (STFC). I was up nearly all night worrying about the future, especially for the current generation of postdocs whose careers I’m pretty sure are going to sacrificed in large numbers to balance the books. It reminded me a bit about a poem I posted a while ago: I could not sleep for thinking of the Sky STFC.

Anyway, I’ve spent over an hour trying to write one paragraph of the paper I’m trying to finish and I can’t settle so I thought I’d start a post, with the intention of updating it as the day goes on, the picture gets a bit clearer, and I become increasingly suicidal.

The actual announcement of the result of the prioritisation exercise will appear this afternoon on the STFC website here under the heading

STFC: Investing in the Future

Who said these guys don’t have a sense of humour? What’s underneath is currently completely blank. Hang on, they might have put the result up early in that case…

Most of the blogs and tweets I follow – at least those emanating from this side of the Atlantic – are about this today, so if you’d like to keep up here are some useful links:

Paul Crowther at Sheffield has kept up with all the ongoings and downturnings at STFC and you can expect him to understand it better and quicker than the rest of us  here.

There’s a very good (and nearly anonymous) post about all this on the blog To Left of Centre.

The e-astronomer (Andy Lawrence at the ROE)  has written about this and a lot of important people have commented on it.

Rob Simpson, a PhD student here in Cardiff,  is probably expressing the fears of many younger researchers as is Sarah Kendrew who gives a postdoc perspective.

There’s a list of things astronomical that are probably about to eat the dirt at this website. My bet is that everything on their list will go, plus more. The reason is that most of the things at the bottom of the prioritisation exercise are actually fairly cheap, so just closing a few won’t plug the gap. As a colleague of mine said the other day, “It’s a big shit sandwich, and we all have to take a bite.”

11.15am. If the phrase “going forward” appears anywhere on the STFC announcement page, then I won’t be responsible for my actions…

11.50am. WICKET! Prince c Collingwood b Swann 45. Oh sorry. Wrong blog.

12.08pm. Incoming transatlantic link from the Starving Economist, from whose page I’ve pulled the following comment:

So I’d almost forgotten that other countries are out there, facing the Great Recession as well, and making really stupid decisions in the face of it. IMHO one example of blatant incompetence in an economic sense is being perpetrated by none other than the UK. We kind of look up to them, don’t we? It’s the accent or something. But they are busy tossing some of their world-renowned science, and much of their past investment in such, out the door rather than restructure some of their government funding. Talk about inertia. Their astronomy program appears to be particularly hard-hit. Interesting way to close 2009, the International Year of Astronomy.

I couldn’t agree more. It also reminded that I haven’t made enough of the irony that this is indeed the International Year of Astronomy. For a lot of people it will be the last year they’ll be doing astronomy.

12.25pm. Meanwhile, our man in Madrid, Matt Griffin has been wowing the audience with some of the new results from Herschel. I hope to be able to post a few of them later when the official workshop results go live.

12.45pm. STFC operatives have been phoning project leaders this morning to tell them the bad news. Our head of school, Walter Gear, has got his phone call telling him that our attempt to resurrect Clover will not be funded. Disappointing, but not entirely unexpected…

13.15pm. It’s tea-time in sunny  South Africa (with the home side at 159-4) but here in Blighty it’s the long dark lunch break of the soul, waiting for news of the inevitable.

13.30pm. Half an hour to go. Most of the astronomers in the department have now left to travel to Madrid for the big workshop starting tomorrow. They tell me the new results probably won’t be available for public consumption until Friday (18th December). Nothing to sugar the pill, then.

13.55pm. I’m not often right, but I was wrong again. I’ve just noticed that there is already an ESA press release that includes this stunning image of a star-forming region in the constellation of Aquila made using both PACS and SPIRE observations. This is just a first look at part of an extended survey of stellar nurseries that Herschel will be undertaking over the forthcoming months.

14.00pm. And there were are, right on cue. Here is the announcement. As expected, there is a ridiculous attempt to put a positive spin on it all, but you will find immediately, sigh, another 10% cut in research grants to universities (on top of the 25% we already had) to reduce the amount of “exploitation”, plus 25% cuts in the number of PhD students and fellowships “mirroring the overall reduction in the programme”. I read that as meaning that STFC wants, in the long term, about 25% of the astronomers in the UK to go somewhere else and, preferably,  never come back.

I’ll post more when I’ve read the details.

14.10pm. So here’s a quick summary of what projects will be funded in (ground-based) astronomy:

Advanced LIGO, JCMT (to 2012), Gemini (until end 2012), ING (to 2012), KMOS, VISTA, Dark Energy Survey, E-ELT R&D, SKA R&D, SuperWASP, e-Merlin, Zeplin III; Total cost of £87m over 5 years

(the big surprise to me in there is  e-Merlin, which I thought would get the chop) and what won’t

Auger, Inverse Square Law, ROSA, ALMA regional centre, JIVE, Liverpool Telescope, UKIRT. Additional reduction imposed on ongoing projects of £16m. Total savings of £29m over 5 years

And on the space side we have the lucky ones:

Aurora, GAIA, Herschel, JWST-MIRI, LISA Pathfinder, Rosetta, Planck, ExoMars, Hinode, Cosmic Vision, Solar Orbiter, Stereo, Swift, Bepi-Colombo; Total cost of £114m over 5 years

and the losers

Cassini, Cluster, SOHO, Venus Express, XMM. Additional reduction imposed on ongoing projects of £28m. Total Savings of £42m over 5 years

Note that both Aurora and Bepi-Colombo were both rated very low on scientific grounds but have been retained in the programme, presumably for political reasons.

However, the big downside for everyone is the cut in university grants for “exploitation” that I mentioned above. STFC wants to have lots of expensive facilities, but doesn’t want to fund the modest among of staff needed to actually get science out of them. The stupidity of this decision is made even more depressing by its inevitability.

Even the top-rated projects are getting cuts to their funding. It just shows how little thinking is going on about the actual science that STCF is supposed to be supporting. Isn’t it a more sensible strategy to do a few things well, rather than a lot of things poorly? It’s a mess.

14.38pm. From a Cardiff perspective this is nowhere near as bad as it could have been, but is still pretty dire. The primary activities for our current astronomy programme, Herschel and Planck, are both very high in the priority list and the relativity group is relieved to see ground-based gravitational wave research, including Advanced LIGO, at the highest priority. Moreover, it looks like what I feared most of all – an immediate clawback of existing grants with consequent immediate redundancies – is not going to happen, owing to what appears to be a last-minute injection of funds from RCUK. We’re still looking at cash cuts though, and we’re vulnerable because so much of our research income comes from STFC.

14.43pm. Not on the STFC webpage, but it appears that they are not going to support LOFAR-UK either.

15.05pm. If you want to read the full outcome of the prioritisation exercise, in terms of a batting order of projects, you can download it here. It includes a recommendation that the top funded (alpha-5) projects should get a 15% cut and those at the next leveldown (alpha-4) should get a 20% cut. However, things will probably turn out worse than that because those cuts were suggested on the basis that only those projects would be funded at all. As it turns out, some alpha-3 projects have made it through also, so the cuts to the higher-rated projects must be larger to compensate. Mustn’t they?

15.24pm. I note that STFC have decided to carry on their programme of outreach activities:

Ongoing support for public outreach and science communication, through continuance of our award schemes and Fellowships, and public engagement and communications, helping to ensure new generations of children are enthused and inspired by science, and encouraged to continue study in science, technology, engineering and mathematics (STEM) subjects.

..so we can kick them in the teeth when they’ve just started a scientific career.

15.30pm. Press release, from Unelected Minister for Science and Innovation, Strategic Defence Acquisition Reform, and Formula 1 Car Racing,  Lord  Drayson of Twitter.  I quote:

… it has become clear to me that there are real tensions in having international science projects, large scientific facilities and UK grant giving roles within a single Research Council. It leads to grants being squeezed by increases in costs of the large international projects which are not solely within their control.   I will work urgently with Professor Sterling, the STFC and the wider research community to find a better solution by the end of February 2010.

Is there a possibility that a light has gone on somewhere to the effect that something must be done to stop STFC killing University research? I hope so. If he can pull something out of the fire before March 2010, though, I’d be very impressed.

16.07pm. I may be clutching at straws here, but it is interesting to join the dots between Lord Drayon’s comment above and the following excerpt from the STFC announcement

discussions would be held in coming months with national and international partners, including universities, departments and project teams, on implementation of the investment strategy. This will include discussions with EPSRC and the University funding councils on the impact of these measures on physics departments in universities.

I doubt if EPSRC is going to come running to the rescue without a great deal of encouragement. However, taken together with the comment above by Lord Drayson, there’s at least a hint of a possibility that a way to protect grants might be found. Calling them “research” rather than “exploitation” grants would be a start…

16.18pm. Press statements from Jocelyn Bell-Burnell, President of the Institute of Physics here and Andy Fabian, President of the Royal Astronomical Society here.

17.08pm. I think that’s enough for the day. It hasn’t been good, but the nightmare scenario was that my own research grant would be terminated immediately and I’d have to break the news to my PDRA. At least that didn’t happen, not yet anyway. I suppose we should be thankful for small mercies. But I’m exhausted after sleeping so badly last night, so I think I’ll close this for now. Keep your comments coming if there’s anything significant I missed…

19.45pm Before I settle down with my gramophone records for the evening, I just thought I’d remind anyone not sufficiently depressed at the state of STFC that the drastic cuts announced today do not take account of whatever share of the £600 million “efficiency savings” announced in the budget has been allocated to them. It may look bad now, but it’s probably going to get worse. On that cheery note, I’m going to have a drink and listen to Mahler.

Author Credits

Posted in Science Politics, The Universe and Stuff with tags , , , , , , on December 10, 2009 by telescoper

I’ve posted before about the difficulties and dangers of using citation statistics as measure of research output as planned by the forthcoming Research Excellence Framework (REF). The citation numbers are supposed to help quantify the importance of research as judged by peers. Note that, in the context of the REF, this is a completely different thing to impact which counts a smaller fraction of the assessment and which is supposed measure the influence of research beyond its own discipline. Even the former is difficult to measure, and the latter is well nigh impossible.

One of the problems of using citations as a metric for research quality is to do with how one assigns credit to large teams of researchers who work in collaboration. This is a particularly significant, and rapidly growing, problem in astronomy where large consortia are becoming the exception rather than the rule. The main questions are: (i) if paper A is cited 100 times and has 100 authors should each author get the same credit? and (ii) if paper B is also cited 100 times but only has one author, should this author get the same credit as each of the authors of paper A?

An interesting suggestion over on the e-astronomer addresses the first question by suggesting that authors be assigned weights depending on their position in the author list. If there are N authors the lead author gets weight N, the next N-1, and so on to the last author who gets a weight 1. If there are 4 authors, the lead gets 4 times as much weight as the last one.

This proposal has some merit but it does not take account of the possibility that the author list is merely alphabetical which I understand will be the case in forthcoming Planck publications, for example. Still, it’s less draconian than another suggestion I have heard which is that the first author gets all the credit and the rest get nothing. At the other extreme there’s the suggestion of using normalized citations, i.e. just dividing the citations equally among the authors and giving them a fraction 1/N each.

I think I prefer this last one, in fact, as it seems more democratic and also more rational. I don’t have many publications with large numbers of authors so it doesn’t make that much difference to me which you measure happen to pick. I come out as mediocre on all of them.

No suggestion is ever going to be perfect, however, because the attempt to compress all information about the different contributions and roles within a large collaboration into a single number, which clearly can’t be done algorithmically. For example, the way things work in astronomy is that instrument builders – essential to all observational work and all work based on analysing observations – usually get appended onto the author lists even if they play no role in analysing the final data. This is one of the reasons the resulting papers have such long author lists and why the bibliometric issues are so complex in the first place.

Having dozens of authors who didn’t write a single word of the paper seems absurd, but it’s the only way our current system can acknowledge the contributions made by instrumentalists, technical assistants and all the rest. Without doing this, what can such people have on their CV that shows the value of the work they have done?

What is really needed is a system of credits more like that used in the television or film. Writer credits are assigned quite separately from those given to the “director” (of the project, who may or may not have written the final papers), as are those to the people who got the funding together and helped with the logistics (production credits). Sundry smaller but still vital technical roles could also be credited, such as special effects (i.e. simulations) or lighting (photometic calibration). There might even be a best boy. Many theoretical papers would be classified as “shorts” so they would often be written and directed by one person and with no technical credits.

The point I’m trying to make is that we seem to want to use citations to measure everything all at once but often we want different things. If you want to use citations to judge the suitability of an applicant for a position as a research leader you want someone with lots of directorial credits. If you want a good postdoc you want someone with a proven track-record of technical credits. But I don’t think it makes sense to appoint a research leader on the grounds that they reduced the data for umpteen large surveys. Imagine what would happen if you made someone director of a Hollywood blockbuster on the grounds that they had made the crew’s tea for over a hundred other films.

Another question I’d like to raise is one that has been bothering me for some time. When did it happen that everyone participating in an observational programme expected to be an author? It certainly hasn’t always been like that.

For example, go back about 90 years to one of the most famous astronomical studies of all time, Eddington‘s measurement of the bending of light by the gravitational field of the Sun. The paper that came out from this was this one

A Determination of the Deflection of Light by the Sun’s Gravitational Field, from Observations made at the Total Eclipse of May 29, 1919.

Sir F.W. Dyson, F.R.S, Astronomer Royal, Prof. A.S. Eddington, F.R.S., and Mr C. Davidson.

Philosophical Transactions of the Royal Society of London, Series A., Volume 220, pp. 291-333, 1920.

This particular result didn’t involve a collaboration on the same scale as many of today’s but it did entail two expeditions (one to Sobral, in Brazil, and another to the Island of Principe, off the West African coast). Over a dozen people took part in the planning,  in the preparation of of calibration plates, taking the eclipse measurements themselves, and so on.  And that’s not counting all the people who helped locally in Sobral and Principe.

But notice that the final paper – one of the most important scientific papers of all time – has only 3 authors: Dyson did a great deal of background work getting the funds and organizing the show, but didn’t go on either expedition; Eddington led the Principe expedition and was central to much of the analysis;  Davidson was one of the observers at Sobral. Andrew Crommelin, something of an eclipse expert who played a big part in the Sobral measurements received no credit and neither did Eddington’s main assistant at Principe.

I don’t know if there was a lot of conflict behind the scenes at arriving at this authorship policy but, as far as I know, it was normal policy at the time to do things this way. It’s an interesting socio-historical question why and when it changed.

Budget Bombshell

Posted in Science Politics with tags , , , on December 9, 2009 by telescoper

As pointed out by Roger Highfield, there’s some grim news for science and higher education  in today’s pre-budget report by Chancellor of the Exchequer Alistair Darling.

In Chapter 6 of the document there is a  list of cuts to be made in public expenditure as a response to the worse-than-expected state of the public finances. Among them you can find a whopping

£600 million from higher education and science and research budgets from a combination of changes to student support within existing arrangements; efficiency savings and prioritisation across universities, science and research; some switching of modes of study in higher education; and reductions in budgets that do not support student participation;

The first means students will suffer because of cuts to the support they will be offered. “Efficiency savings” means what it always means, reducing the level of service to save money. I’ve no idea what “switching of modes of study” means, but I guess it has something to do with having a larger proportion of part-time students. The last bit is completely lost on me. If anyone reading this can translate it into English for me I’d be very grateful.

It is clear that the Research Councils will have to find their share of the efficiency savings. Since the one most directly relevant to me, the Science and Technology Facilities Council (STFC) is already on the ropes after a series of financial catastrophes this does not augur well the level of cuts expected to be announced in the next few days as a result of their recent prioritisation exercise:

The primary focus of Council’s latest meeting was a review of the programme prioritisation now underway. The chair and deputy chair of Science Board, Professors Jenny Thomas and Tony Ryan, discussed the process of input from advisory panels to the Physical And Life Sciences Committee (PALS) and the Particle Physics, Astronomy and Nuclear Physics Science Committee (PPAN), and thence to Science Board which will meet 7-8 December to finalise its recommendations to the Council meeting on 15 December. Council agreed the importance of informing the community as quickly as possible after its meeting of the outcome.

So we can expect to hear next week who’s for the shredder. I’m sure STFC were making contigency plans for different possible outcomes, but I’m pretty sure this was close to their worst possible case. Many of us are going to have a very depressing Christmas, as the axe is sure to fall on the astronomy programme in extremely brutal fashion. The cuts will be deep and the injuries sustained will leave scars that will last for many years. The pre-budget statement shows that there’s going to be a long dark tunnel for British science with very little evidence of light at the end of it.

It won’t just be astronomy research that suffers, of course. The Higher Education sector is feeling the pinch already, with redundancies already looming at several institutions. You can place your bets as to how many departments will close over the next year or two, and how many talented scientists will be moving abroad to secure their future rather than stay in a country that seems to place so little value on science.

Science and Poetry

Posted in Poetry, The Universe and Stuff with tags , , , on December 6, 2009 by telescoper

In amongst all the doom and gloom about job cuts and the oncoming onslaught that goes by the name of impact, I found in this week’s Times Higher a thought-provoking article about the demise of poetry. The author, Neil McBride, is principal lecturer in Informatics at De Montfort University and the piece is made all the more interesting by the fact that it includes some of his own verse. In fact, with his permission, I’ve included one of the poems below.

I agree with some of what McBride says in his article and disagree with some too. I don’t intend to dissect the piece here, and suggest instead that you read it yourself and form your own opinion. Since I wanted to include one of the poems here, however, I thought I should at least address its context in the article. The opening paragraph states

Dame Jocelyn Bell Burnell, the renowned astrophysicist, hid her love for poetry from the world until she retired, out of fear for what people would think.

In fact, I posted an item about an anthology of astronomy-inspired poems edited by Jocelyn on this blog many moons ago. McBride goes on to describe an anthology of poetry written by scientists that was published in 2001 wherein all the writers remained anonymous, the reason being

Good intelligent men and women, clothed in cold rationality, considered it professional suicide to admit to any literary emotions.

The following poem, McBride’s own, develops this image to the point of caricature:

Science and Poetry

In his lab he’s hid “Whitsun Weddings” behind the sink,
The latest volume of Fuller sandwiched between reagent catalogues.
Shakespeare’s sonnets encoded in the lab book
Rossetti pasted to the wall behind the periodic table.

Amongst the chaotic dishes and tubes, there cannot be anything poetic at all
Rhythm and language must be neutralised, the third person
Is the wash of objectivity, the veneer of scientific discipline:
Verse is hidden at the back of a draw covered with Millipore.

The poets of science have no names, clothed in the shame
Of irrationality, the atrocity of the literary mind is unspoken
Words must be disguised, sanitised. Any evidence of life
Outside the rational, the objective, must be denied.

The observatory is cold, dark, starless. Pulsars blip
The steady drip, drip of numbers stripped of spirit
The poetry of the stars must be denied
Planets are mathematical objects swimming in an emotional vacuum.

Do not suggest that patterns, laws, and the aesthetics of structure
Hold anything of the spirit. Don’t speak poetry to me:
We silence our critics, mute emotions, declare ourselves ‘observers’.
There is no soul, nothing but a rotting body of clockwork chemicals.

It’s certainly a finely crafted piece of satire, but as a scientist myself I have to stand up for my brothers and sisters and say that it is very far from my experience of their view of literature. Perhaps astronomy attracts more romantic types more likely to wear their hearts (and literary sensibilities) on their sleeves than computer scientists or chemists. The many scientists I know who do read and write poetry do not hide- and, as far as I know, never have hid – this from their peers or anyone else. And I doubt if it ever occurred to any of them that confession to a love of poetry would damage their careers. I don’t think there ever was a reason for Dame Jocelyn to have hidden it away for all those years, or perhaps she was just using poetic license?

McBride goes on to discuss a number of possible reasons for poetry’s falling popularity. Modern poetry is too difficult , too obscure, too “academic” , for the reader-in-the-street to understand. That’s not helped by the fact that, in this digital age people, the immediate availability of easier visual forms of entertainment is making people less receptive to literature that requires prolonged reflection. I think there’s truth in both of these arguments, but I think there’s another possibility: that the internet revolution may just be changing the way literature is conceived and delivered, just as technological and sociological change has done many times in the past.

In the course of his very interesting piece, McBride also touches on another theme I’ve posted about a number of times. To quote:

Perhaps the power of poetry is its downfall. It addresses uncertainty. It questions, it leaves frayed edges and loose wires. We reject poetry because we shun its emotional engagement.

This reminds me of the stereotypical image of a scientist as an arrogant god of certainty, one that I don’t recognize at all. Scientists are constantly addressing uncertainty. That’s their job. I’m sure we’re all too aware of frayed edges and loose wires too. The conflict and indeterminacy we face in our work is not the same as people find in their emotional lives, of course, but the need to engage with it causes similar levels of stress!

Most people don’t care much for either science or poetry. Both are considered too hard, but probably in different ways. The digital age hasn’t turned everyone into unthinking zombies, but I think it has probably led to more people opting out of difficult ways of earning a living and finding easier ways of spending their leisure time. But there are still some who find pleasure in what’s difficult. Perhaps the reason why so many scientists love poetry is that they know how hard it is.

You can find more of Neil McBride’s poetical work here.