R.I.P. Dave Carter

Posted in The Universe and Stuff on May 26, 2021 by telescoper

Dave Carter, photographed around 2001 by the Liverpool Telescope. Picture credit here.

It is with great sadness that I pass on the news of the death over the weekend of Professor David Carter of Liverpool John Moores University who, among many other things, was a regular commenter on this blog. I understand he had been suffering from leukemia for some time.

Dave Carter obtained his PhD from the Institute of Astronomy, Cambridge in 1977 working on the surface brightness profiles of galaxies. He then had a number of positions: at Oxford, at Mount Stromlo and Siding Spring Observatories in Australia, the Isaac Newton Group on La Palma and back in Cambridge. In 1996 he joined Liverpool John Moores University as Project Scientist for the Liverpool Telescope. He took early retirement from LJMU in 2012 but carried on research as an Emeritus Professor mainly working on the HST/ACS Coma Cluster survey.

His comments on this blog over the years – his first was in 2010 – revealed him to have a wide range of interests outside astronomy, including cricket and music. He was also involved in his local Methodist Church and Community Centre, and a local parish councillor.

I didn’t know Dave very well in a personal capacity – we only met in person a few times – but he always struck me as a very nice man as well as being immensely knowledgeable about matters astronomical. I send my deepest condolences to his wife and three sons, as well all his friends and colleagues both in Liverpool and around the world who miss him terribly.

The Burning of the Custom House

Posted in History with tags , , , , on May 25, 2021 by telescoper

Today is the centenary of a significant event in the War of Independence. On 25th March 1921 about 120 members of the Irish Republican Army mounted an operation in Dublin with the aim of setting fire to the Custom House, a fine 18th Century neoclassical building on the North Side of the River Liffey in central Dublin. They were aided in this task by members of the local Fire Brigade who, being Republican supporters, started by the IRA, did the best they could to spread the flames throughout the building when purportedly trying to put them out.

The destruction of the Custom House was a major propaganda coup for the Republican forces, but in military terms it was disastrous. About two-thirds of the IRA volunteers that took part were captured and five were killed. That meant that the virtual elimination of the fighting capability of the IRA in Dublin. The whole plan was the brainchild of Éamon de Valera, who wanted to stage a large-scale “spectacular” to counter the British propaganda argument that Republican forces – who had previously fought a guerilla war of ambushes and assassinations – were just a gang of criminal thugs. The problem with his plan was that the IRA was vastly outnumbered, especially in Dublin where the British garrison was about 10,000. In practical terms, guerilla warfare was all the IRA could manage with the resources available at this time.

The Custom House raid might have been less of a military disaster had more thought been given to an exit strategy once the fires had started, by somehow securing a route out of the area, but as it was the Republican forces trying to hold a perimeter were quickly surrounded, ran out of ammunition in the ensuing gun battle, and were overwhelmed. But maybe it really did have a big effect on the British authorities. Just a few months later, on 11th July 1921, a truce was signed and the War of Independence came to an end.

There have been many commemorations today, many of them rightly focusing on the loss of civilian life and lots of coverage in the news and other media. Here is an item that was on RTÉ News last night.

I’m not in Lausanne…

Posted in Biographical, Maynooth, The Universe and Stuff on May 25, 2021 by telescoper

A view of Lausanne, where I am not.

For the rest of this week I shall not be in the beautiful town of Lausanne on the shores of Lake Léman in Switzerland.

The reason I am not in Lausanne is that the Annual Meeting of the Euclid Consortium is being held here this year. I was not in Barcelona for the corresponding meeting last year. At least I have actually been to Barcelona a few times. I’ve never been to Lausanne, and won’t have been even after attending a conference there.

While not in Lausanne I shall be watching the talks remotely from Maynooth but of course there is much more to a conference than the formal sessions. I am looking forward to not travelling there and back as well as not socializing with the other delegates, not sampling the local food and wine, not meeting any new people and not making any use of networking opportunities to start new collaborations. I’ll also not be rummaging around in the conference goody bag.

Above all I am looking forward to not seeing many old friends for the first time in ages and not going out for a drink with them. Instead of that I’ll be not having a drink, on my own, in Maynooth.

These virtual conferences are all very well, and of course made necessary by the Covid-19 pandemic, but what particular annoys me about them is the absence of travel means I don’t get to use my Irish passport. I deeply resent being denied the opportunity brandish it in front of my UK colleagues as I use the fast track at the airport…

Give us a break!

Posted in Biographical, Education, Maynooth on May 24, 2021 by telescoper

Taking a short break from marking exams I thought I’d share an article you can read here entitled Let’s Reclaim Summer Break arguing that Faculty members should make a point of taking a break this summer. Here’s a short excerpt:

Our work seems to have fried our willpower and our ability to unplug and left us feeling tethered to our email and work even when, ostensibly, we are taking time off. We need to rest our minds, bodies and spirits — which will inevitably enrich our ability to return to our work with new energy. We can’t all book a fancy self-care retreat on an isolated island, but maybe it’s time to commit to enjoying a guilt-free beach read. Or to taking a long walk in the middle of the day or visiting a local venue for a live music performance.

I wholeheartedly agree with this. This year has been exhausting enough but I didn’t get any time off at all last summer and it’s definitely showing. I’m completely drained. I can see the tasks piling up for this summer already so I hope I’ve got the willpower not only to say ‘no’ but to disconnect entirely for the time that is owed to me.

But my biggest fear isn’t whether I myself get a holiday this coming academic year or not. It’s that, having worked all summer last year, and put in countless hours of unpaid overtime ever since, there is a real danger that level of overwork will be the “new normal” for all of us – and I don’t just mean at my University.

We’d like to think our employers will let us relax a bit once the Covid19 pandemic is over, but another possibility is that having seen how much we’re prepared to put up with that they’ll expect that to carry on forever, with perhaps a few webinars on “resilience” thrown in for good measure.

Football Round Up

Posted in Football, GAA on May 23, 2021 by telescoper

Well today saw the last round of matches of the English Premier League for this season. The most important match finished Fulham 0 Newcastle United 2. That caps a good end of season run that leaves Newcastle in 12th place having recovered well from an alarming slump in mid-season to avoid any threat of regation.

It’s been a good weekend for Newcastle fans because yesterday Sunderland lost their playoff semi-final against Lincoln City and therefore languish in League One for another season.

Fulham, West Brom were already relegated some time ago, so there wasn’t much end of season drama at the bottom end of the table. I gather that manager Sam Allardyce will be leaving West Brom, having accomplished everything that was expected of him with the club.

As you can see, the top three teams are all from the Midlands. Leicester could have joined them had they not lost to Spurs today so it is Chelsea that joins them in the top 4. Manchester City finish as Champions by a country mile.

By contrast, here in Ireland, the Gaelic Football season has only just started. This afternoon I watched a cracking game between Dublin and Kerry that ended with points level at 4-09 to 1-18 after a late penalty to Kerry allowed them to equalize in stoppage time. Dublin had been well ahead earlier in the game but had to weather a determined fightback to hold on for the draw.

There are no crowds at GAA matches yet but at least one can watch games for free on terrestrial TV…

Open Science and Open Software

Posted in Open Access, Science Politics, The Universe and Stuff with tags , , , , on May 22, 2021 by telescoper

As the regular readers of this blog – both of them – will know, I’ve been banging on from time to time about Open Access to scientific publications. After posting a video featuring Volker Springel and the GADGET-4 code I thought I’d return to an issue that came up briefly in my recent talk about Open Access and the Open Journal of Astrophysics here which is the question whether open access to scientific results enough, or do we have to go a lot further?

An important aspect of the way science works is that when a given individual or group publishes a result, it should be possible for others to reproduce it (or not as the case may be). Traditional journal publications don’t always allow this. In my own field of astrophysics/cosmology, for example, results in scientific papers are often based on very complicated analyses of large data sets. This is increasingly the case in other fields too. A basic problem obviously arises when data are not made public. Fortunately in astrophysics these days researchers are pretty good at sharing their data, although this hasn’t always been the case.

However, even allowing open access to data doesn’t always solve the reproducibility problem. Often extensive numerical codes are needed to process the measurements and extract meaningful output. Without access to these pipeline codes it is impossible for a third party to check the path from input to output without writing their own version assuming that there is sufficient information to do that in the first place. That researchers should publish their software as well as their results is quite a controversial suggestion, but I think it’s the best practice for science. There isn’t a uniform policy in astrophysics and cosmology, but I sense that quite a few people out there agree with me. Cosmological numerical simulations, for example, can be performed by anyone with a sufficiently big computer using GADGET the source codes of which are freely available. Likewise, for CMB analysis, there is the excellent CAMB code, which can be downloaded at will; this is in a long tradition of openly available numerical codes, including CMBFAST and HealPix. Researchers in these and other areas do tend to share their software on open-access repositories, especially GitHub.

I suspect some researchers might be reluctant to share the codes they have written because they feel they won’t get sufficient credit for work done using them. I don’t think this is true, as researchers are generally very appreciative of such openness and publications describing the corresponding codes are generously cited. In any case I don’t think it’s appropriate to withhold such programs from the wider community, which prevents them being either scrutinized or extended as well as being used to further scientific research. In other words excessively proprietorial attitudes to data analysis software are detrimental to the spirit of open science.

Anyway, my views are by no means guaranteed to be representative of the community, so I’d like to ask for a quick show of hands via a poll that I started about 8 years ago.

You are of course welcome to comment via the usual box, as long as you respect my comments policy…

Marking Blues

Posted in Covid-19, Education, Maynooth with tags , , , on May 21, 2021 by telescoper

“May is a pious fraud of the almanac.” – James R. Lowell

The rainy weather we’ve been having for the last few days has at least deprived me of distractions from the job at hand: the marking of examinations and other assessments. Examinations started here in Maynooth last Friday (14th May) , a week ago today, and as I write this morning another one has just started. That’s the third in the past week. Yesterday I managed to finish all the assessments for one Module, just in time for today’s batch to arrive. It’s not only examination marking of course, I’ve also had computational physics projects to assess and feedback to write. Suffice to say that it’s a busy time of year.

When I was getting this morning’s examination online timed assessment ready it suddenly struck me that some of the students taking it belong the year group that entered the University in September 2018, and are the first students I will have seen all the way through the degree as they are taking their last set of exams now and will graduate this summer.

Of course when I say “will have seen” I’m not really being honest. I’ve hardly seen any of them since last March. Although I have spoken to them via Teams I haven’t even seen them virtually, as students virtually always have their video on mute during online teaching sessions.

Because of the Covid-19 restrictions, the students on three-year programmes have had most of their teaching online since last Spring, and by the time they finish the current set of examinations half their assessment will have been online.

You’ll have to ask students whether the lack of face-to face interactions has impacted their learning, but speaking for myself as a lecturer it has made life very difficult. Lecturing to a camera is not easy, and the absence of visual cues from the audience makes it difficult to know whether what you’re saying is sinking in. I guess we’ll find out when we look at the examination grades.

Thinking about the group of students who will form the graduating class for this year, though, the saddest thing is that they will shortly finish their exams and complete their degrees. We the staff won’t have the chance to congratulate them properly, nor will they the students be able to celebrate properly with each other (as they are scattered all over the country).

Although we’ve worked very hard to do what we can over the past year and a bit, I can’t rid my mind of the feeling that this group in particular has been let down very badly. I know the circumstances are beyond our control and all that, but they just haven’t had the educational experience they expected and deserve. At least – we hope – other groups can look forward to something like normality, possibly from next year, but for this group that’s it for their third level education. It’s really not fair.

I have said so before on this blog that I think any student who wishes to should be able to repeat the last year at university free of charge in recognition that they have been severely short-changed. It seems to me that would be the right thing to do, which is why I don’t think the Government will allow it.

Now, it’s still raining so I’ll try to get some more marking done while the exam goes on.

Emails to be wary of..

Posted in Uncategorized on May 20, 2021 by telescoper

Although it’s been an issue ever since I started writing a blog over a decade ago I’ve noticed a recent increase in phony comments, some of them using domains like that above to generate plausible email addresses. I’ve blocked all comments from people using such email addresses, including those from above. I had a lot of trouble a few years ago from someone sending nasty anonymous emails which has left me ill-disposed towards people using addresses like these.

Anyway, I thought I’d remind potential commenters of what it says on the front page of this blog:

 Feel free to comment on any of the posts on this blog but comments may be moderated; anonymous comments and any considered by me to be abusive will not be accepted. 

I don’t block comments that disagree with my opinions, but I write the posts and I’m not anonymous so I don’t see why commenters should be allowed to be.

For you information, since I started this blog in 2008, a total of 37,062 comments have been published (including those by me). A total of 2,730,621 have been blocked.

A Legacy of Spies

Posted in Literature with tags , on May 19, 2021 by telescoper

When the writer John Le Carré passed away in December 2020, I ended my little tribute to him with the following:

The last John le Carré book I bought was A Legacy of Spies (2017), which I haven’t yet got around to reading. I’ll put that on the list of Christmas reading, and drink a toast to an author who has given me so much to enjoy and to think about over so many years.

I didn’t actually get around to reading the book at Christmas. I did however notice it the other day still among my (substantial) pile of as-yet-unread books while I was looking for a distraction from examination marking, and decided to read it now, which I have. It’s very good, and also brought back a lot of memories of the entire Smiley sequence, so I heartily recommend it.

I watched the two TV series based on books by John le Carré – Tinker Tailor Soldier Spy and Smiley’s People – when they were broadcast so decided to read those books, and after those read all the others he had written by that time.

Not all his early books were great, but The Spy who came in from the Cold is excellent as are Tinker Tailor Soldier Spy, The Honourable Schoolboy and Smiley’s People – the so-called Karla trilogy. A Legacy of Spies is based on many of the characters to be found in these other novels. The central character, Peter Guillam, appears in the Karla Trilogy and the plot itself revolves around the failed operation described in The Spy who came in from the Cold that resulted in the death of Elizabeth Gold and Alec Leamas at the Berlin Wall. There are even short appearances by Jim Prideaux (the British agent captured during Operation Testify in Tinker Tailor) and right at the very end by George Smiley himself.

Smiley’s remarks at the end, looking back over his career as a spy, with all the cruelty and death and amorality that entailed, are apposite:

‘So was it all for England, then?’ he resumed. ‘There was a time, of course there was. But whose England? Which England? England all alone, a citizen of nowhere? I’m a European, Peter.

No prizes for guessing where that phrase came from!

A Legacy of Spies has an unusual narrative structure, the story told in part through flashbacks and documents. Guillam, in retirement in Brittany in his old age, is dragged into an investigation into alleged wrongdoings by the Circus and has to prepare some sort of defence but lots of important evidence is missing. He has to rely on his own memory but there are things he must withhold to protect himself and others. It’s a gripping read and made me want to read the entire sequence again right from the beginning.

Job in Theoretical Physics at Maynooth!

Posted in Maynooth with tags , on May 19, 2021 by telescoper

Just a short post passing on the information that we have a fixed-term job available in the Department of Theoretical Physics at Maynooth University. You can find the details here.

The position is for one calendar year starting in September 2021. I know it is a short appointment, but it seems to me that it would provide a good opportunity for an early-career academic to gain some teaching experience while carrying on their research in a lively and collegiate Department.

The deadline for applications is 23.30 on Tuesday 8th June 2021 and you should apply through the Maynooth jobs portal here.

If you’d like to know any more please feel free to contact me privately.

Oh, and please pass this on to anyone you think might be interested!