Archive for September, 2023

Physics as Fun

Posted in Biographical, Education, Maynooth on September 13, 2023 by telescoper

To add to all the excitement I’ve just had a visit from a representative of ESB Networks who installed a new “smart” meter at my house in Maynooth. That process involved cutting off the electricity for about 15 minutes, which was long enough to set off my burglar alarm. Now that’s sorted, I have to go round resetting the clocks. All of that after I wasted half an hour this morning watching my laptop do compulsory Windows updates which involved two restarts.

Anyway, despite the distractions I’ve been working busily at home and getting ready for my departure abroad. This is the first year for a while that I haven’t been involved in Welcome Week or the Student Orientation process, which are ongoing. I have, however, looked at the online registrations so far and confirmed that there will indeed be some students in Theoretical Physics for the forthcoming academic year.

Yesterday I saw this cartoon by Gary Larson so thought I’d share it here.

It reminded me of this picture I have in the past shown at Open Days

I think there are many people out there who think physics, especially theoretical physics, isn’t something to be enjoyed. I think it is, or at least that it can be. I also think the best way to succeed at physics is by enjoying it, and I hope the new and returning students at Maynooth enjoy their theoretical physics over the next year while I am slaving away on sabbatical in Barcelona…

Let’s Make “No pay” Open Access Real…

Posted in Open Access, Politics with tags , on September 12, 2023 by telescoper

I took the liberty of reblogging this short post by Olivier Pourret about “No Pay” Open Access to direct readers to it and to make a couple of points. One is that you have to realize that “publishing-industry representatives” have a vested interest in the much of the discussion is about possible models for what might happen in the future, some of us have been busy making “No Pay” Open Access real in the here and now.

For some background, the article refers to a Council of Europe a document (PDF) that calls for “transparent, equitable, and open access to scholarly publications”.  In its conclusions, the Council calls on the Commission and the member states to support policies towards a scholarly publishing model that is not-for-profit, open access and multi-format, with no costs for authors or readers. In other words, it calls for Diamond Open Access. The covering press release includes:

If we really believe in open science, we need to make sure that researchers can make their findings available and re-usable and that high-quality scientific articles are openly accessible to anyone that needs to read them. This should be particularly the case for research that benefits from public funding: what has been paid by all should be accessible to all.

Mats Persson, Swedish Minister for Education, Ministry of Education and Research

This is clearly how Open Access should be, though I am still worried that the sizeable publishing lobby will still try to persuade research agencies and institutions to pay the existing fees on behalf of authors, which does not solve the problem but merely hides it.

I know I’m not alone in thinking that the current publishing ecosystem is doomed and will die a natural death soon enough. In my view the replacement should be a worldwide network of institutional and/or subject-based repositories that share research literature freely for the common good. Universities and research centres should simply bypass the grotesque parasite that is the publishing industry. Indeed, I would be in favour of hastening the demise of the Academic Journal Racket by having institutions make it a disciplinary offence for any researcher to pay an APC to any journal.

We are lucky in physics and astronomy because arXiv has already done the hard work for us. With the existence of arXiv, old-style journals are no longer necessary. It is great that arXiv is being joined by similar ventures in other fields, such as BiorXiv and EarthArxiv. A list of existing repositories can be found here. I’m sure many more will follow. The future is Diamond.

What is needed is a global effort to link these repositories to each other and to peer review mechanisms. One way is through overlays, as demonstrated by the Open Journal of Astrophysics, there being no reason why the idea can’t be extended beyond arXiv. Other routes are possible, of course, and some of these are mentioned in the article I reposted. I would love to see different models developed, but that needs action, not words.

From Einstein to Euclid: the Gallery

Posted in Biographical, Maynooth, The Universe and Stuff with tags , , on September 11, 2023 by telescoper

Last week I posted a photograph taken during my public lecture at Maynooth University. I thought I’d compound your collective misery by putting up more. I’m not sharing any pics of the audience because we didn’t ask them for permission, so you’re basically stuck with pictures of me (and one of Joost Slingerland, our Head of Department, in the first one).

Thanks to Dale for taking the pictures!

The 100th Publication at the Open Journal of Astrophysics

Posted in OJAp Papers, Open Access, The Universe and Stuff with tags , , , on September 11, 2023 by telescoper

I am happy to announce the publication of yet another new paper at the Open Journal of Astrophysics. This one is hot off the press; it was published today, 11th September 2023.

The latest paper is in fact our 100th publication. It is also the 35th in Volume 6 (2023), which means that we have now published more papers so far this year than in the previous two years put together. I’d like to thank everyone who has supported the Open Journal of Astrophysics and helped us get this far! Here’s to the next 100!

Anyway, the new paper is entitled A complete catalogue of merger fractions in AGN hosts: No evidence for an increase in detected merger fraction with AGN luminosity and it is a complete and systematic analysis of detected merger fractions in AGN hosts from the literature leading to the conclusion that there is no evidence for correlation between the two.

The primary classification for this paper is Astrophysics of Galaxies and the author is Carolin Villforth of the Department of Physics in the University of Bath. As author of our 100th paper, Carolin wins a year’s free subscription to the Open Journal of Astrophysics.

Here is a screen grab of the overlay of the published version which includes the  abstract:

 

 

You can click on the image of the overlay to make it larger should you wish to do so. You can find the officially accepted version of the paper on the arXiv here.

Incidentally, you might notice a new feature on the overlay above. Just above the Abstract heading on the right and side you can see a little link saying “Download”. This allows you to download the citation to the paper in BibTex format.

Research Matters

Posted in Science Politics, The Universe and Stuff with tags , , , , , on September 10, 2023 by telescoper

One of the things that happened last week while I was preoccupied with ITP2023 is that, finally, the UK Government has decided to re-join the European Union’s Horizon 2020 project. I’m very happy about this, and can’t understand why it has taken so long to reach an agreement. I know many researchers in the UK who will be mightily relieved too. Of course things won’t immediately get back to normal. It’s not just that the UK contributions will start in January 2024 so there will have to be some sort of transitional arrangement. More importantly it remains to be seen how long it takes to repair the damage done to goodwill by all the political shenanigans.

While I’m on about research I should also mention that there was a short talk at ITP2023 by a particle physicist by the name of Ronan McNulty who is based at University College Dublin. The topic of that talk was the history of Ireland’s non-membership of CERN; I have blogged about this before, for example here. Currently Ireland is in the anomalous position of not having any form of association agreement with CERN; the list of Full and Associate Member states can be found here. It does seem, however, that Ireland is at last about to lodge an application for Associate Membership, perhaps as early as January 2024.

Ronan made a particularly important point about membership, which I hope is not sidelined in the discussions. The case for joining CERN made at political levels is largely about the return in terms of the potential in contracts to technology companies based in Ireland from instrumentation and other infrastructure investments. This was also the case for Ireland’s membership of the European Southern Observatory, which Ireland joined about five years ago. The same thing is true for involvement in the European Space Agency, which Ireland joined in 1975. These benefits are of course real and valuable and it is entirely right that arguments should involve them.

Looking at CERN membership from a scientific point of view, however, the return to Ireland will be negligible unless there is a funding to support scientific exploitation of the facility. That would include funding for academic staff time, and for postgraduate and postdoctoral researchers to build up an active community as well as, e.g., computing facilities. This need not be expensive even relative to the modest cost of associate membership (approximately  €1.5M). I would estimate a figure of around half that would be needed to support CERN-based science.

The problem is that research funding for fundamental science (such as particle physics) in Ireland is so limited as to be virtually non-existent by a matter of policy at Science Foundation Ireland, which basically only funds applied research. Even if it were decided to target funding for CERN exploitation, unless there is extra funding that would just lead to the jam being spread even more thinly elsewhere.

As I have mentioned before, Ireland’s membership of ESO provides a cautionary tale. The Irish astronomical community was very happy about the decision to join ESO, but it was not accompanied by significant funding to exploit the telescopes. Few astronomers have therefore been able to benefit from ESO membership. While there are other benefits of course, the return to science has been extremely limited. The phrase “to spoil a ship for a ha’porth of tar” springs to mind.

Although Ireland joined ESA almost fifty years ago, the same issue applies there. ESA member countries pay into a mandatory science programme which includes, for example, Euclid. However, did not put any resources on the table to allow full participation in the Euclid Consortium. There is Irish involvement in other ESA projects (such as JWST) but this is somewhat piecemeal. There is no funding programme in Ireland dedicated to the scientific exploitation of ESA projects.

Under current arrangements the best bet in Ireland for funding for ESA, ESO or CERN exploitation is via the European Research Council but to get a grant from that one has to compete with much better developed communities in those areas.

A significant shake-up of research funding in Ireland is in view, with Science Foundation Ireland and the Irish Research Council set to merge into a single entity. If I had any say in the new structure I would set up a pot of money specifically for the purposes I’ve described above. Funding applications would have to be competitive, of course, and I would argue for a panel with significant international representation to make the decisions. But for this to work the overall level of public sector research funding will have to increase dramatically from its current level, well below the OECD average. Ireland is currently running a huge Government surplus which is projected to continue growing until at least 2026.

Only a small fraction of that surplus would be needed to build viable research communities not only in fundamental science but also across a much wider range of disciplines. Failure to invest now would be a wasted opportunity.

DolanFest

Posted in Maynooth, The Universe and Stuff with tags , , , on September 9, 2023 by telescoper

This morning found me in Renehan Hall in St Patrick’s House in Maynooth for ‘DonalFest’, a meeting to mark the retirement of former colleague (now Emeritus) Professor Brian P. Dolan, who retired a couple of years ago in the midst of the pandemic, which delayed his leaving do.

Today’s meeting involved a number of talks given by Brian’s past and present collaborators in the splendid surroundings of the old college (and, I might add, in glorious weather). Unfortunately I had to leave before the end in order to attend to some logistical matters to do with my impending departure on sabbatical, but I’m sure the rest of it was as enjoyable as the bit I was able to be at.

All of which gives me an excuse to plug again this textbook (left), based on the lecture notes Brian used to teach a final-year undergraduate course in General Relativity to Mathematical Physics students here in Maynooth.

The book’s description reads:

Einstein’s general theory of relativity can be a notoriously difficult subject for students approaching it for the first time, with arcane mathematical concepts such as connection coefficients and tensors adorned with a forest of indices. This book is an elementary introduction to Einstein’s theory and the physics of curved space-times that avoids these complications as much as possible. Its first half describes the physics of black holes, gravitational waves and the expanding Universe, without using tensors. Only in the second half are Einstein’s field equations derived and used to explain the dynamical evolution of the early Universe and the creation of the first elements. Each chapter concludes with problem sets and technical mathematical details are given in the appendices. This short text is intended for undergraduate physics students who have taken courses in special relativity and advanced mechanics.

You can order the book and/or recommend a copy to your library here.

Anyway, let me end with some personal wishes to Brian for a long and happy retirement!

Brahms, Byrne & Berlioz at the NCH

Posted in Biographical, Music with tags , , , , on September 9, 2023 by telescoper

Last night I went to the Opening Concert of the new season by the National Symphony Orchestra at the National Concert Hall in Dublin. I’ll be away for most of the year, so I thought I’d make the most of the time I’ve got before I depart to get a fix of culture.

This year is the 75th anniversary of the founding of the National Symphony Orchestra, and the very first piece they performed at their very first concert back in 1948 was Academic Festival Overture by Johannes Brahms. I found it an especially fitting piece because this week we have been having graduation (conferring) ceremonies all week in Maynooth. It’s a familiar work, but provided an enjoyably upbeat start to the show.

The next piece was a a world premiere of a special commission for the National Symphony Orchestra. I was looking forward to this because it was to be the first time I’ve ever heard the uilleann pipes on the concert stage. The piece is a lot of fun, full of great tunes and robust humour. The uilleann pipes are a rather quiet instrument, however, and I have to say I hardly heard a note from them over the rest of the orchestra. At the end a Scottish piper walked on stage to play the bagpipes during the finale. These pipes are a much louder instrument, and even they were hard to hear with the rest of the band on full throttle.

Anyway, after the wine break, we had the Symphonie Fantastique by Hector Berlioz. I was put off this piece at school by a teacher who was obsessed with it and spent nearly a whole term banging on about how wonderful it is. While it is undoubtedly very imaginative – and very innovative for a piece written as early as 1830 – I remain unconvinced by all the hype. It’s basically a fever dream resulting from the composer’s experiments on opium and I find it rather gimmicky. Nevertheless, there is much to enjoy in a live performance of the work. Conductor Jaime Martín began the performance with a genial introduction to some of the “crazy” elements which he got the relevant musicians to play snippets representing, for example, the bubbling cauldron in the last movement which represents witches doing their stuff.

After the full performance the National Symphony Orchestra got a standing ovation. I joined in only briefly because the conductor’s introduction to the Berlioz meant that the concert was longer than I expected and I had to leave to catch my train back to Maynooth. I needn’t have worried. The train was 20 minutes late.

Caption Competition!

Posted in Biographical, Talks and Reviews, The Universe and Stuff on September 8, 2023 by telescoper

Our roaming photographer took some pictures during my public talk on Wednesday night. This one seems ripe for a caption competition. Please submit your entries through the comments box below:

The Universe from Einstein to Euclid

Posted in Biographical, Talks and Reviews with tags , , on September 7, 2023 by telescoper

As we head into the Day 2 of the ITP2023 I thought I’d share the slides I used for the public talk I gave last night. We had an audience of around a hundred which wasn’t bad given that it is graduation week and the undergraduates aren’t back!

Here is the abstract used to advertise the talk:

Euclid is the name of a new scientific mission from the European Space Agency, launched on July 1st, designed to explore the composition and evolution of the Universe. The Euclid mission takes its name from the ancient Greek mathematician regarded by many as the Father of geometry. Until the last century, Euclid’s theorems were assumed not just to be mathematical notions, but to describe the geometrical structure of the physical Universe. Einstein’s general theory of relativity swept that idea aside and gave us new ways of describing space, by unifying it with time, and by allowing it to be affected by matter in a manner very different from that formulated by Euclid. Over the past century, this theory has proved to be very effective at describing the properties of the Universe as observed by modern astronomical telescopes, while also suggesting the existence of dark matter and dark energy.

The Euclid telescope will create an enormous map of the large-scale structure of the Universe across space and time by observing billions of galaxies out to 10 billion light-years, across more than a third of the sky. Euclid will explore how the Universe has expanded and how galaxies and clusters of galaxies have formed over cosmic history, and how space itself is distorted by these structures.

This talk will discuss our modern ideas of space and time, how the Euclid mission will try to test whether or not they are correct and shed light on the nature of dark matter and dark energy.

And here are the slides:

Obviously I cut a number of long stories very short, which probably contributed to why I had a lot of questions from the audience at the end of the talk. I always assume that’s a basically a good sign because it shows people are interested, but it also makes me worry that I didn’t explain things very well!

We didn’t finish until past 9 o’clock and it was a very warm evening, so I was very happy to have a few pints afterwards in O’Neills…

ITP 2023

Posted in Biographical, Education, Maynooth, The Universe and Stuff on September 6, 2023 by telescoper

So here we are then, first day of the 2023 Irish Theoretical Physics meeting here in Maynooth. It’s a busy schedule for the three days, followed by a little meeting on Saturday to mark the retirement of Brian Dolan

It’s been a busy day for reasons other than the ITP2023 and I’ve left it a bit late to write my talk for this evening’s public lecture so I’d better get on with that this afternoon.

Updates to follow.