Archive for August, 2024

Journeys End

Posted in Biographical, LGBTQ+, Maynooth with tags , , , , on August 31, 2024 by telescoper

Today is 31st August 2024, which is officially the last day of my year-long sabbatical – even if tomorrow is a Sunday, so I won’t be actually returning full-time to the office until Monday 2nd September. After that I have three whole weeks to prepare the new modules I’ll be teaching in the Autumn Semester. I suppose at some point I’ll have to write a report about what I did on my sabbatical, at least from the point of view of work. I’ll keep the rest to myself!

I was planning to cook myself dinner and a few glasses of wine this evening to mark the end of my year of travels. I’ll still be doing that but in the last few days I have been given something else to think about.

About 50 years ago, in September 1974, I was preparing for my first days at the Royal Grammar School (RGS) in Newcastle. I didn’t know anyone else there and had no idea what to expect. I’d won a scholarship under the Direct Grant system so my parents didn’t have to pay fees, which was just as well because they wouldn’t have been able to. The RGS was an all-boys school in those days and most of the boys were from much wealthier backgrounds than I was and their parents paid fees. Many had also been to the RGS Junior School (also fee-paying) whereas I had gone to a state school, so when I arrived for my first day there were quite a few that already knew each other and were much better prepared academically than I was.

The upshot of this was that I found it very difficult there for the first few weeks, both socially and academically. I just wasn’t used to the intensity of the teaching style, the extensive homework, and the fact that I had to try to make friends from scratch.

In the first year the teaching was arranged in “Houses” and the boys in each House had to wear a tie of a specific colour with their (blue) blazer. I was in Eldon House so wore a green tie and my first form was called 1E. Everyone took the same subjects in first and second form.

Among the friends I made in the first year was a boy who had been to the RGS Junior School where he had acquired the nickname “Titch” because of his diminutive stature; his real name was Alan Michael Hawdon although he never used Alan. When he wasn’t “Titch” he was Michael. I found it a bit awkward calling him “Titch” because I was scarcely any taller than he was, but he didn’t mind it at all. Despite not being very tall, he excelled at all sporting events, especially running and gymnastics. He was also very kind, friendly and gregarious. Although I wasn’t anything like as sporty as him, we became good friends. In fact he was the only boy whose home (in Tynemouth) I visited in the first year at RGS. I can’t remember what the occasion was, but we spent an enjoyable day at the coast. I also remember going to the annual school camp in Ryedale and spending quite a lot of time with Titch then. I also remember asking if I could take a picture of him with the old Box Brownie my dad had lent me. He agreed.

The system at RGS was that, after the second year, i.e. after 2E, classes began to diversify and there was some choice of subjects. Forms were no longer composed of students from the same House (though we continued to wear the house tie). When I returned to RGS to start the third year, I was in the “Three Languages” form as I had decided to do German (though I dropped it after one year to concentrate on sciences). I was dismayed to find that Titch was in a different form; since I no longer had any classes with him we drifted apart, though we remained on friendly terms until A-levels and departure for University in 1981 after which I lost contact entirely. All I knew until recently was that he got a Royal Navy Scholarship to do Mechanical Engineering at Nottingham University as a precursor for joining the Navy.

So why am I telling you all this?

Last week I heard that Michael Hawdon (aka “Titch”) passed away in December 2022. That news came as a shock because he was the fittest and healthiest lad in the class of ’81 and I would have given long odds against him dying at the age of just 59. The picture of him on the left was taken in 1979; the wonky tie was always a trademark.

I gather that, in 1982, before going to university, he had been enlisted to go to the Falklands. However, the ship he was on suffered a mechanical failure and he never got there; the war ended in June 1982 and he went to Nottingham in October that year. After that, he travelled extensively, including spending some time living in New Zealand.

Forty years had passed since we both left RGS and went our very different ways until, in 2021, out of the blue, he sent me an email (signed “Titch”). It seems he had come across my name in connection with some work he had been doing at the UK Space Agency and decided to look me up. He was probably bored during the Covid-19 lockdown but I was very happy that he remembered me at all. Whatever the reason, I was delighted. We exchanged a considerable number of messages sharing memories of RGS days. Then he stopped replying. I don’t know whether he was ill or merely busy, but just a year later he passed away.

I was only 11 when I met Michael Hawdon and so immature that I didn’t know what was going on in my own emotions, but looking back I can see now that I definitely had a crush on him. Maybe it was more than that. I never told him, of course. It wouldn’t have been appreciated let alone reciprocated. I was in any case more than happy just to be able to call him a friend.

I mentioned the photograph of Titch I took in Ryedale just to say that I carried that around with my in my blazer pocket for at least a year. I spent an hour or so today looking for it, but unfortunately it seems I must have lost it. I wish I had been able to find the words to thank him for his friendship all those years ago. The best I can do now is to drink to his memory.

For some we loved, the loveliest and the best
That from his Vintage rolling Time hath prest,
Have drunk their Cup a Round or two before,
And one by one crept silently to rest

Two New Publications at the Open Journal of Astrophysics

Posted in OJAp Papers, Open Access, The Universe and Stuff with tags , , , , , , , , , , , , on August 31, 2024 by telescoper

I am back in circulation after my little break and, since it’s Saturday, I will resume blogging with another report on activity at the  Open Journal of Astrophysics.  Since the last update we have published two more papers, taking  the count in Volume 7 (2024) up to 71 and the total published by OJAp up to 186.  We’ve still got a few in the pipeline waiting for the final versions to appear on arXiv so I expect we’ll reach the 200 mark fairly soon.

The first paper of the most recent pair, published on August 26th 2024,  is “Impact of lensing of gravitational waves on the observed distribution of neutron star masses”  by Sofia Canevarolo, Loek van Vonderen and Nora Elisa Chisari, all of Utrecht University in the Netherlands. This article presents a discussion of the bias in neutron star mass determinations caused by gravitational lensing of the gravitational waves they produceThe paper is in the folder marked Cosmology and NonGalactic Astrophysics.

Here is a screen grab of the overlay 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.

The second paper has the title “FORGE’d in FIRE III: The IMF in Quasar Accretion Disks from STARFORGE” and was published (in the early hours of the morning) on 29th August 2024. The authors, all based in the USA, are Philip F. Hopkins (Caltech), Michael Y. Grudic (Carnegie Observatories), Kyle Kremer (Caltech), Stella S. R. Offner (UT Austin), David Guszejnov (UT Austin) and Anna L. Rosen (UCSD). This paper, which is in the folder marked Astrophysics of Galaxies, presents a numerical study of star formation and the initial mass function in quasar accretion disks. The previous two papers in this series have also been published in the OJAp: you can find them here and here; images and movies related to this project can be found here.

Here is a screen grab of the overlay 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.

That concludes this week’s update. We still have quite a few papers in the pipeline after the summer lull so I expect I’ll have a larger update for you next week!

Intermission

Posted in Uncategorized on August 28, 2024 by telescoper

It behoves me to disappear from the blogosphere for a couple of days – perhaps not even as long as that – so there will be a (hopefully) short interlude until I return.

A Time to Offer

Posted in Education, Maynooth with tags , , , , , , on August 28, 2024 by telescoper

Today is the day that students across Ireland receive offers of places at Third-Level Institutions to start next month; the full set of CAO points required for different courses in different institutions are available in searchable form here and in a more user-friendly interface here. I have been away on sabbatical for a year so have been out of the loop for admissions. In past years I got an idea of how things were going from Open Days, etc, but not this time round.

This is of course just the first round of offers so things may change significantly over the next week or two. Students now have to decide whether to accept their first-round offer or try to change course. They have until next Tuesday to do this. Departments won’t know how many new students they have for a while yet.

The official low-tech results for Maynooth (in the lower right of the page shown above) are here. Minimum points required for Maynooth’s – and indeed Ireland’s – most important course, MH206 Theoretical Physics and Mathematics, are 513 this year, up a from 493 last year. Here’s a graph of how the CAO points for this course have varied over the years since 2010:

The entry level has been rather steady but note that Leaving Certificate grades have been adjusted upwards for the past few years so 500 points in 2024 is not equivalent to the same number in (say) 2016. The above graph doesn’t show how many students were recruited each year either.

MH201 General Science is 350 this year (same as last year); MH204 Physics with Astrophysics is 383 this year, up slightly from 376 last year. MH101 General Arts – the most popular course at Maynooth and indeed in all Ireland – has a first round offer of 307 this year, down from 310 last year. Most courses I have looked at in Maynooth have first-round offers this year similar to or lower than last year. Across all institutions, required points have fallen or remained unchanged for about 57% of courses.

This is interesting because it contrasts with news stories about grade inflation on the Leaving Certificate; I blogged about this here. It is perhaps worth pointing out that the CAO points needed for a course is largely a matter of demand versus capacity rather than academic performance. For the last few years Maynooth University has been recruiting more and more students, putting pressure on accommodation, teaching loads and campus space. It seems likely that the desire to keep this trend going is at least part of the reason for the continued falls in CAO points here. This is probably happening to some extent across the sector, though Maynooth has a more urgent need for more students: to pay for the legions of new managers it has appointed. The race to the bottom will really accelerate when the Covid-era Leaving Certificate adjustment is removed.

Update: here is the traditional supplement from Thursday’s Irish Times:

Blog Blocked

Posted in Maynooth with tags , , , on August 27, 2024 by telescoper

I discovered today that this blog is not reachable via the campus network at Maynooth University. I wasn’t actually trying to write a post, which I sometimes do at lunchtimes or after work, but simply to send a link to this blog post to a colleague in the Department. I found I couldn’t make a connection to the blog, getting the dreaded ERR_CONNECTION_TIMED_OUT when I tried to do so. I thought it was strange as no other websites were affected and I had no problem connecting to this site from home.

In order to find out what was going on I raised a ticket with Maynooth University IT Services reporting the issues. I quickly got a response saying explaining that this was not the first time they had seen this issue with this particular hosting service (i.e. wordpress.com). It went on:

We were subjected to a phishing campaign originating from a site that shares your hosting address and those addresses are now denied by our firewall policy.

As the phishing origin server is still extant we cannot safely whitelist this IP …without risk of exposing our network to a repeat attack.

Blocking the entire WordPress.com domain because one of its sites was used in a phishing attack seems like overkill to me, but at least the explanation isn’t that the University Management decided to block the blog on campus because I have been critical of its policies. Or is it?

In the past I have sent students links to various educational blog posts from time to time. It looks like I’ll have to stop doing that as they’re not going to be readable on campus unless the firewall policy changes.

Requiem for the Croppies – Seamus Heaney

Posted in History, Poetry with tags , , , , , , , , on August 26, 2024 by telescoper

“The Croppy Boy”, a monument in Tralee, County Kerry. Created by Kglavin, CC BY-SA 3.0 <http://creativecommons.org/licenses/by-sa/3.0/&gt; via Wikimedia Commons

The pockets of our greatcoats full of barley…
No kitchens on the run, no striking camp…
We moved quick and sudden in our own country.
The priest lay behind ditches with the tramp.
A people hardly marching… on the hike…
We found new tactics happening each day:
We’d cut through reins and rider with the pike
And stampede cattle into infantry,
Then retreat through hedges where cavalry must be thrown.
Until… on Vinegar Hill… the final conclave.
Terraced thousands died, shaking scythes at cannon.
The hillside blushed, soaked in our broken wave.
They buried us without shroud or coffin
And in August… the barley grew up out of our grave.

by Seamus Heaney (1939-2013)

This poem is about the Battle of Vinegar Hill which took place outside Enniscorthy in County Wexford on 21st June 1798. It was part of the Rebellion of the United Irishmen. The term “croppy” refers to the short cropped hair worn by the rebels, most of whom went into battle carrying only pikes against the artillery and muskets of the crown forces. The battle was a heavy defeat for the United Irishmen over a thousand of whom were killed in what Heaney calls the “final conclave” where the last hopes for the rebellion to succeed were finally crushed. The poem’s final line depicts the barley in the pockets of dead rebels growing through the soil used to bury them, suggesting that the dream of independence would live on.

Coming of Age in a Low-Density Universe

Posted in Biographical, Open Access, The Universe and Stuff with tags , , , , on August 25, 2024 by telescoper

I was reminded just now that 30 years ago today, on 25th August 1994, this review article by myself and George Ellis was published in Nature (volume 370, pp. 609–615).

Sorry for the somewhat scrappy scanned copy. The article is still behind a paywall. No open access for the open Universe!

Can this really have been 30 years ago?

Anyway, that was the day I officially became labelled a “crank”, by some, although others thought we were pushing at an open door. We were arguing against the then-standard cosmological model (based on the Einstein – de Sitter model), but the weight of evidence was already starting to shift. Although we didn’t predict the arrival of dark energy, the arguments we presented about the density of matter did turn out to be correct. A lot has changed since 1994, but we continue to live in a Universe with a density of matter much lower than the critical density and our best estimate of what that density is was spot on.

Looking back on this, I think valuable lessons would be learned if someone had the time and energy to go through precisely why so many papers at that time were consistent with a higher-density Universe that we have now settled on. Confirmation bias undoubtedly played a role, and who is to say that it isn’t relevant to this day?

Research Ireland: a wasted opportunity?

Posted in Science Politics with tags , , , on August 25, 2024 by telescoper

The Government of Ireland has announced the Members of the Board of the newly-formed agency Taighde Éireann – Research Ireland. The names are:

  • Dr Eoin O’Sullivan
  • Anne Vaughan
  • Professor Niamh Moloney
  • Professor Valeria Nicolosi
  • Dr. Godfrey Gaston
  • Professor Rebecca Braun
  • Patricia Quane
  • Lorraine Allen
  • Leonard Hobbs

You can find biographies, together with one of the Chair, Michael Horgan, here. Looking through the list I see just one practising scientist, Valeria Nicolosi, who is an industrial chemist specialising in nanoscience. Among the other biographies you will find expertise in technology, entrepreneurship, and generic businessy things. but very little to do with actual research. And there’s nobody at all on the Board to champion fundamental science or any other curiosity-driven research. It appears that the misguided short-termism of Science Foundation Ireland is to be continued into the new organization.

Like many scientists working in Ireland, I was optimistic that the merger of the IRC with SFI would provide an opportunity to rebalance Ireland’s research ecosystem to have less emphasis on applied research. I hope I’m proved wrong, but it looks like that opportunity is to be squandered.

New Student Accommodation in Maynooth

Posted in Maynooth with tags , , , on August 24, 2024 by telescoper

I was interested to see a new advertisement for “student accommodation” in Maynooth containing the picture on the left. It’s a new development called The Duke, which was formerly a bar and nightclub called The Duke and Coachman and, before that, The Leinster Arms. It is a prime location on Main Street, and had been empty for a while, so it is good to see it being put to use.

I was walking past the place this afternoon so took a picture of it (right). As you can see, the reality is quite different from the advertisement. I think someone has been doing a bit of photoshopping! In fact the development is nowhere near finished; the area behind it is a construction site. That’s why the advertisement has no photographs of the interior.

I didn’t post this because of the photograph, however. The point is the price. A double room will cost €1500 per month (after you’ve paid a €800 letting fee). That seems very pricey for student accommodation! For comparison, a single en suite room in campus accommodation at Maynooth costs €650 per month.

Apparently there will be 90 rooms in this development. While accommodation is much needed, 90 rooms represent a drop in the ocean when there are over 15,000 students at Maynooth University, and the University Management wants that number to keep increasing so it can afford to pay for the legions of new managers it has appointed. Where will they live?

New Publication at the Open Journal of Astrophysics

Posted in OJAp Papers, Open Access, The Universe and Stuff with tags , , , , on August 24, 2024 by telescoper

It’s Saturday morning so it’s time for the usual weekly update of publications at the Open Journal of Astrophysics. Once again this week’s report will be short because there is only one paper to report this week, being  the 69th paper in Volume 7 (2024)  and the 184th  altogether. It was published on Wednesday 21st August 2024.

This week has been a bit strange, actually. We have actually accepted four papers that I was expecting to publish this week but only one has been published because the authors of the others have not yet put the final versions on arXiv. I suppose this is due to ongoing holidays and they’ll appear in due course. The other thing that happened was that when I published the paper below I discovered that the Crossref system was down for a scheduled upgrade that took a whole day to complete. Although I published the paper on 21st August I couldn’t register the metadata, etc, until 22nd August. Just as well I didn’t have more to do really!

Anyway, the title of the latest paper is is The compact circumstellar material of SN 2024ggi: another supernova with a pre-explosion effervescent zone and jet-driven explosion and it  is in the folder marked High-Energy Astrophysical Phenomena. The author is Noam Soker of Technion, Haifa, in Israel; the paper presents a possible explanation of then properties of recently-observed supernova SN 2024ggi.

Here is the overlay of the paper containing the abstract:

 

 

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