R.I.P. Edmund White (1940-2025)

Posted in Biographical, LGBTQ+, Literature, R.I.P. with tags , on June 6, 2025 by telescoper

I was saddened to hear of the death on Tuesday at the age of 85 of novelist Edmund White. Like many gay men of my age I read his semi-autobiographical novel A Boy’s Own Story as a teenager, and it had a profound effect on me.

It’s the story of an adolescent boy coming to terms with his sexuality in the American mid-West during the 1950s. It is as frank about the description of gay sex as it is truthful about the confusion that goes with being a teenager. When I bought it I didn’t realize it was going to be so sexually explicit, as the whole subject of gay sex was very much taboo in those days. I didn’t think it was possible to write about such things in such a matter-of-fact way and at the same time so beautifully. The book is also unflinching in its description of the personality flaws of the central character.

The Irish Times has a collection of reflections by various writers on Edmund White that say far more, and far more eloquently, than I ever could. I’ll just say, as a (now) sixty-something gay man that Edmund White helped me on my journey to self-acceptance when I was a struggling teenager all those years ago, and for that I will always be profoundly grateful.

Rest in peace, Edmund White (1940-2025).

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L’elisir d’amore at the National Opera House

Posted in Opera with tags , , , , , , , , on June 5, 2025 by telescoper

My trip to Wexford was to mark a special occasion by paying my first ever visit to the National Opera House to see a performance of Donizetti’s comic opera L’elisir d’amore by Irish National Opera. It was well worth the trip, as it was a wonderfully entertaining production with lovely singing and lots of laugh-out-loud moments. In short, it was a blast.

Billed as a melodramma giocoso, but more usually called an opera buffa, this was the first Donizetti opera to be performed in Ireland, in 1838; its world premiere was in 1832 in Milan and it has been in the operatic repertoire ever since. The show-stopping Una furtiva lagrima in Act II is one of the most recorded tenor arias, the first recording of which dates back to 1904 (by Enrico Caruso).

In case you’re not aware of the opera, it tells the story of a lowly peasant (Nemorino, tenor) who is in love with the wealthy Adina (soprano), who does not return his love – understandably not just because he’s poor but because he’s a bit of a drip. In despair Nemorino turns to the fake doctor Dulcamara (bass-baritone) “famous throughout the Universe and certain other places” who has arrived in town to peddle potions and quack remedies, no doubt made from snake oil. Nemorino asks him for a philtre that will make Adina fall for him. Dulcamara has sold all his potions, but fills an empty medicine bottle with wine and tells him it’s the love potion he needs. After drinking it, Nemorino feels more confident, but Adina still isn’t interested. Worse, Adina has agreed to marry to soldier Belcore. That’s Act I.

In Act II, desperate to stop the marriage, Nemorino wants to buy some more of the love potion but he has no money so he agrees to join the army for which he is entitled to a joining fee. He spends the money on more wine and gets completely wasted, so much so that he misses the news that a rich uncle has died and left him a large inheritance. When the women of the town find out that he is now rich, they all start showing an interest in Nemorino, which he assumes is because of the love-potion. At this point Adina decides she really does love Nemorino, buys out his contract with the army, and calls off the wedding with Belcore. The soldier shrugs off his loss. Dulcamara convinces himself that he really has magical powers…

Summarizing the plot doesn’t really do justice to the opera, however, as there are numerous musical interludes, with dancing, and slapstick comedy. Donizetti’s music is wonderful, and keeps the pace going. It’s basically a theatrical farce set to music, with the score keeping everything moving at the speed that is essential to make such a thing work. Erina Tashima conducted the Orchestra of Irish National Opera with great verve.

This production is set in a comical Wild West of America, with a relatively simple set but wonderful very witty costumes. Nemorino (Duke Kim) was dressed like Woody from Toy Story, for example. We also had appearances from Calamity Jane, Laurely & Hardy (who do their “Way Out West” dance), Abraham Lincoln and even the couple from Grant Wood’s painting American Gothic. Adina (Claudia Boyle) has no fewer than five costume changes, each one into a frock more glamorous than the previous. Dulcamara was the wonderful John Molloy and there is great comedy between him and his diminutive sidekick Truffaldino (a non-singing part played by Ian O’Reilly). Belcore’s troops are kitted out like the US Cavalry, and their dancing and messing about delivers laugh after laugh. There are also sundry “peasants”, i.e. cowboys and women of the town adding to the hilarity. I give 10/10 to the members of the chorus, their Director Richard McGrath and choreographer Paula O’Reilly.

All the principles were great too. Claudia Boyle sang beautifully, but also conveyed the comic aspects of her role. Duke Kim was perfectly cast as the boyish Nemorino; he has a light and agile tenor voice, which he used to bring the house down with the big number Una Furtiva Lagrima in Act II. Belcore was baritone Gianluca Margheri (whom I saw perform in Maynooth a couple of years ago). His physique matches the muscular quality of his voice, and he wasn’t shy in showing it off by taking off his shirt onstage! John Molloy’s singing was as impeccable as his comic timing in the role of Dulcamara. I think he got the most laughs, in a production that produced many.

This triumphant production plays L’elisir d’amore for laughs and wins by a knockout. Sadly there’s only one performance left in this run, in Cork on Saturday 7th June. Do go if you can!

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To Wexford and Back

Posted in Biographical with tags , , , on June 5, 2025 by telescoper

I’m currently on the train travelling back from Wexford to Dublin. The WIFI is a bit flaky so I’ll post more about the reasons for this trip later on, when I get home.

For the moment, I’ll just say that Wexford (Irish name: Loch Garman) is a picturesque historic town at the  mouth of the River Slaney, near the Southeastern corner of Ireland. I had a nice walk around this morning. It’s a pleasant place to stroll about; the streets still follow an obviously mediaeval layout, and parts of the old city wall are still standing.

The train journey from Dublin is very enjoyable, right along the coast for a while, then heading inland, then along the banks of the Slaney. The train isn’t very fast, but it is comfortable and costs less than €10 each way. There’s only a single line from Wicklow to Wexford, which severely limits the number of trains that can operate on the route. The same is true of the Maynooth-Sligo service, actually.

When I moved to Ireland (about 7 1/2 years ago), I planned to travel around and see some of the historic places. Workload issues and the pandemic put paid to that idea for a while, but I have a bit more time to travel now.

P.S. Curracloe Beach, a few miles North of Wexford, stood in for Omaha Beach for the film Saving Private Ryan. I didn’t have time to go there.

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The Leaving

Posted in Biographical, Education, mathematics, Maynooth with tags , , , , , on June 4, 2025 by telescoper

Today is not only a significant date for me (in more ways than one), but it’s important for many young people in Ireland because the Junior Certificate and Leaving Certificate examinations both start today, so the first thing I need to do is wish everyone starting their examinations the very best of luck!

Among other things, the results of the leaving certificate examinations are important for September’s university admissions. This year the grade inflation that occurred during the pandemic years will be reduced, though it is not yet clear how. Whatever happens is likely to have a big impact on student recruitment to third-level institutions.

In the system operating in England and Wales the standard qualification for entry is the GCE A-level. Most students take A-levels in three subjects, which gives them a relatively narrow focus although the range of subjects to choose from is rather large. In Ireland the standard qualification is the Leaving Certificate, which comprises a minimum of six subjects, with many students taking more than this. This gives students a broader range of knowledge at the sacrifice (perhaps) of a certain amount of depth; it has been decreed for entry into this system that an Irish Leaving Certificate subject counts as about 2/3 of an A-level subject for admissions purposes, so Irish students do the equivalent of at least four A-levels, and many do more than this. It’s also worth noting that all students have to take Mathematics at Leaving Certificate level.

One can choose to do Leaving Certificate subjects at Ordinary or Higher level and there’s quite a big difference between the two, especially in Mathematics (of which more below).

Overall I prefer the Leaving Certificate over the UK system of A-levels, as the former gives the students a broader range of subjects than the latter (as does the International Baccalaureate). I would have liked to have been allowed to take at least one arts subject past O-level, for example.

For University admissions points are awarded for each paper according to the marks obtained and then aggregated into a total CAO points, CAO being the Central Applications Office, the equivalent of the UK’s UCAS. This means, for example, that our main Science pathway at Maynooth allows students to study Physics without having done it at Leaving Certificate level. This obviously means that the first year has to be taught at a fairly elementary level, but it has the enormous benefit of allowing us to recruit students whose schools do not offer Physics.

There is however a big problem with Mathematics. It was decided some years ago that students would get 25 extra CAO points if they got a mark of at least 40% in Higher Mathematics. This has led to more students taking the subject, which is good, but there are signs that this may have led to a decline in standards. If, for example, the marking is such that a fixed proportion of students get the top grade but more weaker students take the examination, that means that standards fall at the top end. For more discussion, see here.

Anyway, our Theoretical Physics & Mathematics course requires a good result in Higher Mathematics for entry. Will changes to the marking of Higher Mathematics this year make it harder for students to make the grade? We’ll just have to wait and see.

Moreover, since the pandemic struck, students have been able to choose to answer questions from a limited range of sections on the mathematics examination papers. That means that students can get very high grades despite knowing nothing about a big chunk of the syllabus. That matters most for subjects that require students to have certain skills and knowledge for entry into University, such as Physics. I taught part of our first year Mathematical Physics course in Maynooth for about 5 years. It was noticeable how the fraction that were comfortable with basic differentiation and integration was falling. Will this trend accelerate? Again, we’ll just have to wait and see…

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Funding Diamond Open Access

Posted in Open Access with tags , , , , , on June 3, 2025 by telescoper

In case you weren’t aware, SciPost is a publishing infrastructure that provides Diamond Open Access to scientific papers. That means they are free to publish and free to read. They are funded by a consortium but are now struggling financially. They have recently circulated an open letter to the Community explaining their predicament and asking for help. I encourage you to read it and, if you can, to make a donation (or bully your institution to do so).

The open letter explains that SciPost is currently running at an average cost per paper of €500. That is much less than a typical APC for a mainstream journal but it is not a negligible cost. At the rate at which SciPost is publishing it amounts to about €1000 per day. SciPost currently attracts a significant level of sponsorship but it is not enough to support its current level of activity. Information on how to help SciPost can be found here. It is a worthy cause and deserves to be supported.

One area in which SciPost has not really taken of is Astronomy, where it has published very few papers. This may at be at least partly because of the Open Journal of Astrophysics (OJAp) which is also Diamond Open Access but runs in a very different and much cheaper way. A full breakdown of costs at OJAp is given here our annual running costs are about €5000 per year, which works out at less than €50 per paper (on average); that comprises a fixed component and a marginal cost of €10 per paper.

The main reasons for the large difference in running costs are: (i) SciPost maintains and runs its own platform; and (ii) it offers a copy-editing service. OJAp piggy-backs on arXiv (where most astrophysics research papers are found anyway) and expects authors to provide the final version of their own work. Neither organization pays referees or Editors. To enable it to run, SciPost employs about three staff full-time (2.9 FTE to be precise); OJAp has no employees and we keep our costs down by offering a ‘no-frills’ service. Instead of having a wide range of sponsors, we are entirely funded by Maynooth University. I am very grateful for that support, but we are run on a shoestring budget.

I have written before about what I think the future of Diamond Open Access could be like. I would like to see a range of Diamond Open Access journals offering a choice for authors and serving different sub-disciplines. Most universities nowadays have publishing operations so there could be network of federated journals, some based on arXiv and some based on other repositories and others with different models, such as SciPost. Perhaps institutions are worried about the expense but, as we have shown the actual cost, is far less than they are wasting on Article Processing Charges.

I don’t see other Diamond Open Access journals as competitors, but as allies with community-led ecosystem. I’d be more than happy to discuss how to start up such a journal on the OJAp model with anyone interested, and have already done so with some interested parties. As far as I’m concerned, the more the merrier! It is neither fair nor reasonable, however, that the expense of running a journal that serves the global astrophysics community should fall entirely on one small University in Ireland.

By all means support SciPost (and get your institutions to do likewise), but please also consider supporting OJAp. We are currently covering our costs but have no funds to make enhancements (such as a much-needed new LaTex template). If you can afford to make a donation to SciPost, then perhaps you can afford to make a donation to OJAp proportionate to our lower running costs? For example, if you give €10K to SciPost, could you give us €1K too? That amount would keep SciPost running for a day and OJAp for many months…

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Firearms Units

Posted in The Universe and Stuff on June 2, 2025 by telescoper

Disturbed by the news of a shooting incident in Carlow yesterday that resulted a man’s death, I thought I’d check what the rules are for owning firearms in Ireland. I found a summary here. This is the introduction:

Spot the deliberate mistake!

I don’t possess an airgun, but I understand the pellets they fire range have a mass of at least 0.675 grammes. If, as seems likely, it is the kinetic energy of the pellet that is limited to 1 joule, then what is the maximum allowed muzzle velocity for an unlicensed airgun? Give your answer in metres per second.

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Lá Saoire i mí Mheitheamh

Posted in Biographical, History, Irish Language, Maynooth on June 2, 2025 by telescoper

It’s a Bank Holiday Monday here in Ireland, which makes for a nice end-of-term break for some of us. Not all staff had exams early enough to finish in time like I did, however, and no doubt some had to spend the weekend marking exam scripts. I am fortunate to have been able to accomplish everything I intended over the weekend – nothing at all – and today I’ll be able to recover from that exertion.

The June Bank Holiday (Lá Saoire i mí Mheitheamh) in Ireland is the equivalent of last week’s late May Bank Holiday in the UK, in that both have their origin in the old festival of Whitsuntide (or Pentecost) which falls on the 7th Sunday after Easter. Because the date of Easter moves around in the calendar so does Whit Sunday, but it is always in late May or early June; this year it falls on Sunday 8th June.

As if in celebration, the honeysuckle in my garden has started to flower:

The day after Pentecost was traditionally a holiday known as Pentecost Monday or Whit Monday. This enabled people to attend extra church services and organize local fairs and cultural events. Pentecost Monday became a public holiday in Ireland following the Bank Holidays Act 1871 which applied before Ireland became independent. Following the Holidays (Employees) Act 1973, this holiday was moved to the First Monday of June. This new date was first observed in 1974. This is why
we have the first Monday in June off work instead of the last Monday in May.

Although I’m only at beginners’ level in Irish, the phrase Lá Saoire i mí Mheitheamh gives me a chance to bore you about it. It’s actually quite a straightforward phrase until you reach the last word. “Lá” means “day” and “Saoire” means “leave” or “vacation” so “Lá Saoire” means “holiday”; “i” is a prepositional pronoun meaning “in” and “mí” means “month”. So far so good.

The word for June, however, is Meitheamh (at least when it is in the nominative singular case). Irish is an inflected language, which means that words change form according to their grammatical function. As an Indo-European language, Irish is distantly related to Latin which has six grammatical cases for nouns (actually seven if you count the rarely used locative case). Irish has only four cases – there’s no ablative and, curiously, no distinction between nominative and accusative. That leaves nominative, dative, genitive, and vocative. The dative – used after simple prepositions – is only rarely distinct from the nominative so basically the ones you have to learn are the genitive and the vocative.

In Latin cases are indicated by changes to the end of a word, but in Irish they involve initial mutations. In the example of “mí Mheitheamh” meaning “month of June”, requiring the genitive form of “June”, the initial consonant “M” undergoes lenition (softening) to sound more like a “v”. In old Irish texts this would be indicated by a dot over the M but in modern orthography it is indicated by writing an “h” after the consonant. This is called a séimhiú (pronounced “shay-voo” ). Note the softened m in the middle of that word too but it’s not a mutation – it’s just part of the regular spelling of the word, as is the -mh at the end of Meitheamh. There’s also a softened “t” in the middle of Meitheamh which makes it vrtually disappear in pronunciation. Meitheamh is thus pronounced something like “Meh-hiv” whereas “Mheitheamh” is something like “Veh-hiv”.

Gheobhaidh mé mo chóta…

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The Shaw Prize for Astronomy 2025

Posted in The Universe and Stuff with tags , , , , on June 1, 2025 by telescoper
Dick Bond (left) and George Efstathiou (right)

I’m a few days late on this, as the announcement on 27th May came at a very busy time, but it’s a pleasure to pass on the news that the 2025 Shaw Prize for Astronomy has been awarded to Dick Bond and George Efstathiou. Congratulations to both on a very well deserved award!

The full citation can be found here, but the first paragraph reads:

The Shaw Prize in Astronomy 2025 is awarded in equal shares to John Richard Bond, Professor of the Canadian Institute for Theoretical Astrophysics and University Professor at the University of Toronto, Canada and George Efstathiou, Professor of Astrophysics at the University of Cambridge, UK for their pioneering research in cosmology, in particular for their studies of fluctuations in the cosmic microwave background. Their predictions have been verified by an armada of ground-, balloon- and space-based instruments, leading to precise determinations of the age, geometry, and mass-energy content of the universe.

One of the first papers I was given to read when I started my postgraduate studies in 1985 was the pioneering Bond & Efstathiou (1984) “Cosmic background radiation anisotropies in universes dominated by nonbaryonic dark matter”. Here is the abstract:

This work was hugely influential and prescient in many ways. It does remind me, though, that in the 1980s, before the detection of large-scale anisotropies by the Cosmic Background Explorer (COBE) announced in 1992, the prevailing mentality was to find models in which the predicted cosmic microwave background anistropies were as small as possible. The COBE fluctuations turned out to be rather larger than those predicted in the model discussed in the paper, which was one reason why the standard cosmological model now has a lower density of dark matter than then.

On a more technical level, the paper also reminds us that it was to be a while until the angular power spectrum, as opposed to the correlation function, became the standard tool it is now for quantifying the statistical properties of these temperature fluctuations.

The Shaw Prize wasn’t awarded for just this paper, of course, but I think it’s emblematic of the sustained importance and influence of the work of the Laureates over many years.

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Season Finale at the National Concert Hall

Posted in Biographical, Music with tags , , , , on May 31, 2025 by telescoper

It was very nice to be able to put the marking of examinations behind me and travel into Dublin last night for the final concert of the season at the National Concert Hall in Dublin. It seems the former NSO is now to be called the NSOI, the National Symphony Orchestra Ireland, no doubt for some sort of corporate branding reason. Anyway, last night they were under the direction of guest conductor Anja Bihlmaier for a performance of the Symphony No. 9 by Gustav Mahler.

Looking back through my previous posts about Mahler I see that I haven’t previously written anything about his 9th Symphony. I am pretty sure that last night was the first time I’ve heard it live, although I have it on CD. Mahler wrote it between 1908 and 1909, immediately after finishing Das Lied von der Erde which is a symphony in all but name and which should really be his 9th. He was a very superstitious man, however, and he was worried about the Curse of the 9th, so it wasn’t given a number. After the acual 9th Symphony he went on to compose another, his 10th (though really the 11th), though he didn’t quite finish it before his death in 1911. I hope this clarifies the situation.

The 9th Symphony is a substantial piece last about 80 minutes in performance. That’s far from his longest, but it does justify it being performed on its own. The structure is unusual, with two very long slow movements either side of a pair of shorter movements, a scherzo and a rondo. The former is constructed from dance-like segments, and much of it is in 3/4 time; it reminded me a little of Ravel’s La Valse, which starts out like a standard waltz but disintegrates into a nightmarish parody of that form. The rondo described as “Rondo-Burleske” is very fragmented, grotesque and at times raucous, and also very modern-sounding. It has been described as “ferocious outburst of fiendish laughter at the futility of everything”. I think the final adagio movement is the best, and it brought out the best of the NSOI. The long sweeping passages played by only the strings, with the cellos and double-basses providing deep foundations to Mahler’s sumptuously textured harmonies. Absolutely gorgeous.

The Symphony ends very quietly indeed. Anja Bihlmaier kept her baton in hand for quite a long time before putting it down and letting the applause start. A little silence at the end of a piece of music is a very good thing: it allows the members of the audience a brief moment to reflect on what they have heard. It irks me when people starting clapping and shouting before the sound has even died away.

Anyway, when it was over, the applause was tumultuous. I’ve already mentioned the string sections, but ll the members of the NSOI contributed with outstanding contributions from the woodwinds and brass too.

There being only one item on the menu there was no wine break, but not having an interval meant that I had time to have a drink at the end before heading back to Pearse station to get the train back to Maynooth. In the old days the NCH used to treat the audience to a free prosecco after the season finale, but not any more. I had to buy my own.

Well, this season may be over, but the booklet for next season is already out. I had a look through it on the train home. I plan to resume my Friday-night concert-going at the NCH in September, but there will be more music before then.

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Weekly Update from the Open Journal of Astrophysics – 31/05/2025

Posted in OJAp Papers, Open Access, The Universe and Stuff with tags , , , , , , , , , , , , , , , on May 31, 2025 by telescoper

Once again it’s time for the weekly Saturday morning update of papers published at the Open Journal of Astrophysics. Since the last update we have published five new papers, which brings the number in Volume 8 (2025) up to 67; the total so far published by OJAp has passed the 300 mark and is now up to 302. If we keep up at the same rate for the rest of the year as we did for the first five months now completed, we will publish around 160 papers altogether in 2025.

In chronological order of publication, the five papers published this week, with their overlays, are as follows. You can click on the images of the overlays to make them larger should you wish to do so.

The first paper to report is “Which is the most eccentric binary known? Insights from the 2023/4 pericenter passages of Zeta Boötis and Eta Ophiuchi” by Idel Waisberg, Ygal Klein and Boaz Katz (Weizmann Institute of Science, Israel).  This is a report of interferometric observations of two very eccentric binary star systems, published on Tuesday 27th May 2025 in the folder Solar and Stellar Astrophysics. The overlay is here:

You can read the final accepted version on arXiv here.

The second paper to report is “On the full non-Gaussian Surprise statistic and the cosmological concordance between DESI, SDSS and Pantheon+” by Pedro Riba Mello & Miguel Quartin (Universidade Federal do Rio de Janeiro, Brazil), and Bjoern Malte Schaefer & Benedikt Schosser (Heidelberg, Germany). This paper is in the folder Cosmology and NonGalactic Astrophysics and was published on Tuesday 27th May 2025. The paper presents an application of the “Surprise Statistic”, based on the Kullback-Leibler divergence, as a measure of the difference between results inferred from different data sets.

The overlay is here:

 

You can find the officially-accepted version of the paper on arXiv here.

The third paper we published last week, and our 300th overall, is “Cosmic Ray Feedback in Massive Halos: Implications for the Distribution of Baryons” by Eliot Quataert (Princeton, USA) and Philip F. Hopkins (Caltech, USA).  This was published on Thursday 29th May in the folder Cosmology and NonGalactic Astrophysics. The paper discusses the effects of cosmic rays produced by massive black holes on the structure of the baryonic component of galaxies and how these might affect cosmological parameter estimation. The overlay is here:

 

You can read the officially accepted version of this paper on arXiv here.

The next one to report is “Mixing neutron star material into the jets in the common envelope jets supernova r-process scenario” by Noam Soker (Technion, Israel). This was published on Thursday 27th May in the folder High-Energy Astrophysical Phenomena; it presents a discussion of the chemical enrichment of an evolved star consequent upon its ingestion of a neutron star.

The overlay is here:

You can find the officially accepted version on arXiv here.

Last, but by no means least, for this week we have “Dark Energy Survey Year 6 Results: Synthetic-source Injection Across the Full Survey Using Balrog” by Dhayaa Anbajagane (Kavli Institute, Chicago) et al. (81 authors) on behalf of the Dark Energy Survey Collaboration. It was also  published on Thursday 27th May  2025, but in the folder Cosmology and NonGalactic Astrophysics. It is about testing the Dark Energy Survey analysis pipeline using synthetic sources.

The overlay is here:

 

You can find the officially accepted version on arXiv here.

That’s all the papers for this week. I’ll post another update next weekend.

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