Forgetfulness – Billy Collins

Posted in Poetry with tags , , on August 10, 2025 by telescoper
The name of the author is the first to go
followed obediently by the title, the plot,
the heartbreaking conclusion, the entire novel
which suddenly becomes one you have never read, never even heard of,

as if, one by one, the memories you used to harbor
decided to retire to the southern hemisphere of the brain,
to a little fishing village where there are no phones.

Long ago you kissed the names of the nine muses goodbye
and watched the quadratic equation pack its bag,
and even now as you memorize the order of the planets,

something else is slipping away, a state flower perhaps,
the address of an uncle, the capital of Paraguay.

Whatever it is you are struggling to remember,
it is not poised on the tip of your tongue
or even lurking in some obscure corner of your spleen.

It has floated away down a dark mythological river
whose name begins with an L as far as you can recall

well on your own way to oblivion where you will join those
who have even forgotten how to swim and how to ride a bicycle.

No wonder you rise in the middle of the night
to look up the date of a famous battle in a book on war.
No wonder the moon in the window seems to have drifted
out of a love poem that you used to know by heart.

by Billy Collins (b 1941)

National Famine Way

Posted in Biographical, History, Maynooth with tags , , , , , on August 9, 2025 by telescoper

Yesterday evening on my way out for a meal I got talking to a couple of people who asked for directions. It turned out that they were on the National Famine Way which, to my shame, I hadn’t heard about. When I got home I looked up the website and decided to put it on my list of things to do. The question is whether I can fit it in before term starts near the end of September…

In a time filled with tales of hunger and hearbreak, the National Famine Way commemorates just one example of the cruelty inflicted on Ireland’s poor. No fewer than 1490 starving tenants of the Mahon estate at Strokestown were evicted from their homes then marched along the Royal Canal to Dublin, escorted by the Bailiff responsible for the evictions. At Dublin they travelled by steamer to Liverpool and then crossed the Atlantic on an assortment of coffin ships bound for Canada, about a third of them dying on the way. This was called “assisted emigration”.

The sorrowful journey of the emigrants is marked by 32 pairs of bronze sculptures of children’s shoes on the National Famine Way walking trail.  There is a pair at Maynooth harbour, though I’ve never noticed it.

The 165km historical trail from Roscommon to Dublin weaves mostly along the Royal Canal , which passes through Maynooth. The trail starts in Strokestown Park at the National Famine Museum and ends at the Famine statues in Dublin Docklands, close to EPIC The Irish Emigration Museum, Dublin. On foot it’s a relatively gentle but long six days of walking, which will give me a chance to exercise my old knees as well as staying overnight few places along the way giving me the opportunity to see a bit more of Ireland. Being alongside the Royal Canal it’s very flat so, although it’s a reasonable distance each day, it shouldn’t be too strenuous.

Maynooth is the last stop before Dublin, actually, so I’ll be able to stay at home for the night before doing the final stage of 27km. I was a bit worried about getting to the start, in deepest Roscommon, but there is a bus from Maynooth that goes direct to Strokestown where the jouney starts. There are recommendations of places to eat and places to stay on the way so it should be fairly relaxed. At any rate it will certainly be more comfortable than the journey of the poor souls that made the same trip in 1847, at the height of the Great Famine.

P.S. Come to think of it, I might just do the 27km from Maynooth to Dublin one day just to check out if my knees can take it.

Weekly Update from the Open Journal of Astrophysics – 09/08/2025

Posted in OJAp Papers, Open Access, The Universe and Stuff with tags , , , , , , , , , , , , , , , , , , , , , on August 9, 2025 by telescoper

It’s Saturday morning so, once again, it’s time for an update of papers published at the Open Journal of Astrophysics. Since the last update we have published four new papers, which brings the number in Volume 8 (2025) up to 114, and the total so far published by OJAp up to 349.

The 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 “Caught in the Act of Quenching? – A Population of Post-Starburst Ultra-Diffuse Galaxies” by Loraine Sandoval Ascencio & M. C. Cooper (UC Irvine), Dennis Zaritsky, Richard Donnerstein & Donghyeon J. Khim (U. Arizona) and Devontae C. Baxter (UC San Diego). This paper was puvblished on Monday 4th August and is in the folder marked Astrophysics of Galaxies. It discusses a sample of Ultra-Diffuse Galaxies (UDGs) found to be post-starburst galaxies through spectroscopic analysis analysis of candidates selected from the Systematically Measuring Ultra-Diffuse Galaxies (SMUDGes) program.

The overlay is here:

 

 

The officially-accepted version can be found on arXiv here.

Next one up, published on Tuesday 5th August, in the folder Cosmology and Nongalactic Astrophysics, is “Damping Wing-Like Features in the Spectra of High Redshift Quasars: a Challenge for Fully-Coupled Simulations” by Nick Gnedin & Hanjue Zhu (University of Chicago, USA).  This paper presents a discussion of the difficulties that cosmological radiation transfer codes have in accounting for the existence of “neutral islands” in the universe at relatively low redshifts.

The overlay is here:

 

 

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

The third paper of the week is “Spectroscopic Analysis of Pictor II: a very low metallicity ultra-faint dwarf galaxy bound to the Large Magellanic Cloud” by Andrew Pace (U. Virginia, USA) and 32 others based in the USA, UK, Canada, Chile and Spain. This one was also published on Tuesday 5th August but in the folder Astrophysics of Galaxies. It describes Magellan/IMACS and Magellan/MIKE spectroscopy of the ultra-faint dwarf (UFD) galaxy Pictor II, which is located only 12 kpc from the Large Magellanic Cloud (LMC).

The overlay is here:

 

The final version is on arXiv here.

The fourth, and final, paper of the week, also published on Thursday 7th August, is “ASASSN-24fw: An 8-month long, 4.1 mag, optically achromatic and polarized dimming event” by Raquel Forés-Toribio (Ohio State University) and 22 others based in the USA, Austria, Chile and Australia. It is published in the folder Solar and Stellar Astrophysics, and it presents an observational study of an unusual dimming event likely to have been caused by eclipsing of a binary system by a dusty disk.

Here is the overlay:

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

And that’s all the papers for this week. I’ll do another update next Saturday.

P.S. For those of you who missed the post I did earlier in the week, I have been looking at the accounts for the Open Journal of Astrophysics and can confirm that the cost to us per paper is less than $30 and will reduce with scale. We expect to publish around 180 papers in 2025 for which the total cost incurred by OJAp will be around $5000. Obviously if we increase by a factor, say, ten then that amount would become significant so we are taking steps to secure additional funding in the event that happens.

Points of the Compass

Posted in Biographical with tags , , , , , , , , on August 8, 2025 by telescoper

A while ago I posted about the countries that I’ve visited over the years. The result is summarized in this map:

You can see that I haven’t seen that much of the world. In fact the map exaggerates what I have seen, because the only place I have visited in Canada was Toronto (and some places to the West of that); I have visited the USA too, but not Alaska.  Likewise the only bit of Australia I’ve visited is Sydney and environs.

Anyway, I saw a thread on BlueSky yesterday which was asking people what was the furthest places on land they have visited North, South, East, and West. Here are my answers:

  • North. Tromsø (Norway), Latitude 69° 39′ N;
  • South. Cape Town (South Africa), Latitude 33° 55′ S;
  • East. Sydney (Australia). Longitude,  151° 12′ E;
  • West. San Francisco (USA). Longitude, 122° 27′ W.

I was initially tempted to put Nagoya (Japan) as my furthest East, but at a mere 136° 55′ it’s nowhere near as far East as Sydney. I wasn’t sure which of Sydney or Cape Town is furthest South either, but Sydney is just a little further North (33° 52′). I went to Tromsø years ago for an Aurora watch, which was great fun. Other than that my furthest North is Reykjavik (Iceland). Many of my observational astronomy colleagues will have been to Hawaii, which easily beats me in the westerly direction. Others have been to Antarctica, which beats me down under.

So my span is about 270° E-W (maximum of 360°) and about 103° N-S (maximum of 180°). Not that impressive really.

Anyway, should you be so inclined, feel free to add your own extremities via the comments box!

Alternatives to Scopus

Posted in Open Access with tags , , , , , on August 7, 2025 by telescoper

Yesterday I had a very interesting meeting with the Library Staff who are working behind the scenes on the Open Journal of Astrophysics. Most of the meeting was about reviewing the finances of the journal, so I had a look at the official accounts. These confirmed that the total cost incurred is under $30 per paper. The financial year here at Maynooth runs from October 1st to September 30th – don’t ask me why – so this year is not yet complete but will be just over $5000 dollars. We will have published about 180 papers in that period.

People ask me how the journal can be so inexpensive, and the answer is that we keep publishing costs to a minimum by offering a “no frills” service, and also because our editors and referees are all unpaid.

Anyway, in the course of the meeting I mentioned Scopus (which is owned by publishing behemoth Elsevier). This is used by many universities and funding agencies as a source of bibliometric information, but my experience is that it is unreliable and poorly managed. I thought I would share a few other, better, bibliometric databases here.

We have for some time being indexed in the Directory of Open Access Journals (DOAJ) and in fact our articles’ metadata are automatically deposited there every time we publish a paper. This however only covers fully Open Access journals which excludes some journals.

The go-to repository for astrophysicists is the NASA Astrophysics Data System, known to its friends as ADS. This has very complete bibliographic information going back over 100 years, as well as links to catalogues and other supplementary information. It’s also fairly complete for general physics.

Scopus being so awful I was pleased to find a system which is more general than NASA/ADS but with wider coverage. OpenAlex fits the bill rather well. It’s not quite complete but far better than Scopus. Articles from the Open Journal of Astrophysics are index there, and the information is almost as complete as NASA/ADS.

One candidate is Scimago. This is largely concerned with the (in my opinion) pointless task of journal rankings, but the Open Journal of Astrophysics is listed there. Again the information is not totally complete, but it’s not bad.

One thing I’ve learned over the last few years is that if you want to compare the impact of journals or individual articles it’s absolutely essential to use the same source of information because there is a huge variation between databases. When I look at astrophysics articles I always use NASA/ADS, but in other fields you could use OpenAlex or Scimago. There are no circumstances that justify the use of Scopus, even if your boss tells you to…

Good Luck in Your Repeat Exams!

Posted in Education, Maynooth with tags , , , on August 6, 2025 by telescoper

Since the repeat examination period at Maynooth University starts today, Wednesday 6th August, I thought’d I’d send a quick message for students taking one or more exams…

Cricket Limbo

Posted in Cricket, Music with tags , , , , , on August 5, 2025 by telescoper

Since moving to Ireland I haven’t seen much cricket, though I do follow some games on the internet and watch the highlights from time to time. Yesterday’s final-day victory by India over England by just six runs at the Oval brought to an end an excellent series of five Test matches, drawn 2-2 with one match drawn. Chris Woakes had to go into bat at Number 11 with an arm in a sling because of a dislocated shoulder. Shades of Colin Cowdrey going in to bat against the West Indies at Lord’s in 1963 with a broken arm. Neither Cowdrey nor Woakes faced a ball, actually. England drew in 1963, while still six runs behind with one wicket standing, while Woakes was not out as India won by six runs. A series draw just about seems a fair result to me.

Test cricket is something special and the 2025 England vs India series had more than the usual share of memorable moments. The two teams were evenly matched, tempers got a bit frayed from time to time, but both sides should be congratulated for providing such magnificent fare. A Test Match series is a cricket feast like no other.

As Keith Flett mentions in his blog, the Oval test has traditionally the last of the summer, usually taking place later in August, the lengthening shadows given that distinctive end-of-season feel. This year, however, the Oval test finished on 4th August (yesterday), and there’s no more Test cricket this summer. The schedule has been pushed forward to accommodate the gimmicky and unintestering competion called The Hundred, which starts today. The first of the last three County Championship fixtures don’t start until September 8th. It’s all a bit shit, really.

Anyway, just for nostalgia’s sake, I thought I’d post the old theme song from the BBC’s cricket coverage (when it used to be free on TV). It is Soul Limbo by Booker T. & the M.G.’s. We never got to hear the whole track, but as proper cricket is in Limbo for a month it seems appropriate to do so now.

Autumn Repeats

Posted in Education, History, Maynooth with tags , , , , , on August 5, 2025 by telescoper

As I mentioned yesterday, it is almost time for the repeat examination period to begin once again. In fact the first papers are due tomorrow (6th August). A couple of years ago, Maynooth University produced this nice good luck message for those resitting so I’ll repeat it here:

I was a bit surprised when I first arrived here in Ireland that the August repeat examinations are called the Autumn Repeats. After all, they happen in August which is generally regarded as summer rather than Autumn. The term is, I think, a relic of the old Celtic calendar in which the start of Autumn coincides with the start of harvesting, the old festival of Lúnasa being when people celebrated the Celtic deity Lugh, who would bring a good harvest or who, if not satisfied, could bring his wrath to bear in storms that would mess everything up. Lúnasa is the name for August in modern Irish; Lá Lúnasa is 1st August, and the first Monday in August (Lá Saoire i mí Lúnasa) (yesterday) is a Bank Holiday.

Anyway, the repeat examinations start tomorrow and go on for ten days or so, I will have four different papers to grade, though I’m expecting only one candidate each for three of them.

Every year at this time I mention the difference between the system of repeats in Maynooth compared to other institutions with which I am familiar, especially in the UK. Elsewhere, students generally take resits when, because they have failed one or more examinations the previous May, they have not accumulated sufficient credits to proceed to the next year of their course. Passing the resit allows them to retrieve lost credit, but their mark is generally capped at a bare pass (usually 40%). That means the student gets the credit they need for their degree but their average (which determines whether they get 1st, 2nd or 3rd class Honours) is affected. This is the case unless a student has extenuating circumstances affecting the earlier examination, such as bad health or family emergency, in which case they take the resit as a `sit’, i.e. for the first time with an uncapped mark.

Here in Maynooth, however, the mark obtained in a repeat examination is usually not capped. Indeed, some students – though not many – elect to take the repeat examination even if they passed earlier in the summer, in order to increase their average mark.

Some people don’t like the idea of uncapped repeats because they feel that it would lead to many students playing games, i.e. deliberately not taking exams in May with the intention of spreading some of their examination  load into August. The Institute of Physics has decided to impose capped resits as part of its accreditation requirements. Some people here seem to think IOP accreditation is worth having so we’re being pushed into that requirement. I find it heavy-handed and unhelpful. It is also unimportant unless you want to do postgraduate study in physics in the UK. It doesn’t matter at all anywhere else.

If you think students have an unfair advantage if they don’t take a full diet of examinations in May, then the logical conclusion is that part-time students have an unfair advantage as do students taking micro-credentials consisting of just one or two modules. It’s the essence of the modular system that each module result should be considered on its own merit, not in relation to other modules a student may or may not have taken at the same time. One can of course argue whether the modular system is good or not, but if you have it then you should act consistently in accordance with it. You wouldn’t penalize students who have to work to support their study relative to those who don’t, would you?

And there’s no real evidence of students actually playing the system in the way the IOP thinks they do anyway. For one thing the results from the repeat examination period are not confirmed until early September so that students that deploy this strategy do not know whether they are going to be able to start their course until just a couple of weeks before term. That could cause lots of problems securing accommodation, etc, so it doesn’t seem to me to be a good ploy. Finallists adopting this strategy will not be able to graduate with the rest of their cohort and may miss several months of potential employment. I think most of our students are smart enough to realize that it’s a risky strategy.

Anyway, I’d welcome comments for or against whether resits/repeats should be capped/uncapped and on what practice is adopted in your institution.

Lá Saoire i mí Lúnasa

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

Today, Monday 4th August 2024, being the first Monday in August, is a Bank Holiday in Ireland. This holiday was created by the Bank Holiday Act of 1871 when Ireland was under British rule. While the August Bank holiday was subsequently moved to the end of August in England and Wales, it has remained at the start of August in Ireland.

We have had some proper Bank Holiday weather, in the form of Storm Floris. Although the worst of this passed to the West of Maynooth, the winds were powerful enough to blow one of my wheelie bins over.

As I mentioned last week, the first day of August marks the old pagan festival of Lughnasadh, named after the God Lugh, on which is celebrated the beginning of the harvest season. This coincides with the English Lammas Day, one of many Christian festivals with pagan origins. Traditionally this is the start of the harvest season and is celebrated accordingly, with rites involving the first fruit and bread baked from flour obtained from the first corn. It is also one of the cross-quarter days, lying roughly half-way between the Summer Solstice and the Autumnal Equinox (in the Northern Hemisphere).

I’m reminded that this time last year I was still on sabbatical. That seems like ages ago. When I resumed teaching last September I had to teach two modules I’d never taught before: a fourth-year Mathematical physics course on Differential Equations and Complex Analysis and a second-year Engineering Mathematics course. This time should be a bit easier as I get to do both of these again. Over the year I also had a final-year undergraduate project student and an MSc student. Both have been a pleasure to work with. The Masters course lasts a calendar year so that one isn’t quite finished, but the deadline for handing in their dissertation is close, next Monday (11th) in fact.

After I return to work tomorrow the next big item on the agenda is the repeat examination period, which starts on Wednesday August 6th. The fates have conspired to require me to be “on call” for four papers next Saturday (two of my own and two covering for a colleague): three of these are scheduled at 12.30 and the other one at 15.30 so I’l have to be by the phone all afternoon in case any matters arise. I also have three others scattered through the approximately ten days of the examination period.

After the repeat examinations are done, the marks uploaded, and the Examination Board has done its work, the next job will be to prepare for the new intake of students. This year’s Leaving Certificate results will be announced on Friday 22nd August, at which point we’ll see how many students (if any) we have studying Physics next academic year which, if all goes to plan, will be my antepenultimate…

Weekend Water Worries

Posted in Biographical, Maynooth with tags , on August 3, 2025 by telescoper

My heart sank a little last week when I received notice that Uisce Éireann would be doing major repairs to a main water pipeline in the Greater Dublin area over this bank holiday weekend. The planned works involved replacing an entire section of one of the main water pipelines, which would potentially disrupt the supply to a wide area, as demonstrated on this map:

Only a relatively small area was to have its drinking water supply cut off entirely, but residents in the rest of the shaded area above (which includes Maynooth) were requested to conserve water so as not to use up all the water already in the system that would not be replenished while the main was being replaced and a warning was in place about possible disruption to the water supply. I was worried that this might get very awkward if the works overran. Fair play to Uisce Éireann, though, because the works were completed on time earlier today. I haven’t noticed any disruption at all.

P.S. I have done my bit to help conserve water over the weekend by drinking only wine and beer.