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Crosaire Puzzles

Posted in Biographical, Crosswords with tags , , on November 27, 2025 by telescoper

Every now and then I get talking over lunch to a distinguished Emeritus Professor at Maynooth University, Tony O’Farrell, about various things. A topic that came up recently was crossword puzzles, which reminded me that I haven’t posted much on that subject for a while. Regular readers of this blog will know that in the past I used to do a lot of crosswords, including the Guardian puzzles almost every day and Azed and Everyman in the Observer on Sundays. Since I moving to Ireland I have weaned myself off the UK newspapers so my regular crossword-solving is nowadays limited to the Times Literary Supplement and Cyclops in Private Eye. Since my TLS subscription has now lapsed, the only one I do regularly is Cyclops.

When I first arrived here almost eight years ago I had a look at the crosswords in the Irish Times. I had a go at the cryptic puzzle – called Crosaire – but didn’t find it particularly challenging (and there’s no prize competition) so never got into the habit of doing it. It’s about the same level of difficulty as Everyman, in my opinion, which I used to do mainly to limber up for Azed. I buy the Weekend Edition on paper and have an online subscription, but rarely look at the crossword.

After chatting with Tony, however, I decided to look at Crosaire again. I had a class test to supervise today so thought I would look at the puzzle that appeared in Saturday’s Weekend Edition as I still had the paper copy. The solution has already been published so I won’t be spoiling anyone’s fun!

Anyway, here is Saturday’s puzzle (obtained from the Irish Times website)

I see that the screen grab misses the clue for 23 across, which is “Say goodbye, thus perish in Australia (5)”. That’s one of the easy clues; the solution is ADIEU. Other easy ones are 18 down (BLT) and 20 across (NUCLEAR)

Overall, it’s a fairly straightforward cryptic puzzle, with conventional wordplay, but there are one or two points of interest.

The first – and this seems to be a trademark – is that the four clues around the perimeter (1 across, 8 down, 9 down and 34 across) are thematically linked. The theme is also sometimes referenced elsewhere. Obviously getting these solutions is an enormous help in completing the grid. When I looked at 1 across I immediately suspected that “Tongue” might mean a language. I then saw an anagram for RIVIERA on 8 down and the starting word “Nice” gave the game away entirely. The four perimeter clues are thus: FRENCH BULLDOG, FRENCH RIVIERA, FRENCH CUISINE and FRENCH TEACHER; 33 down also refers to the French theme.

Other than that I see that there are more ‘hidden word’ type clues than one would normally see in a UK cryptic, such as the clue for NUCLEAR mentioned above. Another one is “Dog shampoo chihuaua drinks (5)” which is “pooch”, although I am not convinced by “drinks” as the indicator!

I also had to think about 14 across “Chart shows Portugal full of Irish (4)”; I thought it had to be PLAN but couldn’t parse the rest until I found out that lán is “full” in the Irish language, hence “full of Irish” with “P” for “Portugal”. I don’t think there are many references to Irish words in Crosaire, generally.

I’m no speed merchant when it comes to crosswords, but this one took me 10 minutes to solve. If you’re interested, the full solution with notes can be found here. Maybe I’ll try to get into the habit of solving this more frequently. That might provide a little compensation for the generally woeful Opinion pieces cluttering up the newspaper. Also, with retirement on my mind, I wonder if the Irish Times – or any other newspaper – is looking for any more setters?

P.S. Crosaire was the pseudonym taken by the original setter John Derek Crozier, as a play on his own name and on the Irish word for “crossroad”. The Irish word for “crossword” is crosfhocal.

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In-Tray

Posted in Biographical with tags , , on November 25, 2025 by telescoper

Yesterday I came across the old cartoon shown above and shared it on Bluesky. It seemed to cause some amusement so I thought I’d share it here too.

The in-tray reminds me of when I (briefly) worked in industry during the 80s. There was a guy in our large open-plan office who had two trays on his desk, one with a sign marked “IN” and the other with a sign marked “OUT”. Things were delivered on Mondays to the in-trays and collected from out-trays at the end of the day on Fridays. This guy never touched the stuff in his in-tray but just before he left work on Fridays he would swap the signs on the two trays…

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A month to go

Posted in Artificial Intelligence, Biographical, Education, mathematics, Maynooth with tags , , , , , on November 25, 2025 by telescoper

I’ve been a bit preoccupied these recent weeks so it was with a shock that I realised that we’re into Week 9, which means just four weeks (including this one) until the end of term and just a month before Christmas. Teaching finishes here in Maynooth on Friday 19th December, but I don’t have any lectures on Fridays so in my case it will finish the day before (with a tutorial). I don’t know how many students will be there, but the module concerned is my 4th year Mathematical Physics module and the students are very hard-working, so I think most will attend. After such a busy term I’m sure that they will need a break as much as I will.

I had to rejig the schedule for both modules I am teaching this semester to accommodate the introduction of in-class tests to replace take-home assignments (for reasons I outlined here). I’ve also been handing out voluntary exercises for practice, not counting towards the module mark but for formative reasons. Both modules are mathematical in nature, and I think the best way to learn mathematics is by doing it…

Despite the changes with respect to last year, I am still roughly on track. In my Engineering Mathematics module I’ve just finished Laplace transforms, and will start Fourier methods tomorrow. With the mathematical physicists, I am in the middle of complex analysis, having done complex differentiation and conformal mappings and starting complex integration next week.

I still have a couple more class tests to get through. On the positive side, the students are turning up for them and have expressed approval for the fact that they don’t have compulsory homework to do off-campus. This form of assessment is undoubtedly harder work for the students, it’s also better preparation for the examination that take-home assignments.

We’ve just received the draft examination timetable for January, and I’m pleased that both of the examinations for which I am responsible will take place quite early in the examination period (on 12th and 15th January, respectively) so I should be able to get them corrected in time to have a break for some research before teaching resumes at the start of February.

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For the Birds

Posted in Biographical, Maynooth with tags , , , , , , , on November 23, 2025 by telescoper

The weather here in Maynooth was very mild until a couple of weeks ago and with the arrival of inclement conditions I started putting out the bird feeders in my garden. I can see the level of the seed from my kitchen window so know when they need filling up. I had one out for a couple of days before the arrival of Storm Claudia with associated torrential rain, but when it passed I was surprised to see the feeders were still half full so I left them.

Last weekend it started to become very cold so I was surprised there were no birds at the feeder. When I went out to look I realized that owing the heavy rainfall some water had got into the seed container, with the result that some of the seeds had started to germinate. This formed a tangled mass of shoots that blocked the gap through which seed is dispensed. The reason the feeders were not empty was not that the birds weren’t hungry, but that no seed was coming out.

I took the feeders inside and cleaned out all the matted seedlings. Then I took them back to the shed to fill up, at which point I knocked over the jar in which I stored the birdseed, scattering the supply all over the floor. There wasn’t much left anyway, but my clumsiness reduced the stock to zero so I was unable to feed the birds despite having functioning feeders.

Yesterday I finally had time to buy some more birdseed. I filled up the feeders as soon as I got home. It was quite interesting to watch the sequence of events. The first to arrive were sparrows who, being small and agile, were quite happy taking terms perching at the feeders. Not long after, however, starlings arrived, squabbling and squawking as they usually do. Starlings are much larger then sparrows and are extremely messy and noisy eaters, their attempts to perch at a feeder causing it to swing and scatter seed all over the ground.

(Incidentally, the term for a large group of starlings is a murmuration, a congregation, a cloud, or a constellation, but there are alternatives for a smaller group like the dozen or so that arrived in my garden. These include a clutter, a scourge, a vulgarity and, my favourite, a filth…)

Some starlings and sparrows started to feed on the ground, as did a very bonny collared dove, walking around calmly amid the flurry of other birds and paying them no attention at all .

At this point the feeder was almost empty.

The last cohort to arrive were the rooks and jackdaws. These are too big to even attempt to perch so their modus operandi is to crash into the feeders to try to break them or knock them down to the ground where they are easier to attack. They didn’t succeed, so they left.

Now the feeders are empty, the birds have gone, and all is quiet. I think I’ll put more food out tomorrow before I go to work. I imagine they’ll be empty by the time I get back home.

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Trouble at Astronomy Ireland

Posted in Biographical, The Universe and Stuff with tags , , on November 5, 2025 by telescoper

I couldn’t resist passing on an unsettling news item about Astronomy Ireland, an Irish Astronomy Club described on its website in the following terms:

Astronomy Ireland is a non profit organisation and the largest national astronomy club in the world relative to population.

The news item concerned revolves around founder and chairperson David Moore (left), who has been held personally liable for multiple employment rights breaches against a former manager, Sonya Martin, at Astronomy Ireland who said she was forced to quit due to a “toxic” work environment and alleged “serious financial irregularities”.

The astronomy club and four members of its management committee, including David Moore, have been ordered to pay nearly €11,000 to the ex-employee, Sonya Martin, after she complained of constructive dismissal to the Workplace Relations Commission (WRC).

Among the allegations reported were that Mr Moore was keeping funds meant for Astronomy Ireland:

David was taking the money and pocketing it as his own income, as opposed to it going back into the society,” Ms Martin said. “The attitude changed towards myself and Ms Doyle after that,” Ms Martin said.

No doubt the money was just “resting in his account”. I mentioned this story to colleagues in the Department and none was surprised, and many (unlike myself) had known about this case for some time. I’ll keep some of the comments to myself, but one said that they gave a lecture (for free, as we academics usually do) to Astronomy Ireland which was filmed without consent. David Moore then sold DVDs of the talk. Where the profits from this went, I have no idea.

These financial shenanigans are dodgy enough but there are some truly bizarre sections of the news report. Here is one:

As the hearings continued into 2025, Mr Moore made repeated objections to being attached personally to the claim, and told Mr Dolan he had not received hearing notifications.

“Emails are unreliable,” he said. When Ms Martin’s solicitor, Mr O’Connell said the notification was sent by post too, Mr Moore said: “The post is unreliable.”

Even stranger, if not directly relevant to the case of Mr Moore, is this:

During the June 2024 hearing, Ms Martin gave evidence that Astronomy Ireland’s office landlord approached her complaining about having to clean up after the junior administrator, Mr G, who was later dismissed.

“The final straw for the landlord was that he had to clean ejaculate from the bathroom after Mr G was in there,” Ms Martin added.

Ewww…

In the interest of full disclosure, I gave a talk to Astronomy Ireland in December 2019. I don’t remember if it was filmed nor whether DVDs were sold, but given what I know now I don’t think I’ll be accepting any more speaking invitations from that organisation.

Update: it seems DVDs of my talk were made and were on sale but are no longer available. They must have sold out.

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Oíche Shamhna shona daoibh go léir!

Posted in Biographical with tags , on October 31, 2025 by telescoper

So we have arrived at October 31st, Hallowe’en or, in pagan terms, Samhain. This, a cross-quarter day – roughly halfway between the Autumnal Equinox and the Winter Solstice – represents the start of winter (“the dark half of the year“) in the Celtic calendar. Technically, Samhain is tomorrow, 1st November, but the Celtic practice of reckoning days from sunset to sunset makes this a moot point.

Samhain is pronounced something like “sowin”, with the “sow” as in a female pig. The h after the m denotes lenition of the consonant (which in older forms of Irish would have been denoted by a dot on top of the m) so, when followed by a broad vowel the m is pronounced like the English “w”; when followed by a slender vowel or none “mh” is pronounced “v” or in other words like the German “w” (which makes it easier to remember). The phrase Oíche Shamhna (the Eve of Samhain) is used for Hallowe’en; it contains the genitive form of Samhain.

Unfortunately I’m still struggling a bit with the after-effects of yesterday’s jab so have neither the time nor the energy for a long post today so instead, before I go for another nap, I’ll just share a a replica (from the National Museum) of an authentically carved turnip as was traditional in old times. I think it’s infinitely scarier than any of those namby-pamby pumpkins.

This one is even scarier!

Oíche Shamhna shona daoibh go léir!

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Fifth Covid Booster

Posted in Biographical, Covid-19 with tags , , on October 30, 2025 by telescoper

Just for the record, today I had my 5th Covid-19 vaccination booster. As an Old, I get prompted by the HSE to get free Covid-19 boosters and winter ‘flu jabs so I booked an appointment at a local pharmacist as I did last year. In fact I went into work this morning to say farewell to newly-doctored Aoibhinn Gallagher, and walked to the pharmacy afterwards. I didn’t have to wait long and the vaccination itself only took a matter of minutes.

That makes seven Covid-19 jabs altogether for me: the initial vaccination was in two stages, and I have since had five boosters. All but one of these have been Pfizer; the other was Moderna.

On previous occasions of this type I’ve usually managed to arrange an afternoon free afterwards in case of any adverse reactions. That was easy this time because it is Study Week at Maynooth University so there are no lectures. I did feel a bit tired after the jab, and had a short nap this afternoon. I also seem to have developed a runny nose, which may or may not be a reaction to the injection, but I don’t think it’s very serious.

Update: 24 hours on, I’m still feeling the after-effects. Hopefully, I’ll be better by the weekend.

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After Conferring

Posted in Biographical, Maynooth with tags , , on October 30, 2025 by telescoper
from left to right: Dr Neil Trappe (HoD, Physics); Dr John Regan; Dr Aoibhinn Gallagher; Dr Matthew Birney; Dr Hannah O’Brennan; me; Dr Jonivar Skullerud

Yesterday I attended a conferring ceremony at Maynooth which was a very special occasion because it involved the formal award of the PhD degree to Aoibhinn Gallagher whom I supervised. Two other research students from the Department of Physics got their PhDs yesterday too; Matthew Birney and Hannah O’Brennan. Matthew (ESO Garching) and Aoibhinn (Bielefeld) both now have postdoctoral positions in Germany, incidentally.

These events are not actually called Graduation Ceremonies here in Ireland but Conferring Ceremonies. I was impressed that the local suppliers of academic dress, Phelan Conan were able to supply the correct 1989 vintage DPhil gown from Sussex University as opposed to the less interesting modern one. I would have worn it for the picture above, but by the time we found Hannah to take the photo I had already returned it to the supplier. Here are two more with myself in the gown and mortarboard:

left to right: Dr Emma Whelan; Dr Matthew Birney; Dr Aoibhinn Gallagher; me
Myself and Aoibhinn

You can see a picture of me wearing the same sort of gown in Brighton back in 1989, when I was a skinny young queen, here. I’ll add more pictures from yesterday if and when I get them.

As well as the PhDs we also saw the entire class of our MSc in Theoretical Physics and Mathematics get their degrees. I haven’t got any photographs of them, but will add any that I find. Here is a photograph of them outside the TSI building, courtesy of Jonivar Skullerud.

After the ceremony, those who got their degrees went for dinner with their respective parents, siblings and others who had come to attend the ceremony. We did meet up later on, however, in a local pub for a drink or several. In among all that I didn’t have time to write a post, bringing to an end a blogging streak of 109 days.

Graduation ceremonies are funny things. With all their costumes and weird traditions, they even seem a bit absurd. On the other hand, even in these modern times, we live with all kinds of rituals and I don’t see why we shouldn’t celebrate academic achievement in this way.

I like graduation ceremonies, actually. As each person walks across to be presented with their scroll you realize that every one of them has a unique story to tell and a whole universe of possibilities in front of them. How their lives will unfold no-one can tell, but it’s a privilege to be there for one important milestone on their journey, even those from other departments with whom you have had no contact at all.

I always find these ceremonies bittersweet occasions, though. There’s joy and celebration, of course, but these are tempered by the realization that many of the young people whom you’ve seen around long enough to grow accustomed to their faces, will disappear into the big wide world, in some cases never to be seen again. Although everyone is rightly proud of the achievement – either their own in the case of the graduands or that of others in the case of the guests – there’s also a bit of sadness to go with the goodbyes. It always seems that as a lecturer you are only just getting to know students by the time they graduate, but that’s enough to miss them when they go.

Anyway, all this is a roundabout way of saying congratulations once more to everyone who graduated yesterday, including Matthew, Hannah and Aoibhinn, and I wish you all the very best for the future!

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It’s That Time Again

Posted in Biographical, Maynooth with tags , , , , on October 26, 2025 by telescoper
Photo by Ola Dapo on Pexels.com

It’s Sunday 26th October 2025 and in the early hours of this morning the clocks went back, bidding goodbye to Summer Time. You can tell I’m an oldie because I have quite a lot of time-keeping devices around the house that need to be set by hand. My computer updates itself, of course, but I’m not sure if WordPress does. I’ll find out when I publish this post!

I’ve written before about the silly business of moving the clocks backwards and forwards (e.g. here) so I won’t repeat it all again. I will mention, however, that some time ago, before the Covid-19 Pandemic, the European Parliament approved a directive that would abolish `Daylight Saving Time’.  Unfortunately that plan was ‘paused’ although Spain is apparently going to try to get it going again.  I’ve long felt that the annual ritual of putting the clocks forward in the Spring and back again in the Autumn was a waste of time effort, so I’ll be glad if and when this silly practice is terminated. It would be far better in my view to stick with a single Mean Time throughout the year. I’m disappointed that this hasn’t already happened.

Anyway, talking of time, we have now completed five weeks of teaching in Semester 1 at Maynooth University. Tomorrow (Monday 27th October) is the October Bank Holiday and next week is Study Week so there are no lectures or tutorials. We do, however, have conferring (graduation) ceremonies including one that involves my recently-completed PhD student. Looking at my diary I notice also that I also have an appointment for my flu jab and Covid-19 booster, another sign that I’m an old codger.

Normally Study Break comes halfway through the 12-week teaching term but this year it splits 5-7. It did so last year too, actually. I am not unhappy to have an earlier break as I’m very tired, but I am conscious that this is going to make for a longer run-in to the Christmas holiday. We are supposed to teach up until Friday 19th December, but I don’t have any lectures on that day.

I’m not sure how much studying the students do during Study Week, but it’s not a holiday for academic staff even though there is no undergraduate teaching. Among other things we have examinations to write for the January examination period, which must be checked and printed well in advance. The deadline for these is November 3rd, so I have all week but I am planning to spend next weekend elsewhere so I need to get them done beforehand.

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The Passage of Time

Posted in Biographical, Education with tags , , , , , on October 20, 2025 by telescoper

The start of this term has been so busy that I forgot that October 1st was the 40th anniversary of the day I officially started as a research student at the University of Sussex (1st October 1985). Reflecting on that event I realized with something approaching horror that 1985 is halfway between 1945 and 2025, so I started my PhD DPhil closer in time to the end of World War 2 than to today. Yikes!

Before travelling to the Sussex to embark on my research degree, I spent a couple of weeks at a summer school for all the new Astronomy PhD students. These are still held annually, although they are now just a week long instead of a fortnight. They are now sponsored by the Science and Technology Facilities Council (STFC) but the one I attended was before that came into being, and even before its predecessor, the Particle Physics and Astronomy Research PPARC. The Science and Engineering Research Council (SERC)  summer school I went to was held at Durham University; we all stayed in St Mary’s College, just over the road from the Physics Department. I remember it well and indeed still have the notes I took during the lectures there.

Another difference in those days was that we got our stipends paid by cheque – every three months, if I remember correctly – directly from the Research Council. Nowadays STFC gives block grants to universities and other research institutions, who then pay the students.

Anyway, here is the summer school conference picture:

Unfortunately (for such a rare and valuable document) it is slightly damaged on the left -hand side. I leave it up to my readers to identify the people in this group who are still in the business 40 years later. I can see quite a few – Moira Jardine, Alan Fitzsimmons, Melvyn Hoare, Jon Loveday and Alastair Edge, among others! A more complete list can be found here.

I don’t think I’m the only member of this group who is thinking of retiring fairly soon. This post was occasioned by the 40th anniversary of the start of my DPhil; my plan is to retire 40 years after the date of the completion of my thesis. That’s less than three years from now…

"What we call the beginning is often the end
And to make an end is to make a beginning.
The end is where we start from. "

from Little Gidding V, Four Quartets by T.S. Eliot

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