Archive for the Cardiff Category

R.I.P. John Peter Rhys (“JPR”) Williams (1949-2024)

Posted in Biographical, Cardiff, R.I.P., Rugby with tags , , , , , , on January 9, 2024 by telescoper

A cold and miserable day in Cardiff yesterday got even sadder when news came out of the death of Welsh rugby legend John Peter Rhys Williams known universally as “JPR” after the winger John James Williams (another great player), joined the national team and became “JJ”. JPR was one of the superb players who dominated Welsh rugby in the 1970s; he stood out even in such exalted company. In my opinion JPR is was the greatest full-back ever.

JPR was instantly recognizable on the field: tall and craggy, with characteristic long hair, prominent sideburns, socks always rolled down around his ankles, he was an imposing figure whether patrolling the defensive lines or stepping up to join the attack. In the famous 1973 match in Cardiff between The Barbarians and New Zealand he was described by commentator Cliff Morgan as “a man who never shirks his responsibility”. Just watch the memorable opening try where you’ll see JPR in the thick of the action, twice shrugging off dangerous tackles around his neck, the second time receiving the ball from Phil Bennett to start the passing move from deep inside his own half.

Many people forget that the man himself scored a great try in that game too:

(Note the involvement of David Duckham in that move; he passed away just a year ago.)

As a full-back, JPR was often the last line of defence. Sometimes, tidying up after a kick from the opposition, he would clear his lines by kicking. More often, though, he would spot a weakness and go charging forward, ball in hand, not afraid to run straight at the opposition. He was quick to spot gaps in his own defence too, rushing to provide cover, often with last-ditch try-saving tackles.

As good as he was at turning defence into attack, he was even better when his side were already in control. Here are two tries he scored for Wales against England in 1976 that demonstrate his superb positional sense in attack as well as his sheer physical strength.

(Wales achieved a Grand Slam in 1976; England got the Wooden Spoon.)

JPR was a tough, aggressive and uncompromising man on the field – players certainly knew when he’d tackled them! – but a gentleman off it, and held in a very high regard throughout the rugby world and beyond. His loss is immeasurable. One by one the legends are leaving us. The world is poorer without them.

Rest in peace, J.P.R. Williams (1949-2024)

P.S. When living in Cardiff years ago I had the pleasure of meeting and talking with two Welsh rugby legends, Gerald Davies and Phil Bennett (the former at a function, the latter at a book-signing). Both were charmingly modest men. I never really met JPR properly but I remember vividly stepping out of my house in Pontcanna on a Six Nations match day and finding myself face-to-face with him in the street. He must have been around 60 then and was still the same imposing figure he was in the 1970s. I recognized him immediately. I wanted to say something and perhaps even shake his hand, but I was too star-struck.

P.P.S. JPR was a fully-qualified orthopaedic surgeon and a Fellow of the Royal College of Surgeons. This is a reminder that back in the 1970s, Rugby Union was still an amateur game.

Cold Cardiff

Posted in Biographical, Bute Park, Cardiff, Uncategorized on January 8, 2024 by telescoper

So here I am after a very busy day in a very cold Cardiff, about to have a pizza for dinner having accomplished quite a few of the things I’d planned, despite having to return to base for a couple of telecons: Euclid business has resumed in earnest after the break.

It has just started snowing.

Earlier today, my perambulations took me through Bute Park, where there was quite a lot of evidence of storm damage, including this:

Fallen tree by the River Taff.

The snow is now falling steadily.

Snow on The Friary, Cardiff

I hope it doesn’t go on too long as I have to get a train later in the week, and even a light dusting seems to bring the rail network to a standstill!

Among the Travellers

Posted in Biographical, Cardiff, Education, Maynooth with tags , , , , , , on January 7, 2024 by telescoper

With Nollaig na mBan yesterday that’s the festive season over for me, and time to resume my sabbatical. Joining the crowd of post-Christmas travellers at the airport, today I took my first flight of 2024, complete with last-minute change of gate, apart from which all went perfectly to plan. I won’t be returning to Barcelona immediately, however, as I have a things to do in various different parts of not-Barcelona.

I’m in Cardiff now, where it is fine and dry but very cold, and spending a few days in Cardiff to start with. After that I’ll be taking a train to London to attend a meeting at the Royal Astronomical Society, followed by dinner at the R.A.S Club on Friday 12th January.

Coincidentally, Friday’s dinner is rather appropriately at the Travellers Club, rather than the usual Athenaeum (which is unavailable for some reason). I couldn’t attend any of these occasions between October and December as I was in Barcelona, and for a couple of years. In fact I haven’t been able to attend much at all since the bicentennial dinner in 2020 because of the pandemic and subsequent workload issues. I’m not sure if I’ll be able to go to any others this year either, so I’m looking forward to Friday (despite having to pay the arrears on my subscription) because it is the Parish Dinner, when new members are elected. Owing to the arcane complexity of the rules, and the fact that it all happens after the consumption of a great deal of wine, this usually makes for an amusing occasion.

Meanwhile, in Maynooth, preceded by a few days of revision lectures and tutorials, the January examinations start on Friday 12th January too. Students will therefore be returning from their breaks, swapping the Christmas decorations for the austerity of the examination halls. Although I’m not involved in examinations this year, I’d like to take this opportunity to wish all students at Maynooth and elsewhere all the best for the forthcoming ordeals, and the same for all academic staff whose ordeal by marking will come in due course…

Flying visit to Cardiff

Posted in Biographical, Cardiff, Open Access with tags , , , , on November 1, 2023 by telescoper

I got up at 3am this morning to take a bus to an airport, then a flight to Bristol Airport, then another bus to Bristol Temple Meads, and then a train to Cardiff in order to give a seminar. Now I’m in the middle of the reverse process, having a pint in Bristol Airport.

In case you’re thinking of using Bristol Airport at any time in the next 8 weeks, then please bear in mind that there are major roadworks on the approach road, so be sure to allow extra time. It took over an hour from Bristol Temple Meads this evening, more than double the usual time, and it’s only 8 miles…

I’m more than a little tired after all that, but it was still very nice to meet up with friends and former colleagues again. I was particularly delighted to learn that Professor Haley Gomez has been appointed Head of the School of Physics and Astronomy. Congratulations to Haley!

I’ll upload the slides from my talk when I get back to base. For the time being, however, I’m just going to chill in the departure lounge before my return flight.

Update: the return leg ran to schedule so here, as promised, are the slides for the talk I was invited to give:

P.S. I’ll be giving two talks on the same theme later this month in different institutes in France.

Teaching in Base 60

Posted in Barcelona, Cardiff, History, mathematics, Maynooth with tags , , , , on October 27, 2023 by telescoper

Some time ago – was it really over a decade? – I wrote a piece about the optimum size of modules in physics teaching. I was still in the United Kingdom then so my ramblings were based on a framework in which undergraduate students would take 120 credits per year, usually divided into two semesters of 60 credits each. In Cardiff, for instance, most modules were (and still are) 10 credits but some core material was delivered in 20 credit modules. In the case of Sussex, to give a contrasting example, the standard “quantum” of teaching was the 15 credit module. I actually preferred the latter because that would allow the lecturer to go into greater depth, students would be only be studying four modules in a semester (instead of six if the curriculum consisted of 10 credit modules), and there would be fewer examinations. In short, the curriculum would be less “bitty”.

In Maynooth the size of modules is reckoned using the European Credit Transfer System (ECTS) which takes a full year of undergraduate teaching to be 60 credits rather than 120 in the UK, but the conversion between the two is a simple factor of two. In Maynooth the “standard” unit of teaching is 5 credits, with some 10 credit modules thrown in (usually extending over two semesters, e.g. projects). This is similar to the Cardiff system. The exception concerns first-year modules, which are 7.5 credits each because students take four modules in their first year so they have to be 30/4=7.5 credits each. The first year is therefore like the Sussex system. It changes to a five-credit quantum from Year 2 onwards because students do three subjects at that stage.

I find it interesting to compare this with the arrangements here in Barcelona (and elsewhere in Spain). Here the ECTS credit size is used, but the standard module is six credits, not five, and year-long projects here are 12 credits rather than 10. The effect of this is that students generally study five modules at a time (or four plus a project). To add to the fun there are also some 9 credit modules, so a semester could be made up of combinations of 6-credit and 9-credit chunks as long as the total adds up to 30.

Anyway, the main point of all this is to illustrate the joy of the sexagesimal system which derives from the fact that 60, being a superior composite number, has so many integer divisors: 2, 3, 4, 5, 6, 12, 15, 20, and 30. The Babylonians knew a thing or two!

LiteBIRD Update

Posted in Cardiff, The Universe and Stuff with tags , , , , , on October 12, 2023 by telescoper


It was more than four years ago that I passed on the news that the space mission LiteBIRD had been selected as the next major mission by the Japanese Space Agency JAXA and Institute for Space and Astronautical Science (ISAS).
LiteBIRD (which stands for `Lite (Light) satellite for the studies of B-mode polarization and Inflation from cosmic background Radiation Detection’) is a planned space observatory that aims to detect the footprint of the primordial gravitational waves on the cosmic microwave background (CMB) in a form of a B-mode polarization pattern. This is the signal that BICEP2 claimed to have detected nine years ago to muc excitement, but was later shown to be a caused by galactic dust.
At the time, I said that this was great news for a lot of CMB people all round the world that this mission had been selected – include some old friends from Cardiff University. Well, I’ve just seen a news item announcing a grant to Cardiff astrophysicists who will lead the UK involvement and develop the optical design.
The launch date has slipped into the 2030s (no doubt partly because of the pandemic) so I’ll be long retired before it happens, but the mission will last three years and will, like Euclid, be at Earth-Sun Lagrange point known as L2. It will be a very difficult task to extract the B-mode signal from foregrounds and instrumental artifacts but I wish LiteBIRD every success!

Two Views of the Ring Nebula

Posted in Cardiff, Maynooth, The Universe and Stuff with tags , , , , , , , , , on August 22, 2023 by telescoper

It’s very nice to have an opportunity, courtesy of JWST, to congratulate astronomers from my current institution (Maynooth, Ireland) and my previous one (Cardiff, UK) – as well as many others – or their involvement in stunning new observations of the Ring Nebula (aka M57 and NGC 6720), a planetary nebula. There is a full story on the Maynooth University website here detailing the involvement of Dr Patrick Kavanagh in the processing of the images and another on the Cardiff University website here about Dr Roger Wesson, who led the programme. Not surprisingly there has been a lot of news coverage about these wonderful images obtained with the NIRCam and MIRI instruments on JWST here in Ireland and in Wales and elsewhere.

A particular excuse for reproducing the pictures here is to try out the fancy “image comparison” tool on WordPress, which allows the reader – that’s you – to slide one picture over the other. Have a go!

This groovy visual shows two images side by side of the Ring Nebula. The image on the left shows the NIRCam view and the image on the right shows the MIRI image. The left image shows the planetary nebula as a distorted doughnut with a rainbow of colours with a blue/green inner cavity and clear filamentary structure in the inner region. The right image shows the nebula with a red/orange central cavity with a ring structure that transitions from colours of yellow to purple/blue. Picture credits ESA/Webb, NASA, CSA, M. Barlow, N. Cox, R. Wesson

The full paper describing these observations can be found on the arXiv here.

Back to Maynooth

Posted in Biographical, Cardiff, GAA, Maynooth with tags , , , on July 8, 2023 by telescoper

I made it back to Maynooth from Cardiff last night after a relatively uneventful journey, although sitting next to a hen party on a RyanAir flight en route to Dublin wasn’t exactly the most peaceful experience and I was quite tired when I got home.

Among the many things that have changed over the last few years is how much quieter Cardiff Airport is. When I arrived there at about 6pm yesterday there were only two flights on the departure screen. One of them (a KLM flight to Amsterdam) was then cancelled, so all the intending passengers had to leave the departure lounge and collect their checked luggage. My flight was on time, however, and was very full.

In a previous pre-pandemic existence I spent half my time in Cardiff and half in Maynooth so had to cross the Irish Sea twice a week. The airline I used in those days, FlyBe, went bust just before the pandemic. RyanAir has taken the Cardiff-Dublin route, deploying a Boeing which is much bigger than the Embraer used by FlyBe, but there is only one flight a day. The other routes previously operated by FlyBe from Cardiff (e.g. to Edinburgh) no longer exist. Bristol is relatively easy to get to from Cardiff so I suppose people go that way nowadays if they have to fly.

A consequence of the small number of flights from Cardiff Airport is that the shuttle bus to Cardiff City Centre no longer runs. That was the method I used to get to and from the airport in my previous existence when I had to cross the Irish Sea twice a week. That no longer being available, I travelled to the airport by train and bus transfer. It’s a lot less convenient than the old bus, and a bit more expensive, but went off without any hitches.

Anyway, it’s nice to be home. I plan to spend the day chilling and watching the hurling semi-final between Limerick and Galway. UPDATE: Defending Champions Limerick beat Galway by 2-24 to 1-18 and thus get to the final yet again. The other semi-final, between Clare and Kilkenny, is tomorrow.

P.S. I forgot to mention that the good folk of Cardiff gave me a mug advertising CHART – Cardiff Hub for Astrophysics Research and Technology – which is new since my day.

NAM Ending

Posted in Biographical, Cardiff on July 7, 2023 by telescoper

So here I am, getting ready to check out of my hotel and head off to the last day of the UK National Astronomy Meeting 2023.

I had to miss out on yesterday afternoon’s sessions to deal with some personal matters, all thankfully resolved, though that had the bonus of having to take a walk through Bute Park and get some lovely fresh air. I managed to sort out the things I needed to do, but it took longer than I thought it would for various reasons. Anyway, there is still the best part of a day to go, and my flight back to Dublin is not until this evening, so I’ll be attending most of the day’s session.

Since I did my talk on Wednesday I’ve been a free agent and while I have been at the meeting I have been moving from session. It’s been good to catch up with what’s going on across the field. I went to sessions on infrared astronomy and gravitational waves as well as a number on cosmology (including one on the UK contribution to Euclid).

I think the meeting has been excellent and I congratulate the organizers and all the contributors for putting on such a great programme. It’s great to see Cardiff at the forefront of so many great things going on UK Astronomy.

P.S. This may have been the biggest NAM ever..

NAM Plenarius

Posted in Biographical, Cardiff, Harassment Bullying etc with tags , , , on July 5, 2023 by telescoper
Picture by Renée Hložek

Today I contributed to a Plenary session at the UK National Astronomy Meeting in Cardiff, in the form of a a joint presentation by myself and the wonderful Dr Tana Joseph. It isn’t the first time that there’s been a talk about Equality Diversity and Inclusion at a NAM – there was one in 2017 – but it’s definitely the first one I have done. I wasn’t sure how it would go, but in the end I think it went pretty well.

The word “Plenary”, by the way, is derived from the Latin adjective plenarius (meaning complete) which is in turn derived from plenus (meaning full). I wasn’t sure ahead of the event how full the room would be, as I worried that some people wouldn’t attend this and might leave after the previous plenary talk. Some people did leave at the start, actually, but fortunately they were replaced by a a larger number of new arrivals.

There have been parallel sessions yesterday and the day before on EDI issues, but there’s a tendency for the people attending such sessions to those who are already engaged in related work, while it is important in my opinion for everyone to pay attention. That’s a point I tried to make during the session.

Tana and I agreed beforehand that we would try to stimulate a discussion and I did worry that we might not succeed in provoking questions, but in fact there were many. That, and the nice comments we got after the talk, convinced me that the session had gone well. I was, however, quite nervous as I haven’t given any kind of conference talk for some years now.

One problem was that a meeting of RAS Council was timetabled in such a way as to clash with this morning’s Plenary, so nobody on Council could attend. That was regrettable.

Anyway, that job done, I’m now back at my hotel getting myself ready for the conference dinner. That reminds me that last night I attended the out-of-town dinner of the RAS Club which is usually held at National Astronomy Meetings. This time it was at the Ivy Restaurant in Cardiff. I took my chequebook to pay for the dinner (which is practically the only thing I pay for by cheque) only to discover that they now accept card payments. Looking at the stubs, though, I realized that the last Club Dinner I attended at the Athenaeum in London was on 14th February 2020. The dinner after that was cancelled due to the pandemic, and I haven’t been able to attend any since then.

Update: dinner (in the Principality Stadium) was really excellent, and congratulations to all the award winners. And so to bed.