Archive for the Maynooth Category

Naomh Pádraig – Séamus Murphy

Posted in Art, Maynooth with tags , , , on March 23, 2026 by telescoper

I’ve walked past this imposing head of St Patrick countless times since I arrived in Maynooth, seven and a half years ago, but it was only last week that I found out a bit about it.

The statue is called Naomh Patrick (Saint Patrick) and it was created by Irish sculptor Séamus Murphy. It is on public view in St Patrick’s House, Maynooth, just inside the main entrance. It is made of polished limestone and was first unveiled in 1949. Here is an old newspaper article in which the photograph on the right shows the artist beside the sculpture…

(The picture on the left seems to show the artist, on the far left, dozing off during a speech…)

From the Study Break…

Posted in Biographical, Education, Maynooth, Poetry with tags , , , , , on March 22, 2026 by telescoper

So now after a half-term mid-semester study break, including one day of actual holiday, that was both pleasant and eventful it will soon be time to return to the fray, at least for 9 working days. A full week of lectures, labs and tutorials starts tomorrow but the following week end a day early, on Thursday 2nd April, because 3rd April is Good Friday. Campus is closed then, as it is on Easter Monday and there are no lectures for the rest of that week. I’ll miss a lecture on Good Friday. I’m sure the students will be distraught, but that’s the way of things.

Anyway, with the Eastertide coming in and yesterday being World Poetry Day I thought I’d share a couple of pictures (taken two days apart) of the Japanese cherry trree in my back garden along with this haiku on a theme by A.E. Housman:

Loveliest of trees?
Not yet, but soon there will be
Bloom along the bough...

The Vernal Equinox 2026

Posted in Biographical, Maynooth, The Universe and Stuff with tags , , , on March 20, 2026 by telescoper
Loughcrew Cairn: for a few days on and around the Vernal Equinox the rays of the rising Sun penetrate the passage and illuminate the back stone.

Just a quick note to mention that the Vernal Equinox (Spring Equinox) in the Northern hemisphere happens this afternoon, Friday 20th March 2026, at 14.46 UTC (which is 2.46 pm local time here in Ireland. Many people in the Northern hemisphere regard the Vernal Equinox as the first day of Spring, atlhough round these parts that is taken to be 1st February (Imbolg). Of course in the Southern hemisphere, this is the Autumnal Equinox.

The date of the Vernal Equinox is often given as 21st March, but in fact it has only been on 21st March twice this century so far (2003 and 2007); it was on 20th March in 2008, has been on 20th March every spring from then until now, and will be until 2044 (when it will be on March 19th). I’ll be retired by then.

Anyway, people sometimes ask me how one can define the `equinox’ so precisely when surely it just refers to a day on which day and night are of equal length, implying that it’s a day not a specific time? The answer is that the equinox is defined by a specific event, the event in question being when the plane defined by Earth’s equator passes through the centre of the Sun’s disk (or, if you prefer, when the centre of the Sun passes through the plane defined by Earth’s equator). Day and night are not necessarily exactly equal on the equinox, but they’re the closest they get. From now until the Autumnal Equinox, days in the Northern hemisphere will be longer than nights, and the days will continue get longer until the Summer Solstice on June 21st before beginning to shorten again.

Beard of Ireland 2026!

Posted in Beards, Biographical, Maynooth with tags , , on March 17, 2026 by telescoper

Just got back from the St Patrick’s parade in Maynooth to find that I won the Beard of Ireland poll!

Thanks to everyone who voted for me! I’m going to celebrate this evening with a traditional Irish dinner of bacon and cabbage, with a parsley sauce.

Lá Fhéile Pádraig sona daoibh go léir!

Posted in History, Literature, Maynooth with tags , , , , , on March 17, 2026 by telescoper

Well, it’s St Patrick’s Day, which means I’m on holiday. I’ll soon be toddling off to watch the parade in Maynooth, which passes quite close to my house. In accord with tradition, it’s very cold today – and not a little windy – but at least it’s not raining.

Not many facts are known about the life of St Patrick, but it seems he was born in Britain, probably in the late 4th Century AD, probably somewhere around the Severn Estuary and possibly in Wales. It also appears that he didn’t know any Latin. When a young man, it seems he was captured by Celtic marauders coming up the River Severn and taken as a slave to Ireland. He eventually escaped back to Britain, but returned to Ireland as a missionary and succeeded somehow in converting the Irish people to Christianity.

Or did he? This interesting piece suggests his role was of lesser importance than many think. On the other hand, if even a fraction of what is said about him is true, then he must have been a very remarkable man.

However it happened, Ireland was the first country to be converted to Christianity that had never been part of the Roman Empire. That made a big difference to the form of the early Irish Church. The local Celtic culture was very loose and decentralized. There were no cities, large buildings, roads or other infrastructure. Life revolved around small settlements and farms. When wars were fought they were generally over livestock or grazing land. The church that grew in this environment was quite different from that of continental Europe. It was not centralized, revolved around small churches and monasteries, and lacked the hierarchical structure of the Roman Church. Despite these differences, Ireland was well connected with the rest of the Christian world.

Irish monks – and the wonderful illuminated manuscripts they created – spread across the continent, starting with Scotland and Britain. Thanks to the attentions of the Vikings few of these works survive but the wonderful Lindisfarne Gospels, dating from somewhere in the 8th Century were almost certainly created by Irish monks. The Book of Kells was probably created in Scotland by Irish Monks.

The traffic wasn’t entirely one-way however. A while ago I saw a fascinating documentary about the Fadden More Psalter. This is a leather-bound book of Psalms found in a peat bog in 2006, which is of similar age to the Lindisfarne Gospels. It took years of painstaking restoration work to recover at least part of the text (much of which was badly degraded), but the leather binding turned out to hold a particularly fascinating secret: it was lined with papyrus. The only other books from the same period with the same structure that are known are from the Coptic Church in Egypt. That doesn’t mean that whoever owned the Fadden More Psalter had actually been to Egypt, of course. It is much more this book made its way to Ireland via a sort of relay race. On the other hand, it does demonstrate that international connections were probably more extensive than you might have thought.

Anyway, back to St Patrick’s Day.

Saint Patrick’s Day is celebrated on March 17th, the reputed date of his death in 461 AD. Nobody really knows where St Patrick was born,, and the when of his birth isn’t known either.

In any case, it wasn’t until the 17th Century that Saint Patrick’s feast day was placed on the universal liturgical calendar in the Catholic Church. Indeed, St Patrick has never been formally canonized. In the thousand years that passed any memory of the actual date of his birth was probably lost, so the choice of date was probably influenced by other factors, specifically the proximity of the Spring Equinox (which is this year on Saturday March 20th).

The early Christian church in Ireland incorporated many pre-Christian traditions that survived until roughly the 12th century, including the ancient festival of Ēostre (or Ostara), the goddess of spring associated with the spring equinox after whom Easter is named. During this festival, eggs were used a symbol of rebirth and the beginning of new life and a hare or rabbit was the symbol of the goddess and fertility. In turn the Celtic people of Ireland probably adapted their own beliefs to absorb much older influences dating back to the stone age. St Patrick’s Day and Easter therefore probably both have their roots in prehistoric traditions around the Spring Equinox, although the direct connection has long been lost.

Lá Fhéile Pádraig sona daoibh go léir!

The Bridge and the Beard of St Patrick

Posted in Barcelona, Beards, Biographical, Maynooth with tags , , on March 16, 2026 by telescoper

One of the things I learnt during my sabbatical in Barcelona a couple of years ago is that un Puente (a Bridge) is a term used to describe a day in between a weekend and a public holiday. In Spain, it is quite normal to take such a day off work so as to create a long weekend. A sequence of such days is called un Aqueducte, the ideal version of which involves public holidays on Tuesday and Thursday leading to a whole week off!

Tomorrow being St Patrick’s Day (Tuesday 17th March), it is a public holiday in Ireland so I have decided to adopt Spanish practices and declared today La Puente de San Patricio. I am not going to campus (though I will be doing some work, including participating in a Euclid telecon). Officially this week is a Study Break, not a holiday (apart from tomorrow), but there are no lectures or labs or tutorials.

This reminds me to mention that I have made it to the final round of the annual St Patrick’s Day Beard of Ireland competition, which I actually won way back in 2020. The poll has been conducted mainly on Xitter in recent years, and I’ve hardly registered because I have had no presence there since 2023. This year, however, voting is possible via Bluesky (though I don’t think you have to be registered on Bluesky to vote). Last time I looked I was in the lead, but that’s by no means guaranteed to last. Here is a picture of me and my beard:

Anyway, if you feel like voting for me (or indeed any of the other candidates) you can do so here.

40 Years since Prof. Susan McKenna-Lawlor made Contact with a Comet – Guest Post by Emma Whelan

Posted in Maynooth, The Universe and Stuff with tags , , , , , , on March 13, 2026 by telescoper

Today (Friday 13th March 2026) is 40 years to the day since the Giotto spacecraft started to send back images of Halley’s comet;it reached its closest approach on 14th March 1986. This guest post by my colleague in the Department of Physics at Maynooth, Dr Emma Whelan, was written to mark this anniversary and the connection with the eminent Irish astrophysicist Susan McKenna-Lawlor.

–o–

This week, as I mull over the importance of International Women’s Day, I am also thinking about the significance to Irish women scientists of the 40th anniversary of the historic flyby of Halley’s Comet by the European Space Agency’s first deep space mission Giotto. On 14 March 1986, Giotto passed within about 600 km of the nucleus of Halley’s comet at a relative speed of roughly 68 km/s. Despite being bombarded by dust particles in the comet’s coma, the spacecraft successfully returned unprecedented data. Maynooth University space scientist and former Head of the Department of Experimental Physics, Prof. Susan McKenna-Lawlor, made a key contribution to this mission and was the Principal Investigator for Giotto’s instrument, the Energetic Particle Analyser otherwise known as EPONA. EPONA was designed to measure high-energy charged particles in the vicinity of Halley’s comet. By analysing the flux and energy of these particles, the experiment helped scientists understand the interaction between the solar wind and a comet.

Giotto represents not only a major milestone in the history of ESA, but also an important moment in the history of the contribution of Irish Women to the field of Astrophysics and the involvement of Maynooth University women scientists, in Space Science. The Department of Physics now has a thriving Physics with Astrophysics degree (MH204) with many women (students, technicians, administrators and academics) making important contributions to the success of this programme. Prof. McKenna-Lawlor’s leadership in developing and operating the instrument represented one of Ireland’s earliest direct contributions to an international space mission. Her work helped establish Ireland’s reputation in space science and encouraged future Irish participation in European and international space research, especially by young women who were inspired by seeing an Irish woman succeeding in a field where women were very rarely visible.

Launched in July 1985, Giotto’s primary objective was to encounter and study Halley’s Comet during its 1986 return to the inner Solar System. ESA have compiled a movie of its encounter which can be viewed here. At the time, Halley’s Comet was the most famous comet known, having been observed for centuries, yet very little was understood about comets and in particular the detailed structure of their nuclei and the physical processes occurring as they approach the Sun. Giotto provided the first close-up measurements of a comet and fundamentally changed scientific understanding of these Solar System bodies. One of Giotto’s most significant results was the first direct image of a comet’s nucleus. The images revealed that Halley’s nucleus is a dark, irregular object roughly 15 km long, far darker than expected, reflecting only a small fraction of sunlight. This confirmed the long-standing “dirty snowball” model proposed by astronomer Fred Whipple, in which a comet consists of volatile ices mixed with dust and rocky material. Giotto’s observations also showed jets of gas and dust erupting from localised regions on the nucleus, demonstrating that cometary activity is driven by sunlight heating specific surface areas rather than uniformly across the surface.

In addition to imaging, Giotto carried instruments designed to study the plasma, dust, and the energetic particle environment around the comet. These measurements revealed the complex interaction between the comet’s expanding atmosphere and the solar wind. Scientists were able to observe the formation of structures such as bow shocks and ion tails, helping to explain how cometary material becomes ionised and carried away through space. These results provided critical insights into the physics of cometary comae and their interaction with the heliosphere. The results from EPONA were crucial in identifying regions where energetic particles were produced by the interaction between the solar wind and the cometary plasma. These measurements contributed to the understanding of shock waves and particle acceleration processes occurring near the comet.

Prof. McKenna-Lawlor (pictured above, in 2017) was born in Dublin in 1935 and received a BSc, MSc and PhD from University College Dublin. She was a research assistant at The Dublin Institute for Advanced Studies and became a lecturer at the Department of Experimental Physics in Maynooth in the early 1970s. She has received numerous awards including the Russian Tsiokovsky Gold Medal for “Outstanding Contributions to Cosmonautics” in 1988. She has written several books on the history of Irish Astronomy including “Whatever Shines Should be Observed” that documents the pioneering contributions of five 19th-century Irish women to astronomy, photography, and science. The title is derived from the motto of the Royal Astronomical Society. In more recent times she was involved with ESA’s Rosetta mission which landed its Philae probe on comet 67P/Churyumov-Gerasimenko on November 12, 2014.

Hubble, Euclid and the Cat’s-Eye Nebula

Posted in Euclid, Maynooth, The Universe and Stuff with tags , , , , , on March 3, 2026 by telescoper

It’s been a while since I posted any Euclid-related news so I’m taking this opportunity to share a press-release related to this image:

ESA/Hubble & NASA, ESA Euclid/Euclid Consortium/NASA/Q1-2025, J.-C. Cuillandre & E. Bertin (CEA Paris-Saclay), Z. Tsvetanov

The Press Release follows:

–o–

For this ESA/Hubble Picture of the Month, Hubble  is joined by ESA’s Euclid to create a new view of the most visually intricate remnants of a dying star: the Cat’s Eye Nebula, also known as NGC 6543.

This extraordinary planetary nebula in the constellation Draco has captivated astronomers for decades with its elaborate and multilayered structure. Observations with ESA’s Gaia mission place the nebula at a distance of about 4300 light-years.

Planetary nebulae, so-called because of their round shape when viewed through early telescopes, are in fact expanding gas thrown off by stars in their final stages of evolution. It was the Cat’s Eye Nebula itself where this fact was first discovered in 1864 – examining the spectrum of its light reveals the emission from individual molecules that’s characteristic of a gas, distinguishing planetary nebulae from stars and galaxies. 

Here, the nebula is showcased through the combined eyes of the NASA/ESA Hubble Space Telescope and ESA’s Euclid, highlighting the remarkable complexity of stellar death.

Though primarily designed to map the distant Universe, Euclid captures the Cat’s Eye Nebula as part of its deep imaging surveys. In Euclid’s wide, near-infrared and visible light view, the arcs and filaments of the nebula’s bright central region are situated within a halo of colourful fragments of gas zooming away from the star.

This ring was ejected from the star at an earlier stage, before the main nebula at the centre formed. The whole nebula stands out against a backdrop teeming with distant galaxies, demonstrating how local astrophysical beauty and the farthest reaches of the cosmos can be seen together in modern astronomical surveys.

Within this broad view of the nebula and its surroundings, Hubble captures the very core of the billowing gas with high-resolution visible-light images, adding extra detail in the centre of this image. The data reveal a tapestry of concentric shells, jets of high-speed gas and dense knots sculpted by shock interactions, features that appear almost surreal in their intricacy. These structures are believed to record episodic mass loss from the dying star at the nebula’s centre, creating a kind of cosmic “fossil record” of its final evolutionary stages.

Combining the focused view of Hubble with Euclid’s deep field observations not only highlights the nebula’s exquisite structure but also places it within the broader context of the Universe that both space telescopes explore. Together, these missions provide a rich and complementary view of NGC 6543 – revealing the delicate interplay between stellar end-of-life processes and the vast surrounding space.

–o–

For more information, see here. There’s also this video which shows the Nebula in context in Euclid’s extraordinarily impressive wide field capability and Hubble’s superb resolution in the optical band:

P.S. I put the following on my office door in Maynooth University to demonstrate the true scale (!) of my own involvement in Euclid.

At least I’m on the first page!

Maynooth University Library Cat Update

Posted in Maynooth with tags , on February 27, 2026 by telescoper

It being a spring-like day, Maynooth University Library Cat took the opportunity to choose a spot away from his usual post so he could loaf in the sunshine.

Ash Wednesday Observance

Posted in Biographical, Maynooth with tags , , on February 19, 2026 by telescoper

Yesterday was Ash Wednesday. I remember this time eight years ago when I was very much a newcomer to Maynooth being quite surprised to see some folk wearing a cross marked in ash on their forehead as in the picture above. I think this practice is a tradition within the Roman Catholic Church, with which Maynooth has long historical associations, so it’s not really surprising to see it here. Having been brought up in Protestant England I had never seen this before moving to Ireland, but it doesn’t surprise me any more to see people with crosses on their foreheads. That said, I noticed very few around the place yesterday. The numbers observing this ritual seem to be declining every year. Perhaps if they want to increase its popularity they could zhuzh it up a bit: how about some glitter in the ash? Just a thought.

Apparently the tradition used to be for ashes to be sprinkled on the top of the head of a male worshipper but a cross to be made on the forehead of a woman because she would be expected to be wearing a hat. Based on a small sample of those I have observed it seems both genders wear the cross on the forehead nowadays.

Anyway, although I’m not a Christian myself, respect to all those observing the season of Lent (Quadragesima), whether that means fasting, devotional prayer, or just giving up luxuries, such as reading this blog perhaps.

P.S. I’m told that the normal rule for Lent is `One meal and two collations’. The word collation, in the sense of ‘light meal,’ comes from the title of John Cassian‘s early fifth-century work Collationes patrum in scetica eremo (Conferences with the Egyptian hermits), which was read in Benedictine communities before a light meal. I haven’t heard that English word for a while, but it has the same origin as the Italian colazione, used in prima colazione (breakfast).