Open Access Updates & Announcements

Posted in Open Access with tags , , , on August 3, 2024 by telescoper

When I wrote last week’s update on papers published at the Open Journal of Astrophysics, I was a little surprised that our publishing activity had not tailed off because of the summer vacations. Well, it has now because we haven’t publish any papers this week! Rather than not post an update at all, however, I thought I’d point out a few interesting things that have happened in the world of open access.

First. I draw your attention to an article in C&EN (Chemical & Engineering News) reflecting on the fact that the Gates Foundation (one of the largest research charities in the world) announced in March 2024 that, starting from Jan. 1, 2025, it would no longer cover publishing costs. I actually wrote about this decision here. The article is largely about the threat this poses to the Gold Open Access model, which in my opinion thoroughly deserves to be threatened. It does, however, talk briefly about Diamond Open Access which commercial publishers don’t like as it removes – or should do – their source of profits:

Another alternative model is diamond OA, in which all research papers and their associated peer-reviewed reports are published without fees for the author or the reader and are also freely available to read and reuse. 

It goes on to say:

Under diamond OA, publishers are no longer gatekeepers of research. Instead, they become service providers that handle manuscript submissions, typesetting, and copyediting. This is in contrast to the current publishing system, in which the publisher controls everything from the copyright to the production process.

I don’t really agree with even the limited role of “service providers” mentioned here, as much of what that role entails just involves a decent reviewing platform. Elsewhere the article says that moving to Diamond OA would entail a significant cost. That may be but, as I’ve said over and over again, the actual cost of online publishing is low compared to the level of profit extracted by commercial publishers. The cost to academia of moving to Diamond OA would be much less than not moving to Diamond OA.

The second item I’d like to draw your attention is called Choosing a publisher? It’s not all about the impact factor and is by Antigoni Messaritaki, a senior publisher at IOP Publishing,  When I saw the title I thought that it might be about the uselessness of Journal Impact Factors and a commitment by IOP Publishing to stop using them. Sadly it’s nothing of the sort. It tries to entice authors to look beyond journal impact factors when choosing a publisher, pushing Open Access as an important factor to consider. It admits that APCs are expensive, but never even mentions Diamond OA. It’s an entirely self-serving piece. I find the IOP’s stance on publishing, and the disingenuous way they try to excuse their own profiteering, unethical and unacceptable. That’s why I resigned my fellowship of the IOP.

Last, and by all means least, I should draw your attention that the 32nd General Assembly of the International Astronomical Union takes place next week in Cape Town. I’m not attending in person – I’ve done enough travelling this year! – but I have accepted an invitation to give a remote talk at a side event called Open Access Encounters on Wednesday 7th August:

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Swan Back

Posted in Biographical, Maynooth with tags , , on August 2, 2024 by telescoper

As we enter a Bank Holiday long weekend here in Maynooth I thought I’d pass on a bit of news and a clarification about the swan(s). Some time ago I described the sad events that led to the death of one of the pair of swans that had nested on the Royal Canal for many years, along with all their cygnets. In that post I explained that one of the swans had died and the other had been taken away by the  Kildare Wildlife Rescue (KWR) team. All I know is that both seemed to have been suffering from some sort of be “infection” which may or may not be the same thing that cause of death as the cygnets.

At the time I had been told that it was the female swan (the pen) that had died and the male that had been taken away to be treated. It turns out that this was the wrong way round: it was the male swan that had died and the female (the cob) that had been removed by Kildare Wildlife Rescue.

The good news, however, is that she has recovered and has now been returned to the Canal:

Picture Credit: Caroline Connolly of Kildare Wildlife Rescue

Of course she’s on her own now, having lost her partner and all her cygnets. I don’t know if she’ll find another and start breeding again. I do hope so. A lone juvenile male has been spotted on the canal recently. Might they get together?

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Euclid Galaxy Zoo

Posted in Euclid, The Universe and Stuff with tags , , , , , , on August 1, 2024 by telescoper

Today sees the launch of a new initiative between Galaxy Zoo (part of the Zooniverse conglomerate) and the Euclid Consortium which I am delighted to be able to promote on this blog. What follows the graphic is the text of the announcement which is being promoted across social media today. I’ll start with a little factoid which might surprise you: already in November 2023, before science operations even began, Euclid had sent back to Earth more data than the Hubble Space Telescope has done in in its entire lifetime.

Thanks to a new Galaxy Zoo project launched today, you can help identify the shapes of thousands of galaxies in images taken by ESA’s Euclid space telescope. These classifications will help scientists answer questions about how the shapes of galaxies have changed over time, and what caused these changes and why. 

In its mission to map out the Universe, Euclid will image hundreds of thousands of distant galaxies. In November 2023 and May 2024, the world got its first glimpse at the quality of Euclid’s images, which included a variety of sources, from nearby nebulas to distant clusters of galaxies. In the background of each of these images are hundreds of thousands of distant galaxies. 

This square astronomical image shows thousands of galaxies across the black expanse of space. The closest thousand or so galaxies belong to the Perseus Cluster.

For the next six years, the spacecraft is expected to send around 100 GB of data back to Earth every day. That’s a lot of data, and labelling that through human effort alone is incredibly difficult.  

That’s why ESA and Euclid consortium scientists have partnered with Galaxy Zoo. This is a citizen science project on the Zooniverse platform, where members of the public can help classify the shapes of galaxies.  

Euclid will release its first catalogues of data to the scientific community starting in 2025, but in the meantime any volunteer on the Galaxy Zoo project can have a glimpse at previously unseen images from the telescope. 

You could be the first person to lay eyes on a galaxy 

The first set of data, which contains tens of thousands of galaxies selected from more than 800 000 images, has been made available on the platform, and is waiting for you to help classify them. 

If you partake in the project, you could be the first to lay eyes on Euclid’s latest images. Not only that, you could also be the first human ever to see the galaxy in the image.  

The Galaxy Zoo project was first launched in 2007, and asked members of the public to help classify the shapes of a million galaxies from images taken by the Sloan Digital Sky Survey. In the past 17 years, Galaxy Zoo has remained operational, with more than 400 000 people classifying the shapes of galaxies from other projects and telescopes, including the the NASA/ESA Hubble Space Telescope and the NASA/ESA/CSA James Webb Space Telescope.  

Humans and AI working together 

These classifications are not only useful for their immediate scientific potential, but also as a training set for Artificial Intelligence (AI) algorithms. Without being taught what to look for by humans, AI algorithms struggle to classify galaxies. But together, humans and AI can accurately classify limitless numbers of galaxies. 

At Zooniverse, the team has developed an AI algorithm called ZooBot, which will sift through the Euclid images first and label the ‘easier ones’ of which a lot of examples already exist in previous galaxy surveys. When ZooBot is not confident on the classification of a galaxy, perhaps due to complex or faint structures, it will show it to users on Galaxy Zoo to get their human classifications, which will then help ZooBot to learn more.  

On the platform, volunteers will be presented with images of galaxies and will then be asked several questions, such as “Is the galaxy round?”, or “Are there signs of spiral arms?”. 

After being trained on these human classifications, ZooBot will be integrated in the Euclid catalogues to provide detailed classifications for hundreds of millions of galaxies, making it the largest scientific catalogue to date, and enabling groundbreaking new science.  

This project makes use of the ESA Datalabs digital platform to generate a large number of cutouts of galaxies imaged by Euclid. 

Thanks to a new Galaxy Zoo project launched today, you can help identify the shapes of thousands of galaxies in images taken by ESA’s Euclid space telescope. These classifications will help scientists answer questions about how the shapes of galaxies have changed over time, and what caused these changes and why. 

The first set of data, which contains tens of thousands of galaxies selected from more than 800 000 images, has been made available on the platform, and is waiting for you to help classify them.  

Examples of Euclid galaxies to classify are shown in this image.  

Euclid Galaxy Zoo galaxies to classify. Forty galaxies are shown against a black background. The galaxies are all different in shape, some look like spirals, some look barred, or smooth. Image credit: ESA/Euclid/Euclid Consortium/NASA, CC BY-SA 3.0 IGO or ESA Standard Licence 

About Euclid 

Euclid was launched in July 2023 and started its routine science observations on 14 February 2024. The goal of the mission is to reveal the hidden influence of dark matter and dark energy on the visible Universe. Over a period of six years, Euclid will observe the shapes, distances and motions of billions of galaxies out to 10 billion light-years.  

Euclid is a European mission, built and operated by ESA, with contributions from NASA. The Euclid Consortium – consisting of more than 2000 scientists from 300 institutes in 15 European countries, the USA, Canada and Japan – is responsible for providing the scientific instruments and scientific data analysis. ESA selected Thales Alenia Space as prime contractor for the construction of the satellite and its service module, with Airbus Defence and Space chosen to develop the payload module, including the telescope. NASA provided the detectors of the Near-Infrared Spectrometer and Photometer, NISP. Euclid is a medium-class mission in ESA’s Cosmic Vision Programme. 

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Taighde Éireann

Posted in Maynooth, Open Access, Science Politics with tags , , , , , , , , , , on July 31, 2024 by telescoper

On 1st August 2024, i.e. tomorrow, a new funding organization comes into existence in Ireland, formed by the merger of SFI with the Irish Research Council. The new outfit is called Taighde Éireann – Research Ireland and many of us working in Irish academia were optimistic that it might improve the funding environment in Ireland, especially with regard to basic research.

Taighde Éireann has not got off to a very promising start. In particular, the long-running saga of who would be Chief Executive Officer of the new organization does not inspire confidence. Professor Philip Nolan, former Director-General of Science Foundation Ireland was originally intended to take the helm, but then he was dismissed from his position at SFI which made the prospect of him taking over the new organization seem less likely. Indeed, more recently, it was announced that a new temporary CEO would be appointed “pending the recruitment of a new CEO on a permanent basis”.

Starting with a caretaker manager is far from ideal, although it probably just means that the interim CEO will just look after transferring activity from IRC and SFI to the new organization without actually changing much. I just hope that in the long run a person is appointed who actually understands research rather than a generic management type. Otherwise the only change that will actually happen will be purely administrative rather than the systemic overhaul of attitudes and culture that Ireland really needs. As an outsider, one way of reading the controversy of the CEO the current SFI establishment resisting any possibility of change.

From my own perspective, the fundamental problem is that research funding for fundamental science in Ireland is so limited as to be virtually non-existent by a matter of policy at Science Foundation Ireland, which basically only funds applied research. This is a short-sighted and damaging policy that is causing, among other things, a significant exodus of talented young researchers to opportunities elsewhere (especially in the EU).

I know there will be many competing calls for changes in practice for the new Council but I thought I would add a few suggestions that will probably be ignored but which I’ll make anyway.

  1. A funding stream should be set up to enable scientific exploitation of Ireland’s current memberships of the European Southern Observatory (ESO), European Space Agency (ESA) and future membership of CERN. Ireland’s membership of ESO provides a cautionary tale. The Irish astronomical community was very happy about the decision to join ESO, but that decision was not accompanied by significant funding to exploit the telescopes. Few astronomers have therefore been able to benefit from ESO membership. While there are other benefits of course, the return to science has been extremely limited. The phrase “to spoil a ship for a ha’porth of tar” springs to mind. Even a few PDRA and PhD positions would provide an enormous boost.
  2. There should be far less emphasis on top-down funding ventures, such as the research “Centres”. These lock up a huge amount of money which makes it much more difficult to provide support to exciting curiosity-driven research, which is often where real innovation occurs. Let’s have much more responsive-modem grants, including areas of basic research currently excluded by SFI policy. This could be done by simply expanding the remit of the SFI Frontiers programme.
  3. The current IRC Laureate programme is inadequate. This currently has one call every four years. It should be annual, even if fewer positions are funded in each round, to allow it to be more responsive.
  4. Ban the use of any funds from the new organization being wasted on Gold Open Access, but invest in Diamond Open Access activities across all disciplines (i.e. Arts and Humanities as well as Science).
  5. Work with Government to provide a much more coherent system of funding research infrastructure, including if necessary requiring HEIs to commit a share of their surpluses to capital projects. In the UK, for example, capital projects funded by research councils usually require 50% institutional contribution.

That’s just five off the top of my head. I’m sure others will have suggestions. If so, please feel free to make suggestions through the comments box below.

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The Scale of Intensity – Don Paterson

Posted in Poetry with tags , , , on July 30, 2024 by telescoper

1) Not felt. Smoke still rises vertically. In sensitive individuals, déjà vu, mild amnesia. Sea like a mirror.

2) Detected by persons at rest or favourably placed, i.e. in upper floors, hammocks, cathedrals, etc. Leaves rustle.

3) Light sleepers wake. Glasses chink. Hairpins, paperclips display slight magnetic properties. Irritability. Vibration like passing of light trucks.

4) Small bells ring. Small increase in surface tension and viscosity of certain liquids. Domestic violence. Furniture overturned.

5) Heavy sleepers wake. Public demonstrations. Large flags fly. Vibration like passing of heavy trucks.

6) Large bells ring. Bookburning. Aurora visible in daylight hours. Unprovoked assaults on strangers. Glassware broken. Loose tiles fly from roof.

7) Weak chimneys broken off at roofline. Waves on small ponds, water turbid with mud. Unprovoked assaults on neighbors. Large static charges built up on windows, mirrors, television screens.

8) Perceptible increase in weight of stationary objects: books, cups, pens heavy to lift. Fall of stucco and some masonry. Systemic rape of women and young girls. Sand craters. Cracks in wet ground.

9) Small trees uprooted. Bathwater drains in reverse vortex. Wholesale slaughter of religious and ethnic minorities. Conspicuous cracks in ground. Damage to reservoirs and underground pipelines.

10) Large trees uprooted. Measurable tide in puddles, teacups, etc. Torture and rape of small children. Irreparable damage to foundations. Rails bend. Sand shifts horizontally on beaches.

11) Standing impossible. Widespread self-mutilation. Corposant visible on pylons, lampposts, metal railings. Most bridges destroyed.

12) Damage total. Movement of hour hand perceptible. Large rack masses displaced. Sea white.

by Don Paterson (b. 1963)

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Gravitational Waves from Failing Warp Drives

Posted in OJAp Papers, The Universe and Stuff with tags , , , , , on July 29, 2024 by telescoper

In Saturday’s roundup of the week’s publications at the Open Journal of Astrophysics I mentioned a paper entitled “What no one has seen before: gravitational waveforms from warp drive collapse” by Katy Clough (QMUL, UK), Tim Dietrich (Potsdam, Germany) and Sebastian Khan (Cardiff, UK). 

Looking at the title of this paper you might be tempted to dismiss it on the grounds that warp drives are the stuff of science fiction (which they are), but this paper is really a rigorous technical study of the dynamical evolution and stability of spacetimes that violate the null energy condition, inspired by the idea of a warp drive. As soon as I announced this paper on social media it started to get attention. That will probably increase because there is now a press release to accompany the paper. I’ve taken the liberty of reproducing the text of the press release here:

–o–

Imagine a spaceship driven not by engines, but by compressing the spacetime in front of it. That’s the realm of science fiction, right? Well, not entirely. Physicists have been exploring the theoretical possibility of “warp drives” for decades, and a new study published in the Open Journal of Astrophysics takes things a step further – simulating the gravitational waves such a drive might emit if it broke down. 

Warp drives are staples of science fiction, and in principle could propel spaceships faster than the speed of light. Unfortunately, there are many problems with constructing them in practice, such as the requirement for an exotic type of matter with negative energy. Other issues with the warp drive metric include the potential to use it to create closed time-like curves that violate causality and, from a more practical perspective, the difficulties for those in the ship in actually controlling and deactivating the bubble. 

This new research is the result of a collaboration between specialists in gravitational physics at Queen Mary University of London, the University of Potsdam, the Max Planck Institute (MPI) for Gravitational Physics in Potsdam and Cardiff University. Whilst it doesn’t claim to have cracked the warp drive code, it explores the theoretical consequences of a warp drive “containment failure” using numerical simulations.

Dr Katy Clough of Queen Mary University of London, the first author of the study explains: “Even though warp drives are purely theoretical, they have a well-defined description in Einstein’s theory of General Relativity, and so numerical simulations allow us to explore the impact they might have on spacetime in the form of gravitational waves.” 

Co-author Dr Sebastian Khan, from Cardiff University’s School of Physics and Astronomy, adds: “Miguel Alcubierre created the first  warp drive solution during his PhD at Cardiff University in 1994, and subsequently worked at the MPI in Potsdam. So it’s only natural that we  carry on the tradition of warp drive research in the era of gravitational wave astronomy .”

The results are fascinating. The collapsing warp drive generates a distinct burst of gravitational waves, a ripple in spacetime that could be detectable by gravitational wave detectors that normally target black hole and neutron star mergers. Unlike the chirps from merging astrophysical objects, this signal would be a short, high-frequency burst, and so current detectors wouldn’t pick it up. However, future higher-frequency instruments might, and although no such instruments have yet been funded, the technology to build them exists. This raises the possibility of using these signals to search for evidence of warp drive technology, even if we can’t build it ourselves. 

Dr Khan cautions “In our study, the initial shape of the spacetime is the warp bubble described by Alcubierre. While we were able to demonstrate that an observable signal could in principle be found by future detectors, given the speculative nature of the work this isn’t sufficient to drive instrument development.”

The study also delves into the energy dynamics of the collapsing warp drive. The process emits a wave of negative energy matter, followed by alternating positive and negative waves. This complex dance results in a net increase in the overall energy of the system, and in principle could provide another signature of the collapse if the outgoing waves interacted with normal matter. 

This research pushes the boundaries of our understanding of exotic spacetimes and gravitational waves. Prof Dietrich comments: “For me, the most important aspect of the study is the novelty of accurately modelling the dynamics of negative energy spacetimes, and the possibility of extending the techniques to physical situations that can help us better understand the evolution and origin of our universe, or the avoidance of singularities at the centre of black holes.”

Dr Clough adds: “It’s a reminder that theoretical ideas can push us to explore the universe in new ways. Even though we are sceptical about the likelihood of seeing anything, I do think it is sufficiently interesting to be worth looking!” 

The researchers plan to investigate how the signal changes with different warp drive models and explore the collapse of bubbles travelling at speeds exceeding the speed of light itself. Warp speed may be a long way off, but the quest to understand the universe’s secrets continues, one simulated crash at a time.

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Fear of Falling

Posted in Biographical, Brighton, Mental Health with tags , , , on July 28, 2024 by telescoper

The other day I slipped in the garden and fell into a flowerbed. It wasn’t serious as it was a raised bed so I didn’t fall far, though I did get a bit of a gash on my leg where I hit the little wall around it. It had been raining so everything was wet and I needed to clean myself up as well as clean my wound. I think it’s fair to say, though, that only my dignity really suffered (and a few plants got a bit squashed).

When I was safely back inside the house I got thinking about the difference between “to fall” and “to have a fall”. It seems to me that when someone is young you would say that they fell, but for an older person it would be that they “had a fall”. I’m not sure at what age the transition occurs, but I insist that I fell. I didn’t have a fall.

Thinking a bit more about it, perhaps it’s not the age of the person falling per se but the seriousness of the event. The likelihood of injury  of course increases with age. If you fall you get up reasonably quickly afterwards. If you have a fall then you would probably be injured, possibly seriously, and might need assistance.  If you have a great fall, of course, not even all the King’s horses and all the King’s men could help you.

All of which nonsense leads me to reflect on one of my phobias. I often say that I’m scared of heights, but it’s really not as simple as that. I have a fear of edges, i.e. sudden drops, even if they’re not particularly high. It gets worse with height – I had problems on my terrace in Barcelona, for example. This fear is irrational because I know I’m at no risk of falling, but there you go. Curiously, I don’t think I ever had this when I was a child.

Years ago when I was having therapy, this subject came up. The therapist guessed that it started when I got beaten up in Brighton back in the 1980s. During that event, I fell and, I think, hit my head on the edge of the pavement which knocked me out and scrambled my wits for some time afterwards. It’s possible being near a visible edge triggers some sort of flashback to this event.

I hope my more recent tumble doesn’t leave me with a fear of flower beds.

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Four New Publications at the Open Journal of Astrophysics

Posted in OJAp Papers, Open Access, The Universe and Stuff with tags , , , , , , , , , , , , , , , , , , on July 27, 2024 by telescoper

It’s Saturday morning, so once again it’s time for an update of activity at the Open Journal of Astrophysics. This week we have published another batch of four papers, the same number as last week, which takes the count in Volume 7 (2024) up to 64 and the total published altogether by OJAp up to 179.

Before announcing the week’s papers I’ll add three other updates you might find interesting:

  1.  When I looked at NASA/ADS this morning to help construct this post I saw that papers published in OJAp have now garnered over 2500 citations between them;
  2. We had a good response to our recent call for new members of the Editorial Board and have added four new members here;
  3. Last week we received a significant (unsolicited) cash donation from a higher education institution based in Europe to help with our work in Diamond Open Access. If any other organizations or individuals would like to do similar then please contact me!

Now, in chronological order, the four 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.

First one up is: “Widespread disruption of resonant chains during protoplanetary disk dispersal by Bradley M S Hansen (UCLA), Tze-Yeung Yu (UCLA) and Yasuhiro Hasegawa (JPL), all based in California, USA.  The paper presents a discussion of the effect of a dispersing protoplanetary disk on the evolution of low-mass planets around a Solar mass star.  It was published on 21st July 2024 and is in the folder marked Earth and Planetary Astrophysics.

Here is a screen grab of the overlay, which includes the abstract:

 

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

The second paper to announce is “Using A One-Class SVM To Optimize Transit Detection” by Jakob Roche of the University of South Florida, also in the USA (but not in California). This articles discusses the advantages of One-Class Support Vector Machines (SVMs) over Convolutional Neural Networks (CNN) in the context of exoplanet detection. Its in the folder called Instrumentation and Methods for Astrophysics and was published on 25th July 2024.

You can see the overlay here:

 

 

 

The accepted version of this paper can be found on the arXiv here.

The next paper, also published on 25th July 2024, is in the folder marked High-Energy Astrophysical Phenomena. Its primary classification on arXiv is General Relativity and Quantum Cosmology (gr-qc), but it is cross-listed on astro-ph so we considered it for publication and had it refereed, with favourable results. It is entitled “What no one has seen before: gravitational waveforms from warp drive collapse” and is by Katy Clough (QMUL, UK), Tim Dietrich (Potsdam, Germany) and Sebastian Khan (Cardiff, UK).  Looking at the title of this paper you might be tempted to dismiss it on the grounds that warp drives are the stuff of science fiction (which they are), but this paper is really a rigorous technical study of the dynamical evolution and stability of spacetimes that violate the null energy condition, inspired by the idea of a warp drive.

Here is the overlay:

 

 

You can find the full text for this one on the arXiv here.

Last, published on 26th July 2024, we have a paper with the title “A study of gamma-ray emission from OJ 287 using Fermi-LAT from 2015-2023” by Vibhavasu Pasumarti and Shantanu Desai of the Indian Institute of Technology, Hyderabad, India. It is an investigation of the properties of gamma-ray emission from OJ287 (a BL Lac object) using the Fermi Large Area Telescope (LAT).  This one is also in the folder marked High-Energy Astrophysical Phenomena; here is the overlay

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

That’s all for this week. Stay tuned for another update next week.

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Ireland’s First Olympic Medal

Posted in Art with tags , , , on July 26, 2024 by telescoper

Ahead of the opening ceremony of the 2024 Paris Olympic Games, I thought I’d post a reminder of Ireland’s first ever Olympic medal. A silver medal was awarded to Ireland at the 1924 Olympic Games for this painting by Jack Butler Yeats, brother of the poet William Butler Yeats:

The Liffey Swim, by Jack B. Yeats (1923, 61cm x 91cm, oil on canvas)

Ireland only gained independence in 1922 so 1924 was the first Olympics at which Ireland competed as a separate nation. It may surprise you to learn that art competitions were a part of the Olympic Games from 1912 until 1948, as were competitions in music and literature. The 1924 Gold Medal for painting was won by an artist from Luxembourg called Jean Jacoby who specialized in sporting themes.

Although it was a style Yeats only started to experiment with around 1920, The Liffey Swim (which you can see in the National Gallery of Ireland) is clearly an Expressionist work – the unusual colour palette and texture of the paint are characteristics of that movement – but it also serves as an interesting bit of social history. The Liffey Swim is a regular event in Dublin (except during the Covid-19 pandemic) but only began in 1920 so it was fairly new when Yeats painted it. He captures the excited atmosphere surrounding the event by placing the viewer in the middle of a huge crowd struggling to get a good view, with the swimmers only shown in cursory detail. You see far more of the spectators than you do of the race!

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R.I.P. Peter Thomas (1961-2024)

Posted in R.I.P. with tags , , , , , on July 25, 2024 by telescoper

Once again I have to use this blog to pass on some very sad news. Professor Peter Thomas of Sussex University passed away last weekend at the age of 62.

Peter Thomas (left) joined the University of Sussex as a lecturer in the Astronomy Centre in 1989 and remained there for his entire career. I know from my own time as Head of School that he was an excellent colleague. who made huge contributions to the University and indeed to his research discipline of cosmology.

Peter studied Mathematics at Cambridge University, graduating in 1983 and then did Part III (also known as the Certificate of Advanced Study) which he obtained in 1984. He stayed in Cambridge to do a PhD in the Institute of Astronomy under the supervision of Andy Fabian on Cooling Flows and Galaxy Formation, which he completed in 1987. He then spent a couple of years in Toronto as a Postdoctoral Fellow at the Canadian Institute for Theoretical Astrophysics (CITA) before taking up his lectureship at Sussex in 1989. His main research interests were in in the areas of galaxy formation, including numerical and semi-analytic models, and computer simulations of the formation of clusters of galaxies.  He was a widely known and very highly respected researcher in the field of theoretical cosmology and extragalactic astrophysics.

I was a PDRA in the Astronomy Centre at Sussex when Peter joined in 1989; he was Professor in the Department of Physics & Astronomy when I returned there as Head of School of Mathematical and Physical Sciences in 2013, a position he himself subsequently held. He was a much-valued member of staff who made huge contributions to the Astronomy Centre, the Department of Physics & Astronomy, the School of Mathematical and Physical Sciences, and the University of Sussex as a whole. I also remember him as a colleague on various panels for PPARC and then STFC on which he served diligently.

Having known Peter for 35 years, and being of similar age, it was a shock to hear that he passed away. I understand that he had been suffering from cancer for over a year. I send my deepest condolences to his family, friends and colleagues. I understand that his funeral will be a private family affair, but there will be a more public occasion to celebrate his life at a later date.

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