This week Prof Nate Bastian and I, along with Prof. Mark Gieles of the University of Surrey, hosted a Royal Society International Scientific Symposium at Chicheley Hall in Buckinghamshire. The symposium brought together 20 astrophysicists from around the world to discuss how to incorporate models of globular cluster formation and evolution into cosmological simulations, and how observations of globular clusters can be used to inform the study of galaxy evolution. Our thanks to all the attendees, the Royal Society, and the staff at Chicheley Hall for making the symposium a great success.
Today the EAGLE team has been awarded an initial computing time allocation of 30 million core-hours via the PRACE network. This allocation is to conduct the EAGLE-XL simulations, which will extend the EAGLE suite of galaxy formation simulations to larger cosmic volumes, affording us better statistical sampling and enabling examination of rare cosmic structures such as galaxy clusters. The simulations will be conducted using the PizDaint facility in Switzerland, the most powerful supercomputer in Europe.
This week we’ve had a letter accepted for publication the prestigious journal Physical Review Letters. The letter, led by my colleague Aaron Ludlow (Durham), examines the relationship between centripetal acceleration and mass, of galaxies in the EAGLE galaxy formation simulations. The observed relationship, often called the “mass discrepancy – acceleration relation”, or MDAR, has been cited as a challenge to the LambdaCDM cosmogony. We found that galaxies in the simulations, which are built on the LambdaCDM framework, in fact yield the same acceleration-mass profile as real galaxies. This undermines the argument that this particular observable poses a challenge to the prevailing cosmological framework.
Today I am visiting the Institute for Cosmology & Gravitation at the University of Porstmouth, to give the weekly seminar. A few former colleagues from Durham seem have made their way to the ICG, so it will be home from home!
Today I am at the Royal Society HQ to sit on the science working group for the forthcoming “Meeting of Minds” fellows’ conference. We have around 200 fantastic abstracts to mull over, so it could be a long and fascinating day!
One of my favourite twitter accounts is Hubble Live, which tells you in real time the observations that the Hubble Space Telescope is taking, and who they are for. We received a nice tweet on Dec 28th:
LJMU and the Virgo Consortium were highly commended at the THE awards, with the EAGLE project finishing as runners-up in the contest of Research Project of the Year. LJMU ran a brief news story about the night, and we got a mention from THE on twitter too.
Sequences rendered by Jim Geach and I for the IMAX feature Voyage of Time, using HPC facilities at LJMU and the University of Hertfordshire, are now publicly available via the IMAX YouTube channel:
In these, Jim and I discuss simulations of galaxy formation, including the EAGLE simulations (see also on ADS) and exploding stars. We’ve also rendered a simulation of the formation of the first stars in the Universe, which is discussed by Prof. Volker Bromm of the University of Texas: