Matthieu Schaller
@mschaller.bsky.social
380 followers 490 following 91 posts
Lecturer in numerical cosmo @ LION+STRW Leiden University. Lead dev. of @swiftsimulation.bsky.social astro and cosmology code. #HPC. Creator of fake universes; all including cheese. 🇨🇭 www.matthieuschaller.com
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mschaller.bsky.social
Ladies & Gentlemen, The Universe:
mschaller.bsky.social
One especially nice result from @swiftsimulation.bsky.social -based simulations run by students attending the Ex-Gal galaxy simulation summer school in Durham last week.
mschaller.bsky.social
Sometimes, we have to go to the computer room and push the bytes around in the machine by hand.
Reposted by Matthieu Schaller
leidenphysics.bsky.social
📢Leiden Institute of Physics (LION) is #hiring a faculty member in experimental quantum physics (tenure-track, Asst. Prof. level, higher possible). Join us in exploring the limits of #quantummechanics! Apply by Oct 5, 2025 👉 edu.nl/hyt88
mschaller.bsky.social
Spending the day at LJMU for the 5 year anniversary of their computing centre.

The conference room alone is worth the trip.
Reposted by Matthieu Schaller
mschaller.bsky.social
The first paper (arxiv.org/abs/2508.21126) presenting our new set of galaxy formation simulations is now out!

This is the culmination of years of work by a large team.

The COLIBRE project will hopefully be a new milestone in the physics included in large-scale galaxy simulations.

(Sound on!)
Reposted by Matthieu Schaller
trayford.bsky.social
The sophisticated COLIBRE simulations finally land on the arXiv: arxiv.org/abs/2508.21126. Treating these with sonification, we can get new intuition for galaxy evolution to augment our visuals. Sound on for the explainer vid, visit the site for more! colibre.strw.leidenuniv.nl/videos.html 🔭🧪
mschaller.bsky.social
More information, maps, videos, and images at www.colibre-simulations.org
mschaller.bsky.social
The first paper (arxiv.org/abs/2508.21126) presenting our new set of galaxy formation simulations is now out!

This is the culmination of years of work by a large team.

The COLIBRE project will hopefully be a new milestone in the physics included in large-scale galaxy simulations.

(Sound on!)
Reposted by Matthieu Schaller
mschaller.bsky.social
A bit of astrophotography with a 6-months long single exposure over Randogne, Switzerland showing the path of the Sun over the Alps.

@solarcan.bsky.social
mschaller.bsky.social
Oh very nice one with the trees in the foreground
mschaller.bsky.social
Same data but with a slightly different processing of the colours
mschaller.bsky.social
A bit of astrophotography with a 6-months long single exposure over Randogne, Switzerland showing the path of the Sun over the Alps.

@solarcan.bsky.social
Reposted by Matthieu Schaller
aippotsdam.bsky.social
Über 150 internationale Wissenschaftlerinnen und Wissenschaftler diskutieren diese Woche am AIP beim 18. Potsdamer Thinkshop. Der Thinkshop mit dem Titel „The Role of Feedback in Galaxy Formation“ bietet Raum für neue Ideen und interdisziplinäre Zusammenarbeit. 💫

#astrophysics #galaxy #potsdam
Reposted by Matthieu Schaller
eucliduk.bsky.social
Take a whistle stop tour of @esa.int’s Euclid mission exhibit at this year’s GoodWood #FestivalOfSpeed with James, an Outreach Co-ordinator at The University of Edinburgh… (1/6) 🧵
mschaller.bsky.social
@runningastronomer.bsky.social gets the universe back on track for day 3 at the Goodwood festival of speed
mschaller.bsky.social
The universe is in progress
Reposted by Matthieu Schaller
metr.org
METR @metr.org · Jul 10
We ran a randomized controlled trial to see how much AI coding tools speed up experienced open-source developers.

The results surprised us: Developers thought they were 20% faster with AI tools, but they were actually 19% slower when they had access to AI than when they didn't.
mschaller.bsky.social
UK astronaut Tim Peake is being introduced to the mysteries of the Universe via our @swiftsimulation.bsky.social code running a live simulation
mschaller.bsky.social
Being rude is how we defeat the machines
qi.com
Adding the word ‘fucking’ to your Google search query disables the unwanted AI summary at the top of the results page.
Reposted by Matthieu Schaller
qi.com
Adding the word ‘fucking’ to your Google search query disables the unwanted AI summary at the top of the results page.
mschaller.bsky.social
How many more to entice you to join us? :)
mschaller.bsky.social
Simulated galaxies from the new model are 🤩🤩
mschaller.bsky.social
Seminar today at the Oskar Klein Center in Stockholm
mschaller.bsky.social
Utrecht physics theory group consumes enough pizza that they have dedicated garbage bins