Matthieu Schaller

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

Oh very nice one with the trees in the foreground

Same data but with a slightly different processing of the colours

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

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

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) 🧵

@runningastronomer.bsky.social gets the universe back on track for day 3 at the Goodwood festival of speed

The universe is in progress

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.

UK astronaut Tim Peake is being introduced to the mysteries of the Universe via our @swiftsimulation.bsky.social code running a live simulation

Let's go!

Being rude is how we defeat the machines

Adding the word ‘fucking’ to your Google search query disables the unwanted AI summary at the top of the results page.

How many more to entice you to join us? :)

Simulated galaxies from the new model are 🤩🤩

Seminar today at the Oskar Klein Center in Stockholm

Utrecht physics theory group consumes enough pizza that they have dedicated garbage bins

⚡️Are you into stellar streams, galaxies and dark matter?

We’re offering a JAE Intro 2025 #research #scholarship at
@ifca.es

🔍 Topic: Analysis of stellar streams
📍 Location: Santander, Spain
⏳ Duration: 7 months
💶 Grant: 600 €/month
🔗 goo.su/nsUJk

@csic.es @csicdivulga.bsky.social

New paper on the arXiv based on our cosmological simulation work!

Link: arxiv.org/abs/2504.15633

We use the flamingo runs to construct a simple analytic expression for the baryon correction to the matter power spectrum. Having a quick, but accurate enough, estimate is key for the analysis of data

New paper on the arXiv based on our cosmological simulation work!

Link: arxiv.org/abs/2504.15633

We use the flamingo runs to construct a simple analytic expression for the baryon correction to the matter power spectrum. Having a quick, but accurate enough, estimate is key for the analysis of data

Happy 4th once-in-a-generation-financial-crisis to those who celebrate.

Happy 4th once-in-a-generation-financial-crisis to those who celebrate.

Spring is here.

That' as much as we'll get here

A two panel figure. The x-axis is omega_m, the fraction of matter in the Universe. The y-axis is S8 on the left and sigma_8 on the right. Both are measures of the 'clumpiness' of dark matter. The contours show that the KiDS data (two measurements using slightly different statistics, COSEBIs and Bandpowers) agree with the data from the Planck CMB survey.

🥳 It's paper day for the completed #ESO Kilo-Degree Survey. We end our journey with a consistent picture of #cosmology 😲
I've been co-leading KiDS for 12yrs & I'm so proud of what the team's achieved. If you're at the #Euclid meet, go to Angus Wright's talk @10am today!🔭

ℹ️: arxiv.org/pdf/2503.19441

New career development opportunity

Research position (PhD student) in the field of cosmology The Cosmology and Astroparticle Physics group investigates the formation and evolution of large-scale structures in the Universe, the nature of dark m...

I am looking for a PhD student to work on beyond 2-point statistics for galaxy clustering & weak lensing as part of my Grant "Probing cosmic large-scale structure beyond the average" Details: uni-bielefeld.hr4you.org/job/view/417... Please share in your networks and encourage candidates to apply!

📢 We're hiring! 📢

In the context of our ENW-XL grant 'The Full Potential of the Higgs' we have 3 open PhD positions in our ATLAS group at Nikhef on the exciting search for double-Higgs production in the LHC Run-3 data!

➡️ jobs.nikhef.nl/jobs/3-phd-p... @nikhef.bsky.social

Spring is here

PSA: when a collaboration whose name starts with DE says they have found evidence for non-standard dark energy, the community should take that interpretation with more skepticism.

DESI does not show that w0wa explains there data. Eg neutrino mass remains negative even with w0wa