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Hei yliopistolainen! Seuraamalla tietotekniikkakeskusta @it.helsinki.fi pysyt jatkossa ajan tasalla yliopiston IT-asioissa ja saat nopeasti tiedon muun muassa tärkeistä tietoturvauutisista, palvelumuutoksista, uusista palveluista ja palvelukatkoista
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Are gigaparsec structures like the "Giant Arc" breaking the standard model of #cosmology?

No. We find similar patterns to be extremely common in a ΛCDM #universe, and we also show that the claimed overdensities are algorithmic artefacts.

What's more, these shapes detected in extremely sparse samples of galaxies are just as easily found in random point patterrns, suggesting they're spurious and don't reflect any underlying structures.

https://arxiv.org/abs/2502.03515

I'm David, a queer Finnish physicist originally from Scotland. I write on here in a personal capacity.

I use big computers to simulate the very early universe.

I also want to become a better teacher. For example, I want to understand what leads people from minoritised groups to abandon studies in physics.

I help out with the local LGBTQ+ community, such as our LGBTQ+ STEM day events.

#introduction

I'm a #postdoc at #HelsinkiUni. I like thinking about #EvolutionaryGenomics and the #genotype-phenotype map of #AdaptiveTraits

My current work is mainly on #salmon and #lifehistories, for example, what is the molecular basis of variation in #puberty?

On my free time I'm an #adrenalinejunky

Big fan of #fishes