Stage IV surveys such as LSST will probe deeply into the nonlinear regime, where systematic effects from galaxy bias and baryonic feedback become dominant and poorly constrained nuisance parameters ca...

Ridges in galaxy density fields measured by photometric surveys are 2D projections of filaments in the cosmic web, and so should lens light from background galaxies. We report on a detection of this e...

We introduce a framework for the enhanced estimation of photometric redshifts using Self-Organising Maps (SOMs). Our method projects galaxy Spectral Energy Distributions (SEDs) onto a two-dimensional ...

The Cosmology and Astroparticle Physics group investigates the formation and evolution of large-scale structures in the Universe, the nature of dark m...

By Ottavia Truttero, Joe Zuntz & 2 more. A study of the effect of vbaryonic feedback oin the dtermination of cosmological parameters and the possibility of using large-scale clustering information onl...

First 2025 release of GLASS. Release note Changelog Full list of commits

Accurately modelling matter power spectrum effects at small scales, such as baryonic feedback, is essential to avoid significant bias in the estimation of cosmological parameters with cosmic shear. Ho...

It's a rainy Saturday morning here in Barcelona, and here's the last update from the Open Journal of Astrophysics before I depart these shores. In fact there is only one paper to report this week, bei...

By Nisha Grewal, Joe Zuntz & 1 more. Quantifying the accuracy, precision and efficiency of lensing reconstruction methods using topological characteristics.

The freshest thing in stand-up – straight from the (research) field to funny with a new crop of comedic academics from Scotland's universities every month. A...

It's Sunday but I'll be a bit busy next week so I'm taking the opportunity today to announce yet another new paper at the Open Journal of Astrophysics. This one was published on Friday 20th October. T...