Séminaire Univers / |
| « AVISM: Algorithm for Void Identification in coSMology » |
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Oscar Monllor Berbegal |
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Cosmic voids are key elements in our understanding of the large-scale structure of the Universe. They are crucial to constrain cosmological parameters and to understand the formation and evolution of the Universe. Furthermore, they serve as pristine laboratories for studying galaxy formation, isolated from the complexities of dense environmental effects. Thus, the ability to accurately and consistently identify voids, both in numerical simulations and in observations, is essential.
In this talk, I present Algorithm for Void Identification in coSMology (AVISM), a new void finder designed for analysing both cosmological simulation outputs and observational galaxy catalogues. For simulations, the code handles raw particle or cell data, dark matter halos, or synthetic galaxy catalogues. For observational data, voids can be identified when the code is coupled with external tools that provide the necessary dynamical information. I will detail the void-finding procedure and present interesting results from both simulations and observations. |
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mardi 10 février 2026 - 11:00 Salle des séminaires Évry Schatzman Institut d'Astrophysique de Paris |
| Pages web du séminaire / Seminar's webpage |