Séminaire/Seminar Galaxies |
| « Alignments of galaxies, gas, and AGN jets in cosmic filaments » |
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Lyla Jung |
| Galaxies form and grow while embedded in the cosmic web. The orientations of galaxy stellar distributions, HI spin axes, and AGN jets encode information about how the large-scale environment influences galaxy evolution, gas accretion, and black hole growth. In this seminar, I will present recent observational results from LOFAR and MeerKAT surveys on how cosmic filaments shape galaxy properties observable at radio frequencies. By comparing the orientations of AGN jets relative to their host galaxies, we find evidence that black holes in massive filament galaxies experience chaotic accretion as a result of numerous mergers. On the other hand, we find observational support for angular momentum transfer from filaments to low-mass HI galaxies, potentially through gas accretion. I will conclude by discussing the implications of these findings for galaxy and black hole evolution, and the role of current and future radio surveys in cosmic filament studies. |
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jeudi 26 février 2026 - 11:30 Salle des séminaires Évry Schatzman Institut d'Astrophysique de Paris |
| Page web du séminaire / Seminar's webpage |