[Astro] [CAPT] CAPT Weekly Bulletin (w/c 07-07-25)

[Ella Batchelor]

Tuesdays at 11am, CAPT Foyer – Astro Coffee



Tuesday 8th July at 11.30am, A113 CAPT – Astronomy Journal Club



Tuesday 8th July at 1pm, A113 CAPT – Particle Cosmology and Gravity Seminar
Andrius Tamosiunas (Institute of Theoretical Physics (IFT), UAM-CSIC Madrid)

Probing the Shape of the Universe: Approaches with Artificial Intelligence



While there has been tremendous success in measuring the geometry of the Universe, the question of cosmic topology remains open. A Universe with non-trivial topology would have potentially observable effects, such as "clone" images of astronomical sources or circular patterns in the CMB ("circles in the sky"). In this talk I will present an overview of the recent studies of non-trivial topologies and their observational signatures. I will outline the effects of non-trivial topology on the CMB anisotropies. Finally, I will summarise our recent efforts to employ machine learning to search for the observational signatures of cosmic topology.


Link to join: https://teams.microsoft.com/l/meetup-join/19%3ameeting_OGM3OTk5NzQtZWEwZS00ZmUyLTk3MGUtZjFhY2M5OTU2MjI1%40thread.v2/0?context=%7b%22Tid%22%3a%2267bda7ee-fd80-41ef-ac91-358418290a1e%22%2c%22Oid%22%3a%22f3250584-4b5f-48fa-a897-08e77f2246b7%22%7d
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Wednesday 9th July at 3.45pm, A113 CAPT – Astronomy Weekly Seminar

Dr Yara Jaffé (Universidad Técnica Federico Santa María)
Environmental quenching of galaxies across the cosmic web

From a galaxy’s perspective, its environment evolves continuously over cosmic time, as it migrates from low- to high-density regions along the cosmic web. In this talk, I will review our current understanding of how such environmental changes shape galaxy evolution, focusing on both gravitational interactions between galaxies and hydrodynamical processes involving the surrounding intragroup or intracluster medium. I will highlight recent discoveries of galaxies caught in the act of transformatio, most notably the striking “jellyfish” galaxies, which are undergoing dramatic gas stripping due to intense ram-pressure.

A key challenge in this field is disentangling the cumulative impact of different environmental mechanisms, especially considering that galaxies may be “pre-processed” in groups and filaments before falling into massive clusters. To address this complexity, we are leading the CHANCES survey, a major 4MOST program designed to systematically explore galaxy transformation across a wide range of environments and redshifts. I will present some early results and discuss future perspectives.
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Thursday 9th July at 3pm, A113 CAPT – Particle Cosmology Journal Club
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Fridays at 4pm, CAPT Foyer – CAPT Cakes
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If you have any events/visitors you would like included in next week’s bulletin, please let me know.


Best wishes

Ella

Ella Batchelor (she/her)
Administrator

School of Physics & Astronomy

University of Nottingham
A112a Centre for Astronomy & Particle Theory
University Park
Nottingham, NG7 2RD

+44 (0) 115 74 86778 |  nottingham.ac.uk<http://nottingham.ac.uk/>

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