[Astro] [CAPT] CAPT Weekly Bulletin (w/c 02-03-26)

[Ella Batchelor (staff)]

Monday 2nd March at 1.30pm, A113 CAPT – Theoretical Physics Student Seminar

Usama Aqeel

WTF is an EFT?

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Tuesdays at 11am, CAPT Foyer – Astro Coffee

Tuesdays at 11.30am, A113 CAPT – Astronomy Journal Club



Tuesday 3rd March at 1pm, A113 CAPT – Particle Cosmology and Gravity Seminar

Jonathan M Butterworth (UCL)

Future-proofing measurements to probe the energy frontier


The Large Hadron Collider at CERN gives us direct access to physics above the key "electroweak symmetry breaking" energy scale, where the weak and electromagnetic forces come together. This scale is associated with the Higgs boson, discovered at CERN in 2012. As we near the end of the third running period of the collider, and head toward the "high luminosity" era, I will discuss how precise measurements can be made with a high degree of model-independence, and how they can therefore be used to probe both the Standard Model and physics beyond it. I will present a method of exploiting this and latest results.



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 4th March at 3.45pm, C4 Physics – Astronomy Seminar
Freeke van de Voort (Cardiff)

Galaxies and their circumgalactic medium in cosmological simulations



Galaxies are intimately connected to the environments they live in. The haloes around them contain the gas reservoir from which the galaxies grow, while galactic outflows heat and enrich this circumgalactic medium (CGM). Understanding the CGM can thus help us constrain models of galaxy formation. Using zoom-in cosmological simulations of galaxies, I will discuss the physical properties of the gas around galaxies. The multiphase nature of the CGM is affected by the resolution of our simulations, which enhances the amount of cool, neutral gas in the halo, bringing them more in line with observations. I will show how the properties of galaxies and the CGM depend on the presence of magnetic fields, on feedback from relativistic cosmic rays, and on the inclusion of thermal conduction. I will also discuss how and why dwarf galaxies and massive galaxies are affected differently by these processes.

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Thursday 5th March at 1pm, A113 CAPT – Astronomy Lunch Talk

Adela Fernandez

Can intracluster light trace the shape of dark matter haloes?



We investigate whether the intracluster light (ICL) can be used as a tracer of the shape of the dark matter (DM) haloes in galaxy clusters. Establishing such a link would provide a new way to probe the shapes of DM directly from deep imaging, to ultimately help us better understand its nature. Using the Hydrangea simulations, we measure the three-dimensional and projected shapes of the ICL and DM concentric ellipsoidal shells using the shape tensor method. We find that the ICL and DM position angles are closely aligned, with major-axis misalignments below 10 degrees, and very similar axis ratios, though the DM is slightly rounder on average. We show that the satellite distribution is a less reliable tracer than the ICL, with large misalignment angles and a bias toward more elliptical shapes. These results indicate that the ICL can serve as a useful proxy for the ellipticity and orientation of DM haloes.



Thursday 5th March at 2.45pm, 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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