[Astro] [CAPT] CAPT Weekly Bulletin (w/c 14-10-24)

[Ella Batchelor]

Tuesdays at 11am, CAPT Foyer – Astro Coffee



Tuesday 15th October, A113 CAPT at 11am – Astronomy Journal Club



Tuesday 15th October, A113 CAPT at 1pm – Particle Cosmology Seminar
Eemeli Tomberg (Lancaster)
Primordial black holes and stochastic inflation

Quantum fluctuations from cosmic inflation give rise to the macroscopic structures of the universe. The strongest fluctuations collapse into primordial black holes, a dark matter candidate and a possible source of gravitational waves. Stochastic inflation is a tool to compute the fluctuation statistics non-perturbatively, needed for accurate black hole predictions. I discuss recent progress in these computations, their numerical implementation and analytical approximations, and the implications for black hole abundance in inflationary models.

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 16th October, A113 CAPT at 3.45pm – JAMBOREE

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Thursday 17th October at 1pm, A113 CAPT – Astronomy Lunch Talk
Helen Russell
Quasars cooling cluster atmospheres


The impact of quasar feedback on galaxy and cluster hot atmospheres is still largely unknown.  This is principally due to a lack of low-redshift analogues for which we can spatially resolve the quasar's immediate environment.  I will present results from a new large Chandra program on H1821+643, which is the nearest quasar hosted by a galaxy cluster.  Using detailed simulations to subtract the quasar light, I will show that, at the cluster centre, the gas temperature drops precipitously to <0.4keV and the density increases by over an order of magnitude.  Looking to the future, I will also discuss the future of high spatial resolution X-ray observations with AXIS.



Thursday 17th October, A113 CAPT at 3pm – 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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