[Astro] Lunch Talk

[Michael Anderson Jennings]

Hi Everyone,

This week's lunch talk will be given by Helen on Thursday at 1pm in A113. Title and abstract are below.

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.


Mikey Anderson Jennings
Astronomy PhD Student
University of Nottingham
Centre for Astronomy and Particle Theory

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