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Hi Everyone,</div>
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This week's lunch talk will be given by Helen on Thursday at 1pm in A113. Title and abstract are below.</div>
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<b>Quasars cooling cluster atmospheres</b></div>
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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.</div>
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<b>Mikey Anderson Jennings</b></div>
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<b>Astronomy PhD Student </b></div>
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<b>University of Nottingham</b></div>
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<b>Centre for Astronomy and Particle Theory<br>
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