= Andrew Fabian
{c}
{wiki}
= A. C. Fabian
{c}
{synonym}
<Andrew Fabian> studies the interaction between accreting <supermassive black holes> and hot <gas> in <galaxy clusters>. His team's deep <Chandra X-ray Observatory> observation of the <Perseus cluster> revealed weak ripples in <X-ray> <surface brightness> around the central radio bubbles.
The study interpreted a nearby <density> jump as a weak <shock wave> and the ripples as signatures of propagating <sound waves>. Repeated inflation of bubbles by the central source could transfer enough <energy> to offset <radiative cooling> in the cluster core. The observation thus supplied a concrete mechanism linking a central <black hole>'s activity to the thermal evolution of much more extended <gas>.<A deep Chandra observation of the Perseus cluster: shocks and ripples by A. C. Fabian and others>[Abstract: nearly 200 ks observation, surface-brightness ripples, weak shock and heating–cooling comparison]{ref}
\Image[https://commons.wikimedia.org/wiki/Special:Redirect/file/Kavli%20Prize%20laureate%20of%202020%2C%20Andrew%20Fabian%20%282022%29%20%2852335973465%29.jpg?width=250]
{title=Portrait of <Andrew Fabian>}
{description=Thomas Barstad Eckhoff, credited as Thomas Eckhoff; published by The Kavliprize. https://creativecommons.org/licenses/by-sa/2.0/[CC BY-SA 2.0], via Wikimedia Commons.}
{source=https://commons.wikimedia.org/wiki/File:Kavli_Prize_laureate_of_2020%2C_Andrew_Fabian_%282022%29_%2852335973465%29.jpg}
{width=250}
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