The imprints of AGN feedback within a supermassive black hole's sphere of influence
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We present a new 300 ks Chandra observation of M87 that limits pileup to only
a few per cent of photon events and maps the hot gas properties closer to the
nucleus than has previously been possible. Within the supermassive black hole's
gravitational sphere of influence, the hot gas is multiphase and spans
temperatures from 0.2 to 1 keV. The radiative cooling time of the lowest
temperature gas drops to only 0.1-0.5 Myr, which is comparable to its free fall
time. Whilst the temperature structure is remarkably symmetric about the
nucleus, the density gradient is steep in sectors to the N and S, with
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1365-2966
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Science and Technology Facilities Council (ST/P004636/1)
Science and Technology Facilities Council (ST/N000927/1)