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X-Ray Imaging Studies of NGC 1275 and The Core of The Perseus Cluster

Published online by Cambridge University Press:  30 March 2016

J. Grindlay ,
G. Branduardi  and
A. Fabian
J. Grindlay
Affiliation:
Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts, USA.
G. Branduardi
Affiliation:
Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts, USA.
A. Fabian
Affiliation:
Institute of Theoretical Astronomy, Cambridge, UK.

Extract

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The EINSTEIN X-ray Observatory has been used to study the X-ray emission from the center of the Perseus cluster, including the active galaxy NGC 1275. Both a point source and extended (˜ 6’) source are observed from NGC 1275. The central 40’ × 40’ region of the Perseus cluster around NGC 1275 displays an interesting temperature and surface brightness distribution. Simple hydrostatic isothermal sphere models do not well describe the cluster emission. The surface brightness of the high resolution image of NGC 1275 can be fit with a constant-pressure but centrally-cooling (i.e., temperature increases with radius) gas which suggests a radiative cooling accretion flow onto NGC 1275.

Type
Joint Discussion
Information
Highlights of Astronomy , Volume 5: Highlights of Astronomy. As presented at the XVIIth General Assembly of the IAU, 1979 , 1980 , pp. 741 - 745
Copyright
Copyright © Cambridge University Press 1980

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