Hard X-ray evidence for Advection Dominated Flows in the core of elliptical galaxies

Details Hard X-ray evidence for Advection Dominated Flows in the core of elliptical galaxies Hard X-ray evidence for Advection Dominated Flows in the core of elliptical galaxies

Oct 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000head....5.1509g&link_type=abstract

American Astronomical Society, HEAD Meeting #5, #15.09; Bulletin of the American Astronomical Society, Vol. 32, p.1204

Astronomy and Astrophysics

Astronomy

Scientific paper

We report the results of a BeppoSAX program to study "hard tails" in the core of nearby elliptical galaxies. The hard X-ray coverage of the PDS instrument on board BeppoSAX (15-200 keV) ideally complements the high-resolution and high-throughput imaging of Chandra and XMM-Newton. These results provide the first firm and direct X-ray evidence that Advection Dominated Flows are indeed at work in the core of elliptical galaxies. The cases of M87, NGC1052 and NGC4696 are presented, and the results compared with a partly overlapping sample of ASCA observations. The implication of these results for the synthesis of the X-ray background are also discussed

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