Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010head...11.2003j&link_type=abstract
American Astronomical Society, HEAD meeting #11, #20.03; Bulletin of the American Astronomical Society, Vol. 41, p.691
Astronomy and Astrophysics
Astronomy
Scientific paper
Most galaxies harbor a supermassive black hole at their center. At high redshifts, these galaxies experienced a very active phase, when the black holes produced enormous amounts of energy, likely fueled through galaxy mergers. Today, some of these supermassive black holes still undergo occasional outbursts that are seen through spectacular jets, cavities and buoyant bubbles and shocks in the surrounding X-ray gas. This paper describes results for a sample of 200 nearby early-type galaxies for which we measure the X-ray and radio emission from their supermassive black holes. X-ray luminosities range from a few 10e38 ergs/s to 10e41 ergs/s, while radio emission is detected from two-thirds of the sample. We compare the bolometric luminosities of the nuclei to the kinetic power of the outbursts as measured from X-ray cavities found in the diffuse hot gas.
Churazov Eugene
Forman William
Giacintucci Simona
Jones Christine
Kraft Ralph
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