Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21733526j&link_type=abstract
American Astronomical Society, AAS Meeting #217, #335.26; Bulletin of the American Astronomical Society, Vol. 43, 2011
Astronomy and Astrophysics
Astronomy
Scientific paper
At high redshifts, supermassive black holes can be radiatively bright, producing AGN (e.g. QSOs and BL Lacs) that are more luminous than entire galaxies. In the local Universe, the supermassive black holes that reside in the centers of most galaxies are generally radiatively quiet. However, many of these supermassive black holes do exhibit occasional outbursts that are seen through radio jets and in cavities or shocks in the surrounding X-ray atmospheres. In these low redshift systems, the kinetic energy of the outburst, that needed to produce the shocks and bubbles, exceeds the radiative output of the supermassive black hole by orders of magnitude. While most high redshift AGN are not in gas rich environments, where the kinetic energy of the supermassive black holes could be measured directly, we have collected a small sample of AGN with surrounding hot gas, and an even smaller sample that show X-ray cavities in the gas. In this contribution, we will compare the radiative and kinetic energies of high redshift AGN with their low redshift counterparts.
Forman William
Jones Christine
Kraft Ralph
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