The Duty Cycle of Supermassive Black Holes: X-raying Virgo

Details The Duty Cycle of Supermassive Black Holes: X-raying Virgo The Duty Cycle of Supermassive Black Holes: X-raying Virgo

May 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006sptz.prop30958t&link_type=abstract

Spitzer Proposal ID #30958

Physics

Scientific paper

Nuclear accretion on to super-massive black holes (SMBHs) plays a key role in the evolution of their host galaxies, as inferred from the ubiquity of SMBHs and the correlations between BH mass, and host mass and velocity dispersion. A fundamental unadressed issue is the actual distribution of accretion rates; we propose snapshot observations of an unbiased sample of 84 early-type galaxies in the Virgo cluster. Together with joint Spitzer 24 um observations, and publicly available HST-ACS and UV data, this survey will probe low-level nuclear activity over four orders of magnitude in black hole mass, thereby delivering the first unbiased census of the duty cycle of local SMBHs.

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