期刊
ASTROPHYSICAL JOURNAL
卷 658, 期 1, 页码 L9-L12出版社
IOP PUBLISHING LTD
DOI: 10.1086/513507
关键词
accretion, accretion disks; black hole physics; galaxies : jets; radio continuum : galaxies
We derive the kinetic luminosity function for flat-spectrum radio jets, using the empirical and theoretical scaling relation between jet power and radio core luminosity. The normalization for this relation is derived from a sample of flat-spectrum cores in galaxy clusters with jet-driven X-ray cavities. The total integrated jet power at z = 0 is W-tot approximate to 3 x 10(40) ergs s(-1) Mpc(-3). By integrating W-tot over redshift, we determine the total energy density deposited by jets as e(tot) approximate to 2 x 10(58) ergs Mpc(-3). Both W-tot and e(tot) are dominated by low-luminosity sources. Comparing e(tot) to the local black hole mass density rho(BH) gives an average jet production efficiency of e(jet) = e(jet)/rho C-BH(2) approximate to 3%. Since black hole mass is accreted mainly during high-luminosity states, e(jet) is likely much higher during low-luminosity states.
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