Astronomy and Astrophysics – Astrophysics
Scientific paper
2001-06-13
AJ, 122, 2177 (2001)
Astronomy and Astrophysics
Astrophysics
17 pages, submitted to The Astronomical Journal
Scientific paper
10.1086/323454
We describe the optical, near-infrared, and radio properties of a sample of hard (2-7 keV) X-ray sources detected in a deep Chandra observation of the field surrounding the Abell 370 cluster. We combine these data with similar observations of the Chandra Deep Field-North and the Hawaii Survey Field SSA13 to obtain a sample of 69 hard X-ray sources (45 are spectroscopically identified) with extremely deep 20 cm observations. We find that about 4% of the >Lstar galaxy population is X-ray luminous at any time and hence that black hole accretion has a duration of about half a Gyr. We find that about 30% of the summed 2-7 keV flux from our total sample is from sources at z<1. We estimate the bolometric luminosities of accretion onto supermassive black holes and the mass inflow rates. The time history of the accretion rate density is evaluated, and its integrated value is reasonably consistent with the value inferred from the local black hole mass to bulge mass ratio.
Barger Amy. J.
Bautz Mark W.
Brandt Wiliam N.
Cowie Lennox L.
Garmire Gordon P.
No associations
LandOfFree
Supermassive Black Hole Accretion History Inferred from a Large Sample of Chandra Hard X-ray Sources does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Supermassive Black Hole Accretion History Inferred from a Large Sample of Chandra Hard X-ray Sources, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Supermassive Black Hole Accretion History Inferred from a Large Sample of Chandra Hard X-ray Sources will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-507033