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SUMMARY:A Good Hard Look at Cosmic Supermassive Black Hole Growth - Niel B
 randt (Penn State)
DTSTART:20170927T150000Z
DTEND:20170927T160000Z
UID:TALK79821@talks.cam.ac.uk
CONTACT:54071
DESCRIPTION:The Chandra exposure on the Chandra Deep Field-South (CDF-S) h
 as recently been increased to 7 Ms\, making it the most sensitive extragal
 actic X-ray survey by a wide margin. About 1050 X-ray sources have been de
 tected\, primarily distant active galactic nuclei (AGNs) and starburst/nor
 mal galaxies. The unmatched deep multiwavelength coverage for these source
 s allows superb follow-up investigations\; e.g.\, 98.4% of the X-ray sourc
 es have multiwavelength counterparts\, and 97.8% have spectroscopic/photom
 etric redshifts. I will briefly describe the sources in the 7 Ms CDF-S and
  some exciting first science results. The latter will include (1) constrai
 nts on supermassive black hole growth in the first galaxies as revealed by
  direct detection and stacking\; (2) the relation between black-hole growt
 h and host stellar mass\; (3) long-term variability studies of the AGNs pr
 oducing most of cosmic accretion power\; and (4) the discovery of a repres
 entative of a new population of faint\, fast X-ray transient sources.\n
LOCATION:Sackler Lecture Theatre\, Institute of Astronomy
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