A Good Hard Look at Cosmic Supermassive Black Hole Growth

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• Niel Brandt (Penn State)
• Wednesday 27 September 2017, 16:00-17:00
• Sackler Lecture Theatre, Institute of Astronomy.

If you have a question about this talk, please contact mbanerji.

The Chandra exposure on the Chandra Deep Field-South (CDF-S) has recently been increased to 7 Ms, making it the most sensitive extragalactic X-ray survey by a wide margin. About 1050 X-ray sources have been detected, primarily distant active galactic nuclei (AGNs) and starburst/normal galaxies. The unmatched deep multiwavelength coverage for these sources allows superb follow-up investigations; e.g., 98.4% of the X-ray sources have multiwavelength counterparts, and 97.8% have spectroscopic/photometric redshifts. I will briefly describe the sources in the 7 Ms CDF -S and some exciting first science results. The latter will include (1) constraints on supermassive black hole growth in the first galaxies as revealed by direct detection and stacking; (2) the relation between black-hole growth and host stellar mass; (3) long-term variability studies of the AGNs producing most of cosmic accretion power; and (4) the discovery of a representative of a new population of faint, fast X-ray transient sources.

This talk is part of the Institute of Astronomy Extra Talks series.

This talk is included in these lists:

• Cambridge Astronomy Talks
• Combined External Astrophysics Talks DAMTP
• Cosmology, Astrophysics and General Relativity
• Institute of Astronomy Extra Talks
• Institute of Astronomy Talk Lists
• Sackler Lecture Theatre, Institute of Astronomy

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