Astrophysical and Planetary Sciences Colloquium

Monday, February 17, 2020 at 4:00 PM

JILA Auditorium

Refreshments served 30 minutes prior to start of talk in front of the JILA Auditorium.

Kayhan Gültekin, Michigan

"Supermassive Black Hole Outflows and Pairs"

A Pretty Image from the Talk


Supermassive black holes, once thought to be theoretical novelties, are now considered to play a major role in many astrophysical phenomena including galaxy evolution. Now that we live in the era of gravitational wave observations, it is interesting to look forward to a time when we can detect gravitational waves from supermassive black hole coalescence. A major question remains: Do supermassive black holes merge? I will review the case for supermassive black holes as active players in the universe, focusing on the black hole outflows. Then I will concentrate on my group’s recent work searching for dual and binary AGNs along with recent developments: (1) closer inspection of time-domain-identified binary candidates; (2) a Bayesian framework for determining duality in a Chandra observation; and (3) spectroscopic and time-domain identification of low-mass-ratio binary AGN.


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