Kayhan Gültekin

Picture of Kayhan

I am an assistant research scientist at the University of Michigan, Department of Astronomy. I study astrophysical black holes and their relationship with their hosts, be they galaxy nuclei, dark matter halos, stellar clusters, or whatever.

News

2014 Dec 15 - We recently published ATEL 6825 on “X-ray Absorption Lines in the Candidate Tidal Disruption Event ASASSN-14li.” This thing is weird/fascinating.

2014 Dec 15 - We recently published ATEL 6800 on “Chandra LETG Spectroscopy of Tidal Disruption Candidate ASASSN-14li.”

2014 Dec 11 - I have been very bad about reporting news for the past several months, even though there has been a lot! I will catch up with the backlog, but in the meantime: Our recent paper Ludlam et al. (2014), “X-ray Spectral and Variability Properties of Low-Mass AGN,” has been accepted by MNRAS and posted to astro-ph. Renee Ludlam, the first author, is a talented undergrad and will be applying to grad school this year; so keep your eye open for her!

2014 May 20 - Our recent paper Bellovary et al. (2014), “Effects of Inclination on Measuring Velocity Dispersion and Implications for Black Holes,” has been submitted to MNRAS and posted to astro-ph.

2014 May 29 - Our recent paper Gültekin et al. (2014), “Low-Mass AGN and Their Relation to the Fundamental Plane of Black Hole Accretion,” has been accepted by ApJL and posted to astro-ph.

2014 May 20 - Our recent paper Bellovary et al. (2014), “Effects of Inclination on Measuring Velocity Dispersion and Implications for Black Holes,” has been submitted to MNRAS and posted to astro-ph.

2014 March 6 - Our recent paper Degenaar et al. (2014), “Multi-Wavelength Coverage of State Transitions in the New Black Hole X-ray Binary Swift J1910.2−0546,” has been accepted by ApJ and posted to astro-ph.

2013 December 18 - Our recent paper Gultekin et al. (2013), “The Black Hole Mass and the Stellar Ring in NGC 3706,” has been accepted by ApJ and posted to astro-ph. We measure the black hole mass and come to the surprising conclusion that the stellar ring in NGC 3706 has stars that orbit in both directions.