Video URL

https://pirsa.org/14110077

Stellar Dynamical Measurements of the Black Hole in M87 and Friends

Gultekin, K. (2014). Stellar Dynamical Measurements of the Black Hole in M87 and Friends. Perimeter Institute for Theoretical Physics. https://pirsa.org/14110077

Gultekin, Kayhan. Stellar Dynamical Measurements of the Black Hole in M87 and Friends. Perimeter Institute for Theoretical Physics, Nov. 11, 2014, https://pirsa.org/14110077 

          @misc{ scivideos_PIRSA:14110077,
            doi = {10.48660/14110077},
            url = {https://pirsa.org/14110077},
            author = {Gultekin, Kayhan},
            keywords = {Strong Gravity},
            language = {en},
            title = {Stellar Dynamical Measurements of the Black Hole in M87 and Friends},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2014},
            month = {nov},
            note = {PIRSA:14110077 see, \url{https://scivideos.org/index.php/pirsa/14110077}}
          }

Kayhan Gultekin University of Michigan–Ann Arbor

DOI 10.48660/14110077
Source Repository PIRSA
Collection
Talk Type Conference
Subject

Abstract

Stellar dynamical measurements of black hole masses have become the de facto standard method. I will give a brief review of how this measurement method works, along with arguments for its overall reliability and caveats. Then I will turn my attention to the case of the black hole in M87. The black hole is undeniably large ? billions of solar masses ? but has a stellar dynamical mass measurement in disagreement with gas dynamical mass measurements at about the 2 sigma level. I will discuss potential systematic uncertainties in both measurements and avenues to reconciling the discrepancy.