Astronomy Colloquium

February 28, 2017
Thursday, March 2, 2017 - 2:30pm to 3:30pm
1080 Physics Research Building
Globular Star Cluster

Black Holes in Globular Star Clusters

Jay Strader - Michigan State University 

Hundreds of stellar-mass black holes form in the early lifetime of a typical globular star cluster. But, unlike the case for neutron stars, no bright X-ray binaries containing black holes have been observed in globular clusters, which led to theoretical predictions that most or all of the black holes should be efficiently ejected through dynamical interactions. I will highlight results from our ongoing survey using deep radio continuum and X-ray data to search for accreting black holes in Milky Way globular clusters, presenting evidence that black holes may indeed be common in globular clusters. I will discuss implications for the dynamical formation of binary black holes observable as LIGO gravitational wave sources.

Coffee and Donuts will be served at 2:00pm in 4054 McPherson Lab.

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