Measuring the Spins of Accreting Black Holes

Abstract:

Both the continuum-fitting and Fe-line methods of measuring black hole spin will be discussed and compared, with attention to sources of systematic error.  Both methods rely on estimating the inner radius of the black hole’s accretion disk and identifying it with the radius of the ISCO.  The Fe-line method is extremely important because of its dominant role in measuring the spins of supermassive black holes, which is problematic for the continuum-fitting method.  Meantime, both methods are applicable to stellar-mass black holes, and we will discuss current efforts to cross-check the spins of individual black holes.  Finally, a summary of spin results for both stellar-mass and supermassive black holes will be presented.

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We hope to see you all there!

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*Instruction for how to access MIT Building NW22: Please use the front entrance of NW22. As you come in, the door on the right leading to LIGO lab will be unlocked on the days when GRITTS seminar is scheduled in LIGO lab. Please use the stairs to get to the second floor. As you enter interaction area, the conference room 268 will be on your right.
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GRITTS organizers:

Salvatore Vitale, Victoria Grinberg, Slawomir Gras
Scott Hughes, Nergis Mavalvala