IISER Pune
INDIAN INSTITUTE OF SCIENCE EDUCATION AND RESEARCH (IISER) PUNE
where tomorrow’s science begins today
An Autonomous Institution, Ministry of Human Resource Development, Govt. of India
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Seminars and Colloquia

Physics

Constraining black-hole spins with gravitational wave observations 
 
Tue, Apr 03, 2018,   04:00 PM at Physics Seminar Room 31, 2nd Floor, Main Building

Dr. Vaibhav Tiwari
Cardiff University

 
Abstract :
Observations of gravitational waves from merging black-hole binaries are beginning to teach us about the population of stellar-mass black holes in the universe. An individual observation allows measurements of the black-hole masses, but only limited information about the black-hole spins, both their magnitude and orientation. Previous work has shown that from multiple signals we can infer the distribution of spin orientations, which allows us to distinguish between formation and evolution scenarios. In my presentation, I will go over some basics of population analysis and will show how by taking into account the variation in the signal strength with spin magnitude, the mass distribution of black holes, and the signal degeneracy between mass-ratio and spin the scenarios can be greatly constrained.
 

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