Astrophysics and Cosmology with Gravitational Wave Observations

Nelson Christensen

Carleton College

Tue, Jun. 28th 2016, 10:30

Amphi Claude Bloch, Bât. 774, Orme des Merisiers

Presented in this seminar will be a summary of the results from Advanced LIGO's first observing run. Explanations will be given on how astrophysical information is extracted from gravitational-wave signals; this includes source parameters and implied rates of black hole mergers. The astrophysical and cosmological implications of the gravitational-wave detections and observations will be presented, such as the context of astrophysical models for binary black-hole formation as well as implications for testing general relativity in the strong-field regime. The ramifications of the limits set on a stochastic gravitational wave background will be summarized, for both cosmologically and astrophysically produced backgrounds. Finally, plans for future observations by LIGO, Virgo, and eventually KAGRA, will be given.

Contact : lbervas