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LIGO Seminar

Tuesday, November 17, 2020
1:00pm to 2:00pm
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Astrophysics and Cosmology with Gravitational Waves
Sharan Banagiri, University of Minnesota,

Astrophysics and cosmology with gravitational waves

The detection of gravitational waves from binary black hole and binary neutron star mergers is opening new avenues for astrophysics and cosmology. I will talk about three different applications of gravitational waves in this regard. First, I will describe searches for post-merger gravitational waves following the binary neutron star merger GW170817, and search and inference methods I developed targeting such signals. On the cosmological front I will describe how gravitational wave detections can be used as tracers of the large-scale structure of the Universe, and techniques I have developed to use BBH detections by LIGO-Virgo for a statistical measurement of the structure. Finally, I will talk about Bayesian techniques I have developed to map the gravitational-wave sky with the upcoming space-based gravitational-wave detector LISA, focusing in particular on the galactic foreground from white dwarf binaries.

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