Special Seminar

Special Seminar

Astrophysical Lessons from LIGO-Virgo's Black Holes

Date

January 24, 2022 - 3:00pm to 4:00pm

Location

MS Teams

Room

Howey N201/202

Speaker

Affiliation

Northwestern University

Host

Content Images

LIGO and Virgo have observed over 80 gravitational-wave sources to date, including mergers between black holes, neutron stars, and mixed neutron star-black holes. The origin of these merging neutron stars and black holes -- the most extreme objects in our Universe -- remains a mystery, with implications for stars, galaxies and cosmology. Fortunately, the gravitational waves from these mergers encode their masses, spins and distances, which in turn encode how, where and when black holes and neutron stars are made. I will review the latest LIGO-Virgo discoveries and introduce how we extract astrophysical lessons from gravitational-wave data. I will then discuss some of the most exciting lessons, including mass gaps, evolution with redshift, and implications for cosmology. While the latest gravitational-wave observations have answered a number of longstanding questions, they have also unlocked new puzzles. I will conclude by discussing what we can expect to learn from future gravitational-wave and multi-messenger data.

Bio: Maya got her Ph.D. in Astronomy & Astrophysics from the University of Chicago in 2020, and is now a NASA Einstein Postdoctoral Fellow at Northwestern University. Her research interests include gravitational waves, compact objects, massive stellar evolution, and astrostatistics. Maya is leading efforts to understand the astrophysical and cosmological implications of black hole and neutron star gravitational-wave sources detected by LIGO and Virgo.