Institute for Advanced Study Astrophysics Seminar

The fate of the merger remnant in GW170817 and its imprint on the jet structure

On August 17, 2017, LIGO/Virgo detected the first gravitational waves from merging neutron stars. This event, known as GW170817 was accompanied by observations all over the electromagnetic spectrum.  The peculiar gamma-ray burst that followed the merger in GW170817, is unlike any gamma-ray burst observed before. In order to explain the afterglow observations, there is a need for the jet launched after the merger to have structure, which is a natural consequence of the interaction of the jet with the ambient medium. In this talk, I will show special relativistic simulations of the interaction of the jet with several outflows launched during the merger and compare the simulations to the observation. I will then use the results in order to constrain key properties of the merger, such as the delay time between the merger and the collapse to a black hole.

Date & Time

December 01, 2022 | 11:00am – 12:00pm

Location

Bloomberg Lecture Hall and Zoom

Speakers

Ariadna Murguia-Berthier

Affiliation

University of California Santa Cruz

Event Series

Categories

Notes

Speaker will be remote.