Astronomy Colloquium - Ariadna Murguia Berthier 

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Image of a black hole behind rings of dust in galaxy IC 5063
December 2, 2021
3:00PM - 4:00PM
Location
In Person & Online: Chem & Biomolecular Eng & Chem (CBEC) - Room 130; Zoom Webinar

Date Range
Add to Calendar 2021-12-02 15:00:00 2021-12-02 16:00:00 Astronomy Colloquium - Ariadna Murguia Berthier  The Fate of the Merger Remnant in GW170817 and It's 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. 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 to constrain key properties of the merger, such as the delay time between the merger and the collapse to a black hole.​ Speaker: Ariadna Murguia Berthier, Northwestern University In Person & Online: Chem & Biomolecular Eng & Chem (CBEC) - Room 130; Zoom Webinar Department of Astronomy astronomy@osu.edu America/New_York public
Description

The Fate of the Merger Remnant in GW170817 and It's 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. 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 to constrain key properties of the merger, such as the delay time between the merger and the collapse to a black hole.​

Speaker: Ariadna Murguia Berthier, Northwestern University

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