Lessons learned from the galactic hosts of short gamma-ray bursts

ORAL

Abstract

The multimessenger event GW170817 unequivically connected binary neutron star mergers and short gamma-ray bursts (GRBs). Though it will take many years to significantly bolster the number of gravitational-wave events with identified electromagnetic counterparts, the growing number of host-identified short GRBs can fill this void in the interim, as well as probe compact binary merger hosts over a much larger redshift range. In this talk, I'll present new findings from a population of over 50 host-identified short GRBs. Information attained through spectroscopic and photometric observations of the hosts has led to novel constraints on delay-time distributions, binary progenitor properties, supernova kicks at compact binary formation, and host demographics. The demographics of this population will also help inform follow-up strategies for future gravitational-wave events that are potentially accompanied with an electromagnetic counterpart.

*Support for this work was provided by NASA through the NASA Hubble Fellowship grant HST-HF2-51474.001-A awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Incorporated, under NASA contract NAS5-26555.

Presenters

  • Michael J Zevin

    • University of Chicago

Authors

  • Michael J Zevin

    • University of Chicago
  • Anya Nugent

    • Northwestern
  • Wen-fai Fong

    • Northwestern
  • Susmita Adhikari

    • University of Chicago
  • Daniel Holz

    • University of Chicago