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Observations of Gravitational-wave Afterglows

Published online by Cambridge University Press:  27 February 2023

Alessandra Corsi Open the ORCID record for Alessandra Corsi [Opens in a new window]
Alessandra Corsi*
Affiliation:
Department of Physics and Astronomy, Texas Tech University, Box 1051, Lubbock, TX 79409-1051, USA email: alessandra.corsi@ttu.edu
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Abstract

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GW170817, the merger of two neutron stars witnessed through both its gravitational wave siren and its glow at all wavelengths of light, represents the first multi-messenger detection of a compact binary merger. The association of the GW in-spiral signal from GW170817 with a γ-ray burst, a kilonova, and a non-thermal afterglow spanning all bands of the electromagnetic spectrum, has provided rich constraints on the physics and astrophysics of neutron stars. Starting from the example of GW170817, I briefly summarize recent results on observations of electromagnetic afterglows from gravitational wave triggers. In the light of these results, I highlight some key questions that are yet to be answered after the GW170817 discovery. I conclude by commenting briefly on some opportunities that lie in front of us, as improvements in ground-based gravitational wave detectors’ sensitivities will transform a trickle of multi-messenger discoveries into a flood, bringing the field of gravitational wave astronomy from its infancy to its maturity.

Keywords

Gravitational wavesradiation mechanisms: generalmethods: observationalstars: neutron
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 16 , Symposium S363: Neutron Star Astrophysics at the Crossroads: Magnetars and the Multimessenger Revolution , June 2020 , pp. 92 - 104
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Copyright
© The Author(s), 2023. Published by Cambridge University Press on behalf of International Astronomical Union

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