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Search for gravitational-wave transients associated with magnetar bursts during the third Advanced LIGO and Advanced Virgo observing run

Published online by Cambridge University Press:  27 February 2023

Kara Merfeld Open the ORCID record for Kara Merfeld [Opens in a new window]
Kara Merfeld*
Affiliation:
University of Oregon Department of Physics, Eugene, OR 97403, USA email: [email protected]
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Abstract

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Magnetars are neutron stars with exceptionally strong dipole magnetic fields which are observed to display a range of x-ray flaring behavior, but the flaring mechanism is not well understood. The third observing run of Advanced LIGO and Virgo extended from April 1, 2019 to March 27, 2020, and contained x-ray flares from known magnetar SGR 1935+2154, as well as the newly-discovered magnetar, Swift J1818-1607. We search for gravitational waves coincident with these magnetar flares with minimally modeled, coherent searches which specifically target both short-duration gravitational waves produced by excited f-modes in the magnetar’s core, as well as long-duration gravitational waves motivated by the Quasi-Periodic Oscillations observed in the tails of giant flares. In this talk, we report on the methods and sensitivity estimates of there searches, and the astrophysical implications.

Keywords

magnetargravitational wavef-modeSGR 1935+2154J1818-1607
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. 187 - 190
Copyright
© The Author(s), 2023. Published by Cambridge University Press on behalf of International Astronomical Union

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