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Type: Journal article
Title: Search for transient gravitational-wave signals associated with magnetar bursts during Advanced LIGO's second observing run
Author: Abbott, B.P.
Abbott, R.
Abbott, T.D.
Abraham, S.
Acernese, F.
Ackley, K.
Adams, C.
Adhikari, R.X.
Adya, V.B.
Affeldt, C.
Agathos, M.
Agatsuma, K.
Aggarwal, N.
Aguiar, O.D.
Aiello, L.
Ain, A.
Ajith, P.
Allen, G.
Allocca, A.
Aloy, M.A.
et al.
Citation: The Astrophysical Journal: an international review of astronomy and astronomical physics, 2019; 874(2):163-1-163-14
Publisher: American Astronomical Society; IOP Publishing
Issue Date: 2019
ISSN: 0004-637X
Statement of
B.P. Abbott … D. Beniwal … D.D. Brown … H. Cao … A.A. Ciobanu … M.R. Ganija … C. Ingram … W. Kim … E.J. King … J. Munch … S. Ng … D.J. Ottaway … P.J. Veitch … et al.
Abstract: We present the results of a search for short- and intermediate-duration gravitational-wave signals from four magnetar bursts in Advanced LIGO's second observing run. We find no evidence of a signal and set upper bounds on the root sum squared of the total dimensionless strain (h rss) from incoming intermediate-duration gravitational waves ranging from 1.1 × 10⁻²² at 150 Hz to 4.4 × 10⁻²² at 1550 Hz at 50% detection efficiency. From the known distance to the magnetar SGR 1806–20 (8.7 kpc), we can place upper bounds on the isotropic gravitational-wave energy of 3.4 × 10⁴⁴ erg at 150 Hz assuming optimal orientation. This represents an improvement of about a factor of 10 in strain sensitivity from the previous search for such signals, conducted during initial LIGO's sixth science run. The short-duration search yielded upper limits of 2.1 × 10⁴⁴ erg for short white noise bursts, and 2.3 × 10⁴⁷ erg for 100 ms long ringdowns at 1500 Hz, both at 50% detection efficiency.
Keywords: Gravitational waves; stars: magnetars
Rights: © 2019. The American Astronomical Society. All rights reserved.
DOI: 10.3847/1538-4357/ab0e15
Grant ID: ARC
Published version:
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