# Search for transient gravitational wave signals associated with magnetar bursts during Advanced LIGO's second observing run

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LIGO-P1800165-v14
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P - Publications
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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 ($$h_{\text{rss}}$$) from incoming intermediate-duration gravitational waves ranging from $$1.1 \times 10^{-22}$$ at 150\,Hz to $$4.4 \times 10^{-22}$$ 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 $$3.4 \times 10^{44} \text{erg}$$ 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 $$2.1 \times 10^{44} \,\text{erg}$$ for short white noise bursts, and $$2.3\times 10^{47}\,\text{erg}$$ for $$100 \, \text{ms}$$ long ringdowns at 1500\,Hz, both at 50\% detection efficiency.
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Publication Information:
https://arxiv.org/abs/1902.01557

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