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Gravitational waves from transient neutron star ƒ-mode oscillations

Gravitational waves from transient neutron star ƒ-mode oscillations
Gravitational waves from transient neutron star ƒ-mode oscillations
During their most recent observing run, LIGO/Virgo reported the gravitational wave (GW) transient S191110af, a burst signal at a frequency of 1.78 kHz that lasted for 0.104 s. While this signal was later deemed non-astrophysical, genuine detections of uncertain origin will occur in the future. Here we study the potential for detecting GWs from neutron star fluid oscillations, which have mode frequency and duration matching those of S191110af and which can be used to constrain the equation of state of nuclear matter. Assuming that such transient oscillations can be excited to energies typical of a pulsar glitch, we use measured properties of known glitching pulsars to estimate the amplitude of GWs produced by such events. We find that current GW detectors may observe nearby pulsars undergoing large events with energy similar to Vela pulsar glitch energies, while next generation detectors could observe a significant number of events. Finally, we show that it is possible to distinguish between GWs produced by rapidly rotating and slowly rotating pulsars from the imprint of rotation on the f-mode frequency.
2470-0010
103009-6
Ho, Wynn C.G.
d78d4c52-8f92-4846-876f-e04a8f803a45
Jones, D.I.
b8f3e32c-d537-445a-a1e4-7436f472e160
Andersson, Nils
2dd6d1ee-cefd-478a-b1ac-e6feedafe304
Espinoza, Cristobal M.
505d9674-e6db-4fa6-bcb3-5365b2d8121c
Ho, Wynn C.G.
d78d4c52-8f92-4846-876f-e04a8f803a45
Jones, D.I.
b8f3e32c-d537-445a-a1e4-7436f472e160
Andersson, Nils
2dd6d1ee-cefd-478a-b1ac-e6feedafe304
Espinoza, Cristobal M.
505d9674-e6db-4fa6-bcb3-5365b2d8121c

Ho, Wynn C.G., Jones, D.I., Andersson, Nils and Espinoza, Cristobal M. (2020) Gravitational waves from transient neutron star ƒ-mode oscillations. Physical Review D, 101 (10), 103009-6, [103009]. (doi:10.1103/PhysRevD.101.103009).

Record type: Article

Abstract

During their most recent observing run, LIGO/Virgo reported the gravitational wave (GW) transient S191110af, a burst signal at a frequency of 1.78 kHz that lasted for 0.104 s. While this signal was later deemed non-astrophysical, genuine detections of uncertain origin will occur in the future. Here we study the potential for detecting GWs from neutron star fluid oscillations, which have mode frequency and duration matching those of S191110af and which can be used to constrain the equation of state of nuclear matter. Assuming that such transient oscillations can be excited to energies typical of a pulsar glitch, we use measured properties of known glitching pulsars to estimate the amplitude of GWs produced by such events. We find that current GW detectors may observe nearby pulsars undergoing large events with energy similar to Vela pulsar glitch energies, while next generation detectors could observe a significant number of events. Finally, we show that it is possible to distinguish between GWs produced by rapidly rotating and slowly rotating pulsars from the imprint of rotation on the f-mode frequency.

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2003.12082 - Accepted Manuscript
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Accepted/In Press date: 26 March 2020
e-pub ahead of print date: 6 May 2020
Published date: 15 May 2020

Identifiers

Local EPrints ID: 439099
URI: http://eprints.soton.ac.uk/id/eprint/439099
ISSN: 2470-0010
PURE UUID: c0a02d76-0dac-4ad9-b93c-76456c981c0a
ORCID for Wynn C.G. Ho: ORCID iD orcid.org/0000-0002-6089-6836
ORCID for D.I. Jones: ORCID iD orcid.org/0000-0002-0117-7567
ORCID for Nils Andersson: ORCID iD orcid.org/0000-0001-8550-3843

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Date deposited: 03 Apr 2020 16:30
Last modified: 26 Nov 2021 06:32

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Contributors

Author: Wynn C.G. Ho ORCID iD
Author: D.I. Jones ORCID iD
Author: Nils Andersson ORCID iD
Author: Cristobal M. Espinoza

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