期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 489, 期 1, 页码 L75-L79出版社
OXFORD UNIV PRESS
DOI: 10.1093/mnrasl/slz129
关键词
gravitational waves; methods: observational; stars: neutron; radio continuum: transients
资金
- Australian Research Council Discovery Early Career Researcher Award [DE180100346]
- Australian Research Council Centre of Excellence for Gravitational Wave Discovery (OzGrav) [CE170100004]
- US National Science Foundation
- Italian Istituto Nazionale della Fisica Nucleare (INFN)
- French Centre National de Recherche Scientifique (CNRS)
- Dutch Nikhef
- Polish institute
- Hungarian institute
- Australian Research Council [DE180100346] Funding Source: Australian Research Council
We examine how fast radio burst (FRB)-like signals predicted to be generated during the merger of a binary neutron star (BNS) may be detected in low-frequency radio observations triggered by the aLIGO/Virgo gravitational-wave detectors. The rapidity, directional accuracy, and sensitivity of follow-up observations with the Murchison Widefield Array (MWA) are considered. We show that with current methodology, the rapidity criterion fails for triggered MWA observations above 136 MHz for BNS mergers within the aLIGO/Virgo horizon, for which little dispersive delay is expected. A calculation of the expected reduction in response time by triggering on 'negative latency' alerts from aLIGO/Virgo observations of gravitational waves generated by the BNS inspiral is presented. This allows for observations up to 300 MHz where the radio signal is expected to be stronger. To compensate for the poor positional accuracy expected from these alerts, we propose a new MWA observational mode that is capable of viewing one-quarter of the sky. We show the sensitivity of this mode is sufficient to detect an FRB-like burst from an event similar to GW 170817 if it occurred during the ongoing aLIGO/Virgo third science run (O3).
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