Swift-BAT GUANO follow-up of gravitational-wave triggers in the third LIGO-Virgo-KAGRA observing run
We present results from a search for X-ray/gamma-ray counterparts of gravitational-wave (GW) candidates from the third observing run (O3) of the LIGO-Virgo-KAGRA (LVK) network using the Swift Burst Alert Telescope (Swift-BAT). The search includes 636 GW candidates received in low latency, 86 of whic...
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | We present results from a search for X-ray/gamma-ray counterparts of
gravitational-wave (GW) candidates from the third observing run (O3) of the
LIGO-Virgo-KAGRA (LVK) network using the Swift Burst Alert Telescope
(Swift-BAT). The search includes 636 GW candidates received in low latency, 86
of which have been confirmed by the offline analysis and included in the third
cumulative Gravitational-Wave Transient Catalogs (GWTC-3). Targeted searches
were carried out on the entire GW sample using the maximum--likelihood NITRATES
pipeline on the BAT data made available via the GUANO infrastructure. We do not
detect any significant electromagnetic emission that is temporally and
spatially coincident with any of the GW candidates. We report flux upper limits
in the 15-350 keV band as a function of sky position for all the catalog
candidates. For GW candidates where the Swift-BAT false alarm rate is less than
10$^{-3}$ Hz, we compute the GW--BAT joint false alarm rate. Finally, the
derived Swift-BAT upper limits are used to infer constraints on the putative
electromagnetic emission associated with binary black hole mergers. |
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DOI: | 10.48550/arxiv.2407.12867 |