2020/08/10 by Surabhi Sachdev, Ryan Magee, Chad Hanna +28 · 1 voice
Engineering · Physics and Astronomy · #Astronomical Observations and Instrumentation #Detector #Event (particle physics) #Gamma-ray bursts and supernovae #Gravitational wave #Interferometry #Neutron star #Observatory #Pulsars and Gravitational Waves Research #Sensitivity (control systems) #astro-ph.HE #gr-qc
paper · pdf · doi:10.3847/2041-8213/abc753
small update in numbers caused by using a more updated local BNS rate estimate
arxiv published 2020/08/10 · openalex created_date 2020/08/13 · arxiv created 2020/09/08 · openalex publication_date 2020/12/01 · arxiv updated 2021/01/06 · openalex updated_date 2026/08/06
Abstract Binary neutron stars (BNSs) will spend ≃10–15 minutes in the band of Advanced Laser Interferometer Gravitational-Wave Observatory (LIGO) and Virgo detectors at design sensitivity. Matched-filtering of gravitational-wave (GW) data could in principle accumulate enough signal-to-noise ratio (S/N) to identify a forthcoming event tens of seconds before the companions collide and merge. Here we report on the design and testing of an early-warning GW detection pipeline. Early-warning alerts can be produced for sources that are at low enough redshift so that a large enough S/N accumulates ∼10–60 s before merger. We find that about 7% (49%) of the total detectable BNS mergers will be detected 60 s (10 s) before the merger. About 2% of the total detectable BNS mergers will be detected before merger and localized to within 100 deg 2 (90% credible interval). Coordinated observing by several wide-field telescopes could capture the event seconds before or after the merger. LIGO–Virgo detectors at design sensitivity could facilitate observing at least one event at the onset of merger.