2017/08/04 by Motoko Serino, Nobuyuki Kawai, Hitoshi Negoro +3
Physics and Astronomy · #Astrophysical Phenomena and Observations #Event (particle physics) #Gamma-ray bursts and supernovae #Limit (mathematics) #Magnitude (astronomy) #Orbit (dynamics) #Pulsars and Gravitational Waves Research #Sensitivity (control systems) #Transient (computer programming) #astro-ph.HE
paper · pdf · doi:10.1093/pasj/psx086
7 pages, 8 figures
arxiv created 2017/08/04 · openalex publication_date 2017/08/09 · arxiv updated 2017/12/20 · openalex created_date 2019/03/02 · openalex updated_date 2026/08/05
Abstract The error region of the the gravitational-wave (GW) event GW151226 was observed with Monitor of All-sky X-ray Image (MAXI). MAXI was operating at the time of GW151226, and continuously observed up to 4 min after the event. MAXI covered about 84% of the 90% error region of the GW event during the first 92 min orbit after the event. No significant X-ray transient was detected in the GW error region. A typical 3 σ Gas Slit Camera upper limit for a scan is 1.2 × 10−9 erg cm−2 s−1 in the 2–20 keV band. The autodetection (MAXI nova-search) systems detected a short excess event with a low significance (2.85 σ) from 5257 s to 5260 s after the GW trigger. Finally, we discuss the sensitivity of MAXI to long X-ray emissions of short gamma-ray bursts, which are expected to accompany GW events.