X-ray upper limits of GW150914 with MAXI. (8th November 2017)

• Record Type: Journal Article
• Authors: Kawai, Nobuyuki; Negoro, Hitoshi; Serino, Motoko; Mihara, Tatehiro; Tanaka, Kazuki; Masumitsu, Takahiro; Nakahira, Satoshi
• Is Part Of: Publications of the Astronomical Society of Japan. Volume 69:Number 6(2017:Dec.)
• Publication Date: 2017-11-08
• Subjects: gravitational waves -- methods: observational -- X-rays: general; Astronomy -- Periodicals; 520.5
• DOI: 10.1093/pasj/psx085
• Languages: English
• ISSNs: 0004-6264

Abstract

Abstract: We searched for X-ray candidates for the gravitational wave (GW) event GW150914 with Monitor of All-sky X-ray Image (MAXI). MAXI observed the error region of the GW event GW150914 from 4 min after the event and covered about 90% of the error region in 25 min. No significant time variations on timescales of 1 s to 4 d were found in the GW error region. The 3 σ upper limits for the X-ray emission associated with the GW event in 2–20 keV were 9.5 × 10 −10, 2.3 × 10 −10, and 0.8 × 10 −10 erg cm −2 s −1 for the time scales of ∼1000 s, 1 d, and 10 d, respectively. If GW events are associated with short gamma-ray bursts like GRB 050709, MAXI will be able to detect X-ray emissions from the source.