TITLE: GCN CIRCULAR NUMBER: 21494 SUBJECT: LIGO/Virgo G297595 : MAXI/GSC observations DATE: 17/08/16 07:35:43 GMT FROM: Satoshi Sugita at Tokyo Inst. of Tech. S. Sugita, N. Kawai (Tokyo Tech), M. Serino (RIKEN), H. Negoro (Nihon U.), S. Ueno, H. Tomida, M. Ishikawa, Y. Sugawara, N.Isobe, R. Shimomukai (JAXA), T. Mihara, M. Sugizaki, S. Nakahira, W. Iwakiri, M. Shidatsu, M. Matsuoka (RIKEN), T. Yoshii, Y. Tachibana, S. Harita, Y. Muraki, K. Morita (Tokyo Tech), A. Yoshida, T. Sakamoto, Y. Kawakubo, Y. Kitaoka, T. Hashimoto (AGU), H. Tsunemi, T. Yoneyama (Osaka U.), M. Nakajima, T. Kawase, A. Sakamaki (Nihon U.), Y. Ueda, T. Hori, A. Tanimoto, S. Oda (Kyoto U.), Y. Tsuboi, Y. Nakamura, R. Sasaki (Chuo U.), M. Yamauchi, C. Hanyu, K, Hidaka (Miyazaki U.), T. Kawamuro (NAOJ), K. Yamaoka (Nagoya U.) report on behalf of the MAXI team: We examined the MAXI/GSC all-sky X-ray images (2-20 keV) obtained in the orbit and the day after the LVC trigger G297595 at 2017-08-14 10:30:43 UTC (GCN 21474). At the trigger time of G297595, the high-voltage of MAXI/GSC was off, and it was turned on at T0+473 sec. GSC scanned more than 74.1% of the whole sky in the 92-min orbit, which includes 100% of the 90% region in the bayestar skymap scanned from 10:56:11 to 10:59:42 UTC (T0+1528 to 1739 sec). No significant new source was found in one-orbit and one-day images. The 2-20 keV 1-sigma (3-sigma) averaged upper limits obtained from the one-orbit and the one-day images in the bayestar skymap are 11(33) and 3(9) mCrab, respectively. If you require information of X-ray flux by MAXI/GSC at specific coordinates, please contact the submitter of this circular by email.