TITLE: GCN CIRCULAR NUMBER: 18467 SUBJECT: LIGO/Virgo G194575: MAXI/GSC observations DATE: 15/10/24 14:26:23 GMT FROM: Nobuyuki Kawai at Tokyo Tech/MAXI M. Serino (RIKEN), H. Negoro (Nihon U.), N. Kawai (Tokyo Tech), S. Ueno, H. Tomida, S. Nakahira, M. Kimura, M. Ishikawa, Y. E. Nakagawa (JAXA), T. Mihara, M. Sugizaki, M. Shidatsu, J. Sugimoto, T. Takagi, M. Matsuoka (RIKEN), M. Arimoto, T. Yoshii, Y. Tachibana, Y. Ono, T. Fujiwara (Tokyo Tech), A. Yoshida, T. Sakamoto, Y. Kawakubo, H. Ohtsuki (AGU), H. Tsunemi, R.Imatani (Osaka U.), M. Nakajima, K. Tanaka, T. Masumitsu (Nihon U.), Y. Ueda, T. Kawamuro, T. Hori (Kyoto U.), Y. Tsuboi, S. Kanetou (Chuo U.), M. Yamauchi, D. Itoh (Miyazaki U.), K. Yamaoka (Nagoya U.), M. Morii (ISM) report on behalf of the MAXI team: We examined the MAXI/GSC all-sky X-ray image (2-10 keV) obtained in the orbit immediately following the LVC trigger G194575 (Singer et al. GCN 18442). Due to proximity to the sun, about half of the candidate region around 13h in R.A. and half of the region around 13.5h were not observed. We did not detect new sources with the following upper limits for the 2-10 keV X-ray flux in the these regions examined. The scan transit times of the centers of these regions are also shown. Region Center Transit UT 3-sigma UL ------------ ---------- ---------- (13h, -15.) 14:01:01 23 mCrab (13.5h, -5.) 14:06:53 22 mCrab (01h, +5.) 14:50:55 29 mCrab ------------ ---------- ----------