[vsnet-grb-info 23230] LIGO/Virgo S190814bv: Coverage and upper limits from MAXI/GSC observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  25329
SUBJECT: LIGO/Virgo S190814bv: Coverage and upper limits from MAXI/GSC observations
DATE:    19/08/15 07:34:39 GMT
FROM:    Mutsumi Sugizaki at Tokyo Tech./MAXI  <sugizaki.mutsumi at gmail.com>

M. Sugizaki, N. Kawai (Tokyo Tech), H. Negoro (Nihon U.),
S. Sugita, M. Serino (AGU),
M. Nakajima, W. Maruyama, M. Aoki, K. Kobayashi (Nihon U.),
T. Mihara, T. Tamagawa, M. Matsuoka (RIKEN),
T. Sakamoto, H. Nishida, A. Yoshida (AGU),
Y. Tsuboi, W. Iwakiri, R. Sasaki, H. Kawai, T. Sato (Chuo U.),
M. Shidatsu (Ehime U.), M. Oeda, K. Shiraishi (Tokyo Tech),
S. Nakahira, Y. Sugawara, S. Ueno, H. Tomida, M. Ishikawa,
N. Isobe, R. Shimomukai, M. Tominaga (JAXA),
Y. Ueda, A. Tanimoto, S. Yamada, S. Ogawa, K. Setoguchi,
T. Yoshitake (Kyoto U.),
H. Tsunemi, T. Yoneyama, K. Asakura, S. Ide (Osaka U.),
M. Yamauchi, S. Iwahori, Y. Kurihara, K. Kurogi, K. Miike (Miyazaki U.),
T. Kawamuro (NAOJ), K. Yamaoka (Nagoya U.), Y. Kawakubo (LSU)
report on behalf of the MAXI team:


We examined MAXI/GSC all-sky X-ray images (2-20 keV) after the LVC
trigger S190814bv at 2019-08-14 21:10:39.013 UTC (GCN #25324).
At the trigger time of S190814bv, the high-voltage of MAXI/GSC was off,
and it was turned on at T0+616 sec (+10.3 min).

The first scan observation with GSC after the event covered 100% of the 90%
credible region of the bayestar skymap from 02:17:32 to 02:19:27 UTC
(T0+18413 to T0+18528 sec).

The first GSC scan covering the whole 90% credible region of the bayestar
skymap was made from 02:17:32 to 02:19:27 UTC
(T0+18413 to T0+18528 sec).

No significant new source was found in the region in the one-orbit
scan observation.
A typical 1-sigma averaged upper limit obtained in one scan observation
is 20 mCrab at 2-20 keV.

If you require information about X-ray flux by MAXI/GSC at specific coordinates,
please contact the submitter of this circular by email.