[vsnet-grb-info 22012] LIGO/Virgo S190412m: MAXI/GSC Observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  24111
SUBJECT: LIGO/Virgo S190412m: MAXI/GSC Observations
DATE:    19/04/12 16:43:33 GMT
FROM:    Satoshi Sugita at Aoyama Gakuin U.  <sugita at phys.aoyama.ac.jp>

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

We examined the MAXI/GSC all-sky X-ray images (2-20 keV) obtained
in the orbit after the LVC trigger
S190412m at 2019-04-12 05:31:03 UTC (GCN 24098).

At the trigger time of S190412m, the high-voltage of MAXI/GSC was off,
and it was turned on at T0+175 sec.
The one-orbit (92 min) scan of GSC covered 93.2% of the 90% error region
of the bayestar skymap from 06:30:50 to 06:39:52 UTC (T0+3587 to 4129 sec).
The scan was mainly performed by the degraded GSC_3 camera.
No significant new source was found in the error region at the one-orbit scan.
The 1-sigma averaged upper limit obtained
from the scan was 66 mCrab at 2-20 keV.

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