GCN Circular 24153
Subject
LIGO/Virgo S190421ar: MAXI/GSC Observations
Date
2019-04-23T05:58:11Z (5 years ago)
From
Motoko Serino at RIKEN/MAXI <motoko@crab.riken.jp>
M. Serino, S. Sugita (AGU), H. Negoro (Nihon U.), M. Sugizaki, N. Kawai (Tokyo Tech),
M. Nakajima, W. Maruyama, M. Aoki, K. Kobayashi (Nihon U.),
S. Nakahira, 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.),
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
S190421ar at 2019-04-21 21:38:56 UTC (GCN 24141).
At the trigger time of S190421ar, the high-voltage of MAXI/GSC was on,
and it was turned off at T0+78 sec.
The one-orbit (92 min) scan of GSC covered 63% of the 90% error region
of the bayestar skymap from 21:38:56 to 23:10:54 UTC (T0 to T0+5518 sec).
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 18 mCrab at 4-10 keV.
If you require information of X-ray flux by MAXI/GSC at specific coordinates,
please contact the submitter of this circular by email.
--
Motoko SERINO <motoko@crab.riken.jp>