Skip to main content
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 18557

Subject
LIGO/Virgo G194575: MAXI/GSC further analysis
Date
2015-11-04T06:26:10Z (9 years ago)
From
Nobuyuki Kawai at Tokyo Tech/MAXI <nkawai@phys.titech.ac.jp>
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 analyzed the MAXI/GSC all-sky X-ray data (2-10 keV) for the two days
following the LVC trigger G194575 (Singer et al. GCN 18442).

We did not detect new sources in the LIGO candidate regions.
The 3-sigma upper limits are shown below for the two 24-hour 
integrations after the trigger.

Region Center   0-24h     24h-48h
------------  ---------  ----------
(13h,  -15.)   8 mCrab     9 mCrab  
(13.5h, -5.)   8 mCrab     9 mCrab  
(01h,   +5.)  12 mCrab    12 mCrab  
------------  ---------  ----------

As in the previous report for the single orbit image (Serino et al. 
GCN 18467), about half of the candidate region around 13h in R.A. 
and half of the region around 13.5h were not observed to avoid the sun.
Looking for U.S. government information and services? Visit USA.gov