MAXI/GSC detection of an X-ray burst from 1A 1246-588
ATel #3482; M. Serino, T. Mihara, M. Sugizaki, S. Nakahira, T. Yamamoto, T. Sootome, M. Matsuoka (RIKEN), S. Ueno, H. Tomida, M. Kohama, M. Ishikawa (JAXA), N. Kawai, M. Morii, K. Sugimori, R. Usui, T. Toizumi (Tokyo Tech), A. Yoshida, K. Yamaoka (AGU), H. Tsunemi, M. Kimura, H. Kitayama (Osaka U.), H. Negoro, M. Nakajima, F. Suwa (Nihon U.), Y. Ueda, K. Hiroi, M. Shidatsu (Kyoto U.), Y. Tsuboi, T. Matsumura, K. Yamazaki (Chuo U.) report on behalf of the MAXI team
on 11 Jul 2011; 03:13 UT
Credential Certification: Motoko Suzuki (motoko@crab.riken.jp)
Subjects: X-ray, Binary, Neutron Star
Referred to by ATel #: 13305
MAXI/GSC detected a bright X-ray burst from 1A 1246-588
at UT 2011/07/07 08:02:56. The burst lasted at least 66s.
The peak flux was estimated to be 3.4 Crab (4-10 keV).
At the time of the next transit (~20 min after the burst), the source
flux had already decayed to the normal level.
Its one-day average flux was 4+/- 3mCrab before the burst,
and stayed at 5+/- 3 mCrab after it. These values are consistent
with the 23 months average flux of 6 mCrab.
X-ray bursts from this source have been detected by RXTE and Swift in 2006
(ATel #830, Levine et al.; ATel #837, Kuulkers & Levine;
GCN #5436 Romano et al.; ATel #875, Kong).
The latest light curves and images by MAXI/GSC are found at the following URL:
http://maxi.riken.jp/top/index.php?cid=1&jname=J1249-590
