MAXI/GSC detects X-ray brightening from XTE J1946+274
ATel #3048; M. Nakajima (Nihon U.), T. Mihara, Y. E. Nakagawa, M. Serino, M. Sugizaki, T. Yamamoto, T. Sootome, M. Matsuoka (RIKEN), H. Negoro, H. Ozawa, F. Suwa (Nihon U.), N. Kawai , M. Morii, K. Sugimori, R. Usui (Tokyo Tech), S. Ueno, H. Tomida, M. Kohama, M. Ishikawa (JAXA), A. Yoshida, K. Yamaoka, S. Nakahira (AGU), H. Tsunemi, M. Kimura, H. Kitayama (Osaka U.), Y. Ueda, N. Isobe, S. Eguchi, K. Hiroi, M. Shidatsu (Kyoto U.), T. Matsumura, K. Yamazaki, A. Uzawa (Chuo U.), A. Daikyuji (Miyazaki U.) report on behalf of the MAXI team
on 22 Nov 2010; 12:52 UT
Credential Certification: Mutsumi Sugizaki (sugizaki@riken.jp)
Subjects: X-ray, Binary, Neutron Star, Pulsar
Following the previous outbursts (Atel #2663, #2677, #2692, #2847),
MAXI/GSC detects a renewed X-ray brightening from Be/X-ray transient
pulsar XTE J1946+274. The source flux started to increase on
2010-Nov-15 (MJD 55515),and reached 33 mCrab (4-10 keV) on 2010-Nov-19
(MJD 55519).
This corresponds to the third outburst detected by MAXI/GSC from
this source since the previous major outburst started on
2010-Jun-04 (MJD 55351) (Atel #2663). The source is known to
exhibit two outbursts during one orbital cycle of 169.2
days (Wilson et al. 2003). The current outburst can be considered
as "main outburst" which will occurred near the periastron
passage.
The latest light curve is available at the following URL:
http://maxi.riken.jp/top/index.php?cid=1&jname=J1945+273
