The Astronomer's Telegram
Telegram Index | Search
To The Parent Site

[ Previous | Next ]


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
Password Certification: Mutsumi Sugizaki (sugizaki@riken.jp)

Subjects: X-ray, Binaries, Neutron Stars, Pulsars
Referred to by ATEL #: 3077

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


[ Telegram Index ]

R. E. Rutledge , Editor
ATEL Mirror v1.0 Updates