MAXI/GSC detection of a large X-ray flare from AT Mic (dMe star)
ATel #5661; M. Higa, Y. Tsuboi, A. Kawagoe, (Chuo U.), H. Negoro (Nihon U.), S. Nakahira (JAXA), A. Yoshikawa (RIKEN), S. Ueno, H. Tomida, M. Kimura, M. Ishikawa, Y. E. Nakagawa (JAXA), T. Mihara, M. Sugizaki, M. Morii, M. Serino, J. Sugimoto, T. Takagi, M. Matsuoka (RIKEN), N. Kawai, R. Usui, T. Yoshii, Y. Tachibana (Tokyo Tech), A. Yoshida, T. Sakamoto, Y. Nakano, Y. Kawakubo, H. Ohtsuki (AGU), H. Tsunemi, M. Sasaki (Osaka U.), M. Nakajima, K. Fukushima, T. Onodera, K. Suzuki (Nihon U.), Y. Ueda, M. Shidatsu, T. Kawamuro, T. Hori (Kyoto U.), M. Yamauchi, K. Yoshidome, Y. Ogawa, H. Yamada (Miyazaki U.), K. Yamaoka (Nagoya U.) report on behalf of the MAXI team
on 14 Dec 2013; 10:30 UT
Credential Certification: Yohko Tsuboi (tsuboi@phys.chuo-u.ac.jp)
Subjects: X-ray, Binary, Star
MAXI/GSC detected a large X-ray flare from AT Mic at 2013-12-13 23:03 (UT) (= MJD 56639.9605) with a flux of 190 mCrab (2-20 keV). The spectrum can be fitted by an optically thin thermal plasma model ("mekal") with a temperature of 10 keV.
Assuming a distance of 10.2 pc and the best-fit spectral parameters, the luminosity is estimated to be 8e+31 ergs/s (2-20 keV). This flare from AT Mic is the 3rd detection with MAXI/GSC, and is the largest among the three flares.
