MAXI/GSC detection of a large X-ray flare from Algol
ATel #4841; T. Takagi (RIKEN), M. Higa, Y. Tsuboi (Chuo U.), H. Negoro (Nihon U.), S. Nakahira (JAXA), N. Kawai (Tokyo Tech), M. Matsuoka (RIKEN), S. Ueno, H. Tomida, M. Kimura, M. Ishikawa (JAXA), M. Sugizaki, M. Serino, K. Morihana, T. Yamamoto, J. Sugimoto, T. Mihara (RIKEN), M. Morii, R. Usui, K. Ishikawa (Tokyo Tech), A. Yoshida, T. Sakamoto, Y. Nakano (AGU), H. Tsunemi, M. Sasaki (Osaka U.), M. Nakajima, M. Asada (Nihon U.), Y. Ueda, K. Hiroi, M. Shidatsu, R. Sato, T. Kawamuro (Kyoto U.), M. Yamauchi, Y. Nishimura, T. Hanayama, K. Yoshidome, Y. Ogawa (Miyazaki U.), K. Yamaoka (ISAS) report on behalf of the MAXI team
on 26 Feb 2013; 11:06 UT
Credential Certification: Hitoshi Negoro (negoro@phys.cst.nihon-u.ac.jp)
Subjects: X-ray, Binary, Variables
MAXI/GSC detected a large X-ray flare from Algol at 2013-02-22 03:43 (UT)
(= MJD 56345.155) with a flux of 160 mCrab (2-20 keV).
The spectrum can be fitted by an optically thin thermal plasm model
("mekal") with a temperature of 17 keV (90% confidence limit >6 keV).
Assuming a distance of 28.5 pc and the best-fit spectral parameters,
the luminosity is estimated to be 5.1e32 ergs/s (2-20 keV).
This flare from Algol is the 5th of the detections by MAXI/GSC, and is
the largest among them.
Previous MAXI detections of flares from Algol were reported in ATel
#3096, #3809, #4656.
alert information on this flare
