MAXI/GSC detects renewed activity from MAXI J1820+070
ATel #13530; R. Sasaki (Chuo U.), H. Negoro (Nihon U.), S, Nakahira (JAXA), M. Shidatsu (Ehime U.), M. Nakajima, W. Maruyama, M. Aoki, K. Kobayashi, R. Takagi (Nihon U.), T. Mihara, C. Guo, Y. Zhou, T. Tamagawa, M. Matsuoka (RIKEN), T. Sakamoto, M. Serino, S. Sugita, H. Nishida, A. Yoshida (AGU), Y. Tsuboi, W. Iwakiri, H. Kawai, T. Sato (Chuo U.), N. Kawai, M. Oeda, K. Shiraishi (Tokyo Tech), Y. Sugawara, S. Ueno, H. Tomida, M. Ishikawa, R. Shimomukai, M. Tominaga (JAXA), Y. Ueda, A. Tanimoto, S. Yamada, S. Ogawa, K. Setoguchi, T. Yoshitake (Kyoto U.), H. Tsunemi, T. Yoneyama, K. Asakura, S. Ide (Osaka U.), M. Yamauchi, S. Iwahori, Y. Kurihara, K. Kurogi, K. Miike (Miyazaki U.), T. Kawamuro (NAOJ), K. Yamaoka (Nagoya U.), Y. Kawakubo (LSU), M. Sugizaki (NAOC)
on 28 Feb 2020; 01:04 UT
Credential Certification: Satoshi NAKAHIRA (nakahira@crab.riken.jp)
Subjects: X-ray, Binary, Black Hole, Transient
Referred to by ATel #: 14492
We report on the detection of the black hole X-ray binary MAXI J1820+070 = ASASSN-18ey
(e.g. ATel #11399, #11400) with MAXI/GSC.
Following the recent optical rebrightening reported by Adachi et al. (ATel #13502), the MAXI/GSC nova alert system (Negoro et al. 2016) detected an X-ray flux increase of the source at 12:31 UT on 2020 February 27 in the one-day time-bin.
The X-ray flux in the 2-10 keV band was 16 ± 3 mCrab (1 sigma error) on February 27.
Follow-up observations are encouraged.
