Correction to ATel 14663 and the recent time evolution of the X-ray flux from 4U 1705-32
ATel #14670; H. Negoro, M. Nakajima (Nihon U.), W. Iwakiri (Chuo U.), M. Ishikawa (JAXA), K. Kobayashi, K. Asakura, K. Seino (Nihon U.), T. Mihara, T. Tamagawa, M. Matsuoka (RIKEN), T. Sakamoto, M. Serino, S. Sugita, K. Komachi, A. Yoshida (AGU), Y. Tsuboi, H. Kawai, Y. Okamoto, S. Kitakoga (Chuo U.), M. Shidatsu (Ehime U.), N. Kawai, M. Niwano, R. Hosokawa (Tokyo Tech), S. Nakahira, Y. Sugawara, S. Ueno, H. Tomida, M. Tominaga, T. Nagatsuka (JAXA), Y. Ueda, S. Yamada, S. Ogawa, K. Setoguchi, T. Yoshitake, Y. Goto, R. Uematsu (Kyoto U.), H. Tsunemi (Osaka U.), M. Yamauchi, Y. Nonaka, T. Sato, R. Hatsuda, R. Fukuoka (Miyazaki U.), T. Kawamuro (UDP/NAOJ), K. Yamaoka (Nagoya U.), Y. Kawakubo (LSU), M. Sugizaki (NAOC) report on behalf of the MAXI team:
on 30 May 2021; 14:34 UT
Credential Certification: Hitoshi Negoro (negoro@phys.cst.nihon-u.ac.jp)
Subjects: Neutron Star, Transient
We further report on the time evolution of the X-ray flux from the low-mass X-ray binary 4U 1705-32, which brightened rapidly on May 24 (Negoro et al. ATel #14663, Bult et al. ATel #14669). MAXI/GSC data show that the 4-10 keV X-ray flux started decreasing prior to the 2-4 keV X-ray flux on May 25, implying a soft state transition (#14663), and the 2-4 keV X-ray flux rapidly decreased on May 27. The 2-10 keV flux was below the 1-day detection of about 5 mCrab (1-sigma) on May 28 as reported by Bult et al. (ATel #14669). At 23:49 on May 29, the MAXI/GSC nova alert system triggered on the source again, and we confirmed the 4-10 keV flux increased to about 30 mCrab. The 2-4 keV flux is not significantly detected, yet.
All the months written in ATel #14663 should be May, not March. We apologize for any inconvenience caused by our mistake.
MAXI trigger information on 4U 1705-32
