アキタヤ　ヒロシ   秋田谷　洋    所属   千葉工業大学  天文学研究センター 天文学研究センター    職種   上席研究員
言語種別	英語
発行・発表の年月	2021/08/01
形態種別	学術雑誌
標題	Origins of the Long-term Variability of the Near-infrared Emission of the Black Hole X-Ray Binary GRS 1915+105 in the X-Ray Low Luminous State
執筆形態	共著
掲載誌名	The Astrophysical Journal
掲載区分	国外
出版社・発行元	American Astronomical Society
巻・号・頁	916(2),pp.114
著者・共著者	Fumiya Imazato, Mahito Sasada, Makoto Uemura, Yasushi Fukazawa, Hiromitsu Takahashi, Tatsuya Nakaoka, Hiroshi Akitaya, Koji S. Kawabata, Masanori Akimoto, Kenta Fujisawa
概要	Since 2018 July, the black hole X-ray binary GRS 1915+105 has been in an X-ray low luminous state (XLLS), which is the faintest period ever observed in a soft X-ray band. We present here the results of near-infrared (NIR) observations from 2019 April–December in the XLLS using HONIR attached to the Kanata telescope, together with radio data obtained by the Yamaguchi Interferometer and archival X-ray data. We found the historical NIR brightening in the XLLS.
DOI	10.3847/1538-4357/ac07a3
ISSN	0004637X
NAID	1360857593653603456