XRISM Observations of Orbital-phase-dependent Fe Kα Emission Using High-resolution X-Ray Spectroscopy in the Wind-fed High-mass X-Ray Binary 4U 1700–37

We report the first XRISM observations of the wind-fed high-mass X-ray binary 4U 1700–37, focusing on the orbital-phase dependence of the Fe K α fluorescence line. The observation, conducted over a ∼1.4 day interval in 2025 February, spans approximately 40% of the 3.4 day orbital period and provides...

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Auteurs principaux:	Seoru Ito, Shinya Yamada, Kaito Ninoyu, Yuusuke Uchida, Takayoshi Kohmura, Ryota Hayakawa, Shunji Kitamoto, Nao Kominato, Yusuke Sakai, Shintaro Kaneko, Misaki Mizumoto, Toru Tamagawa, Keisuke Uchiyama, Toshiki Sato
Format:	Artigo
Langue:	Inglês
Publié:	IOP Publishing 2026-01-01
Collection:	The Astrophysical Journal Letters
Sujets:	Accretion X-ray binary stars
Accès en ligne:	https://doi.org/10.3847/2041-8213/ae562e
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