The XRISM/Resolve View of the Fe K Region of Cyg X-3

Abstract The X-ray binary system Cygnus X-3 (4U 2030+40, V1521 Cyg) is luminous but enigmatic owing to the high intervening absorption. High-resolution X-ray spectroscopy uniquely probes the dynamics of the photoionized gas in the system. In this Letter, we report on an observation of Cyg X-3 with the XRISM/Resolve spectrometer, which provides unprecedented spectral resolution and sensitivity in the 2–10 keV band. We detect multiple kinematic and ionization components in absorption and emission whose superposition leads to complex line profiles, including strong P Cygni profiles on resonance lines. The prominent Fe xxv He α and Fe xxvi Ly α emission complexes are clearly resolved into their characteristic fine-structure transitions. Self-consistent photoionization modeling allows us to disentangle the absorption and emission components and measure the Doppler velocity of these components as a function of binary orbital phase. We find a significantly higher velocity amplitude for the emission lines than for the absorption lines. The absorption lines generally appear blueshifted by ∼−500–600 km s −1 . We show that the wind decomposes naturally into a relatively smooth and large-scale component, perhaps associated with the background wind itself, plus a turbulent, denser structure located close to the compact object in its orbit.

Authors

Institutions

Publication Details

Journal
The Astrophysical Journal Letters
Published
2024-12-11
DOI
https://doi.org/10.3847/2041-8213/ad8ed0
Citations
10
Primary Topic
Astrophysical Phenomena and Observations
Type
article
Field-Weighted Citation Impact
3.32

Funders

Controls
|||
ALL TIME
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
article

The XRISM/Resolve View of the Fe K Region of Cyg X-3

Kotaro Fukushima, Lía Corrales, Chris Done, Katsuhiro Hayashi et al.
10 citations
The Astrophysical Journal Letters
Astrophysical Phenomena and Observations
3.32
article

The XRISM/Resolve View of the Fe K Region of Cyg X-3

Kotaro Fukushima, Lía Corrales, Chris Done, Katsuhiro Hayashi, Ehud Behar, Aya Kubota, Kyoko Matsushita, Kouichi Hagino, Tomohiro Hakamata, M. Shidatsu, M. Audard, J. S. Kaastra, Paul P. Plucinsky, Kazuhiro Nakazawa, Michael L. McCollough, Erin Kara, S. Eguchi, Hirokazu Odaka, Luigi Gallo, Hideki Uchiyama, Hirofumi Noda, Hisamitsu Awaki, Y. Terada, Jacco Vink, K. Mukai, María Díaz Trigo, Aya Bamba, Eric D. Miller, Yoshiaki Kanemaru, J. M. Mïller, Ryuichi Fujimoto, Satoshi Yamada, Yutaka Fujita, Javier A. García, Andrew E. Szymkowiak, Kenji Hamaguchi, Takayuki Hayashi, T. R. Kallman, Anna Ogorzałek, A. Simionescu, Megan E. Eckart, S. Paltani, Daiki Miura, Edmund Hodges‐Kluck, Renata Cumbee, Hiroyuki Uchida, Hironori Matsumoto, A. E. Hornschemeier, K. I. I. Koljonen, Irina Zhuravleva, Mai Takeo, Gregory V. Brown, Hiroya Yamaguchi, Adam Foster, Laura Brenneman, Masahiro Tsujimoto, Yoshitomo Maeda, Liyi Gu, Noriko Y. Yamasaki, D. McCammon, Toru Tamagawa, Ryota Tomaru, Shōgo Kobayashi, K. Yamaoka, Jan‐Uwe Ness, Michael Loewenstein, Hiromasa Suzuki, Naomi Ota, M. Guainazzi, Kosuke Sato, Takaaki Tanaka, Satoru Katsuda, Tsunefumi Mizuno, Randall K. Smith, Yoshihiro Ueda, M. Tashiro, M. Yamauchi, Ikuyuki Mitsuishi, Teruaki Enoto, Takeshi Go Tsuru, Isamu Hatsukade, Hiroshi Murakami, Ken Ebisawa, Maurice A. Leutenegger, Takashi Okajima, F. S. Porter, D. Eckert, Maxim Markevitch, R. F. Mushotzky, Natalie Hell, Kumiko Nobukawa, Tasuku Hayashi, Y. Fukazawa, Makoto Sawada, Ralf Ballhausen, Mihoko Yukita, B. R. McNamara, Brian J. Williams, Masayoshi Nobukawa, Misaki Mizumoto, Rozenn Boissay-Malaquin, François Mernier, K. Pottschmidt, Shunji Kitamoto, T. Yoneyama, Robert Petre, Toshiki Sato, E. Costantini, H. Takahashi, S. Yamada, Yuusuke Uchida, Yuichi Terashima, Yuto Ichinohe, A. Tanimoto, Caroline A. Kilbourne, Shoji Ogawa, Nagomi Uchida, Koji Mori, Y. Tsuboi, Shin Watanabe, Yoshitaka Ishisaki, Shinichiro Uno, Kumi Ishikawa, Hiromi Seta, Hiroshi Nakajima, Richard L. Kelley, Hiroshi Tsunemi, Akihiro Furuzawa, Yuichiro Ezoe, Keisuke Tamura, M. Ishida, Tessei Yoshida, Takayoshi Kohmura, Tadayasu Dotani, Tahir Yaqoob
article en
10 citations

Abstract

Abstract The X-ray binary system Cygnus X-3 (4U 2030+40, V1521 Cyg) is luminous but enigmatic owing to the high intervening absorption. High-resolution X-ray spectroscopy uniquely probes the dynamics of the photoionized gas in the system. In this Letter, we report on an observation of Cyg X-3 with the XRISM/Resolve spectrometer, which provides unprecedented spectral resolution and sensitivity in the 2–10 keV band. We detect multiple kinematic and ionization components in absorption and emission whose superposition leads to complex line profiles, including strong P Cygni profiles on resonance lines. The prominent Fe xxv He α and Fe xxvi Ly α emission complexes are clearly resolved into their characteristic fine-structure transitions. Self-consistent photoionization modeling allows us to disentangle the absorption and emission components and measure the Doppler velocity of these components as a function of binary orbital phase. We find a significantly higher velocity amplitude for the emission lines than for the absorption lines. The absorption lines generally appear blueshifted by ∼−500–600 km s −1 . We show that the wind decomposes naturally into a relatively smooth and large-scale component, perhaps associated with the background wind itself, plus a turbulent, denser structure located close to the compact object in its orbit.

The Astrophysical Journal LettersVol. 977(2)
Kagoshima University (JP), Hiroshima University (JP), University of Geneva (CH), University of Miyazaki (JP), Kumamoto Gakuen University (JP), Leiden University (NL), California Institute of Technology (US), Nihon Fukushi University (JP), Lawrence Livermore National Laboratory (US), Shizuoka University (JP), Goddard Space Flight Center (US), Rikkyo University (JP), University of Wisconsin–Madison (US), Johns Hopkins University (US), Fujita Health University (JP), Nara University of Education (JP), University of Waterloo (CA), Konan University (JP), Tokyo University of Science (JP), Meiji University (JP), Shibaura Institute of Technology (JP), Technion – Israel Institute of Technology (IL), Durham University (GB), Tohoku University (JP), Kanto Gakuin University (JP), Kyoto University (JP), University of Michigan (US), University of Teacher Education Fukuoka (JP), Japan Aerospace Exploration Agency (JP), Tohoku Gakuin University (JP), Yale University (US), University of Chicago (US), European Space Astronomy Centre (ES), Kavli Institute for Particle Astrophysics and Cosmology (US), RIKEN (JP), Osaka Health Science University (JP), Center for Astrophysics Harvard & Smithsonian (US), Institute of Space and Astronautical Science (JP), RIKEN Nishina Center (JP), Ehime University (JP), Leiden Observatory, European Space Research and Technology Centre (NL), Space Research Organisation Netherlands (NL), Nagoya University (JP), Massachusetts Institute of Technology (US), Saint Mary's University (CA), University of Maryland, College Park (US), Tokyo Metropolitan University (JP), Saitama University (JP), The University of Tokyo (JP), University of Maryland, Baltimore County (US), University of Amsterdam (NL), Kindai University (JP), Chuo University (JP), The University of Osaka (JP), Nara Women's University (JP)
National Science Foundation, U.S. Department of Energy, National Aeronautics and Space Administration, Alfred P. Sloan Foundation, Kagoshima University, European Commission, Nuclear Safety and Security Commission, Rikkyo University, Goddard Space Flight Center, Canadian Space Agency, Science and Technology Facilities Council, Japan Society for the Promotion of Science, RIKEN, Lawrence Livermore National Laboratory
Affordable and clean energy
Openalex Percentile: Top 8%
Astrophysical Phenomena and Observations
3.32
DOIOpen Access PDFOpenAlex
AI Navigator

Ask Laika to Summarize, Analyze, and Connect papers live on the map.

Summarize Papers & Methodologies

Extract key findings, datasets, and comparative methods across publications.

Benchmark Rankings & Visual Analytics

Rank top research institutions, authors, funders, topics, and journals by Field-Weighted Citation Impact (FWCI) and paper volume with instant charts.

Connect Distant Disciplines

Bridge topological clusters on the map to find hidden collaborative intersections.