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X-Ray Spectral Variability of Cygnus X-1 and Simulated MHD Flow

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Lighthouses of the Universe: The Most Luminous Celestial Objects and Their Use for Cosmology

Part of the book series: ESO ASTROPHYSICS SYMPOSIA ((ESO))

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Abstract.

X-ray hardness ratio variations of Cyg X-1 in the hard state comprise two components with different timescales; one characterizing the light variation and the other rapid hardening around the peak. These seemingly indicate two (or more) physical processes being involved; e.g., disturbance propagation and magnetic flares. Such features may be consistent with the view of MHD accretion flow.

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Authors and Affiliations

  1. Yukawa Institute, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan

    Shin Mineshige

  2. RIKEN, Hirosawa, Wako, Saitama 351-0198, Japan

    Hitoshi Negoro

  3. Dept. of Physics, Chiba University, Inage-ku, Chiba 263-8522, Japan

    Ryoji Matsumoto & Mami Machida

Authors
  1. Shin Mineshige
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  2. Hitoshi Negoro
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  3. Ryoji Matsumoto
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  4. Mami Machida
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Marat Gilfanov Rashid Sunyeav Eugene Churazov

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Mineshige, S., Negoro, H., Matsumoto, R., Machida, M. X-Ray Spectral Variability of Cygnus X-1 and Simulated MHD Flow. In: Gilfanov, M., Sunyeav, R., Churazov, E. (eds) Lighthouses of the Universe: The Most Luminous Celestial Objects and Their Use for Cosmology. ESO ASTROPHYSICS SYMPOSIA. Springer, Berlin, Heidelberg. https://doi.org/10.1007/10856495_71

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  • DOI: https://doi.org/10.1007/10856495_71

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-43769-7

  • Online ISBN: 978-3-540-48014-3

  • eBook Packages: Springer Book Archive

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