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Model Dependence of XRISM Black Hole Spin Constraints in Cyg X-1

  • Authors: Andrzej A. Zdziarski, Swadesh Chand, Michał Szanecki, Gulab Dewangan, Barbara De Marco

Andrzej A. Zdziarski et al 2026 The Astrophysical Journal Letters 1005 .

  • Provider: AAS Journals

Caption: Figure 2.

(a) The 2–20 keV count rate versus the (4–10)/(2–4) keV hardness ratio. (b) The (10–20)/(4–10) keV hardness ratio versus the (4–10)/(2–4) keV hardness ratio (the color–color diagram). Both panels show MAXI data binned over 10 day intervals. The MAXI data averaged over the days of the XRISM observation we used are shown as red symbols.

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