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20202026
most citedAstroSat view of the newly discovered X-ray transient MAXI~J1803--298 in the Hard-intermediate state

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astro-ph.HE2026

Model dependence of XRISM black-hole spin constraints in Cyg X-1

Andrzej A. Zdziarski, Swadesh Chand, Michal Szanecki +2

We study the persistent black hole X-ray binary Cyg X-1, recently observed by XRISM Resolve and simultaneously by NICER and NuSTAR in its hard spectral state. We confirm the result…