20 citations · 33 across the 11 of their papers we have counts for
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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…
Accretion Geometry of the New Galactic Black Hole Candidate AT2019wey in the Hard State
Pragati Sahu, Swadesh Chand, Gulab C. Dewangan +3
We perform broadband spectral and timing studies of the Galactic low-mass black hole candidate AT2019wey using quasi-simultaneous NICER, Swift, and NuSTAR observations obtained in…
Evolution of the Inner Accretion Flow in Swift J1727.81613 across Intermediate States: Insights from Broadband Spectral and Timing Analysis
Swadesh Chand, Andrzej A. Zdziarski, Gulab C. Dewangan +1
We present a comprehensive broadband spectral and variability study of the newly detected black hole X-ray binary Swift~J1727.8--1613 in the intermediate states during its 2023 out…
The strong Fe K line and spin of the black-hole X-ray binary MAXI J1631-479
Andrzej A. Zdziarski, Swadesh Chand, Gulab Dewangan +5
We study the transient black hole binary MAXI J1631--479 in its soft spectral state observed simultaneously by the NICER and NuSTAR instruments. Its puzzling feature is the presenc…
2017 Outburst of H 1743-322: AstroSat and Swift View
Pragati Sahu, Swadesh Chand, Parijat Thakur +4
We perform a comprehensive timing and broadband spectral analysis using an AstroSat observation of the low-mass black hole X-ray binary H~1743--322 during 2017 outburst. Additional…
Accretion Geometry of GX 339-4 in the Hard State: AstroSat View
Swadesh Chand, Gulab C. Dewangan, Andrzej A. Zdziarski +3
We perform broadband ( keV) spectral analysis of five hard state observations of the low-mass back hole X-ray binary GX~339--4 taken by AstroSat during the rising phase of…