45 citations · 74 across the 9 of their papers we have counts for
9 papers
Discovery of Strong Energy-Dependent X-ray Polarization in the Intermediate State of GS 1354-64
Swati Ravi, Lorenzo Marra, James F. Steiner +20
We report the discovery of significant X-ray polarization from the dynamically confirmed black hole X-ray binary (BHXB) GS 1354-64 during its 2025-2026 outburst, obtained with the…
Interaction between disk and extended corona in a general relativistic framework
Sudeb Ranjan Datta, Michal Bursa, Michal Dovciak +1
The energy equilibrium between the corona and the underlying disk in a two-phase accretion flow sets a lower limit on the achievable photon index. A slab corona may not explain the…
Investigating the consistency of the shape and flux of X-ray reflection spectra in the hard state with an accretion disk reaching close to the black hole
Sudeb Ranjan Datta, Michal Dovčiak, Michal Bursa +3
The observed spectra from black hole (BH) X-ray binaries (XRBs) typically consist of two primary components: multitemperature blackbody (BB) originating from the accretion disk in…
Dramatic Drop in the X-Ray Polarization of Swift J1727.81613 in the Soft Spectral State
Jiří Svoboda, Michal Dovčiak, James F. Steiner +34
Black-hole X-ray binaries exhibit different spectral and timing properties in different accretion states. The X-ray outburst of a recently discovered and extraordinarily bright sou…
Absorption lines from magnetically driven winds in X-ray binaries II: high resolution observational signatures expected from future X-ray observatories
Susmita Chakravorty, Pierre-Olivier Petrucci, Sudeb Ranjan Datta +12
In our self-similar, analytical, magneto-hydrodynamic (MHD) accretion-ejection solution, the density at the base of the outflow is explicitly dependent on the disk accretion rate -…
Angular momentum transport and thermal stabilization of optically thin, advective accretion flows through large-scale magnetic fields
Sudeb Ranjan Datta, Tushar Mondal, Banibrata Mukhopadhyay
Outward transport of angular momentum, as well as viscous and thermal stability, are the necessary criteria for the formation of accretion disc and to radiate steadily. Turbulent m…
Hyper-massive Black Holes have Faint Broad and Narrow Emission Lines
Harshitha K. Bhat, Susmita Chakravorty, Dhrubojyoti Sengupta +6
The EUV provides most of the ionization that creates the high equivalent width (EW) broad and narrow emission lines (BELs, NELs) of quasars. Spectra of Hypermassive Schwarzschild b…
Advective accretion onto a non-spherical accretor in white dwarf and neutron star binaries: a new scenario of shock formation
Sudeb Ranjan Datta, Prasun Dhang, Bhupendra Mishra
Numerous studies on hydrodynamics of the Keplerian as well as the sub-Keplerian accretion disc around a compact object (e.g., white dwarf (WD), neutron star (NS), or a black hole (…
Nucleosynthesis in advective disc and outflow: possible explanation for overabundances in winds from X-ray binaries
Sudeb Ranjan Datta, Banibrata Mukhopadhyay
Multiple spectroscopic lines of different elements observed in winds from X-ray binaries (XRBs), based on one zone model, indicate super-solar abundance of elements, e.g. Mg, Si, S…