49 citations · 186 across the 19 of their papers we have counts for
19 papers
Can dwarf spheroidal galaxies host a central black hole ?
K. Aditya, A. Mangalam
We construct mass models of Milky Way dwarf spheroidal galaxies to place constraints on the central black hole (BH) masses they can host. We model the galaxies as a three-component…
Properties of Faint X-ray Activity of XTE J1908+094 in 2019
Debjit Chatterjee, Arghajit Jana, Kaushik Chatterjee +5
We study the properties of the faint X-ray activity of Galactic transient black hole candidate XTE~J1908+094 during its 2019 outburst. Here, we report the results of detailed spect…
A geometric origin for quasi-periodic oscillations in black hole X-ray binaries
Prerna Rana, A. Mangalam
We expand the relativistic precession model to include nonequatorial and eccentric trajectories and apply it to quasi-periodic oscillations (QPOs) in black hole X-ray binaries (BHX…
A relativistic orbit model for temporal properties of AGN
Prerna Rana, A. Mangalam
We present a unified model for X-ray quasi-periodic oscillations (QPOs) seen in Narrow-line Seyfert 1 (NLSy1) galaxies, -ray and optical band QPOs that are seen in Blazars. The…
Cosmic spin and mass evolution of black holes and its impact
Dipanweeta Bhattacharyya, A. Mangalam
We build an evolution model of the central black hole that depends on the processes of gas accretion, the capture of stars, mergers as well as electromagnetic torque. In case of ga…
Astrophysically relevant bound trajectories around a Kerr black hole
Prerna Rana, A. Mangalam
We derive alternate and new closed-form analytic solutions for the non-equatorial eccentric bound trajectories, , $\ t \left( r, θ\right),\ r \left( θ\right…