197 citations · 2.9k across the 142 of their papers we have counts for
19 papers · 1 filter
Damped harmonic oscillator interpretation of the soft-state power spectra of Cyg X-1
R. Misra, A. A. Zdziarski
We develop a model of an accretion disc in which the variability induced at a given radius is governed by a damped harmonic oscillator at the corresponding epicyclic frequency. Tha…
Statistical Evidence for Three classes of Gamma-ray Bursts
Tanuka Chattopadhyay, Ranjeev Misra, Asis Kumar Chattopadhyay +1
Two different multivariate clustering techniques, the K-means partitioning method and the Dirichlet process of mixture modeling, have been applied to the BATSE Gamma-ray burst (GRB…
Self-consistent computation of gamma-ray spectra due to proton-proton interactions in black hole systems
S. Bhattacharyya, N. Bhatt, R. Misra
In the inner regions of an accretion disk around a black hole, relativistic protons can interact with ambient matter to produce electrons, positrons and -rays. The resultant ste…
The non-linear behavior of the black hole system GRS 1915+105
R. Misra, K. P. Harikrishnan, G. Ambika +1
Using non-linear time series analysis, along with surrogate data analysis, it is shown that the various types of long term variability exhibited by the black hole system GRS 1915+1…
The Unusual Spectrum of the Ultra Luminous X-ray Source, M82 X-1
V. K. Agrawal, R. Misra
The results of a spectral analysis, using {\it XMM-Newton} and {\it Chandra} data of the brightest ultra luminous X-ray source in the nearby galaxy M82, are presented. The spectrum…
On the incidence of KHz quasi-periodic oscillations in the neutron star system 4U 1636-53
R. Misra, K. Shanthi
Nearly sec of non-zero count rate data were obtained from five years of {\rm RXTE} observations of the atoll source 4U 1636-53. The data was divided into 10309 s…