23 citations · 43 across the 2 of their papers we have counts for
6 papers
Energy Dependent time lags in the Seyfert 1 galaxy NGC 4593
K. Sriram, V. K. Agrawal, A. R. Rao
We investigate the energy-time lag dependence of the source NGC 4593 using XMM-{\it Newton}/EPIC-pn data. We found that the time lag dependency is linear in nature with respect to…
The dependence of the estimated luminosities of ULX on spectral models
A. Senorita Devi, R. Misra, V. K. Agrawal +1
Data from {\it Chandra} observations of thirty nearby galaxies were analyzed and 365 X-ray point sources were chosen whose spectra were not contaminated by excessive diffuse emissi…
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…
Anti-correlated hard X-ray time lag in GRS 1915+105: evidence for a truncated accretion disc
Manojendu Choudhury, A. R. Rao, Surajit Dasgupta +3
Multi-wavelength observations of Galactic black hole candidate sources indicate a close connection between the accretion disk emission and the jet emission. The recent discovery of…
Detection of absorption features in the X-ray spectrum of the narrow-line Quasar PG 1404+226 : Possible evidence for accretion disk winds
Surajit Dasgupta, A. R. Rao, G. C. Dewangan +1
We present the results of an analysis of data from XMM-Newton and CHANDRA observations of the high luminosity narrow-line quasar PG 1404+226. We confirm a strong soft X-ray excess…
X-ray spectral evolution of low-mass X-ray binary GX 349+2
V. K. Agrawal, P. Sreekumar
We present the results of a systematic investigation of spectral evolution in the Z source GX 349+2, using data obtained during 1998 with Proportional-Counter-Array (PCA) on-board…