activity
20132026
most citedNuSTAR observation of Ark 564 reveals the variation of coronal temperature with flux

22 citations · 46 across the 7 of their papers we have counts for

collaborators

7 papers

astro-ph.HE2026

Tracing Fe K X-ray reverberation lag in the energy-resolved spectra of Narrow-line Seyfert 1 galaxy Ton S180

Dilip Kumar Roy, Samuzal Barua, Ranjeev Misra +2

We report the Fe K relativistic reverberation feature for the first time in the Narrow-line Seyfert\,1 galaxy Ton\,S180. Using a long observation from {\it XMM-Newton} we find that…

astro-ph.HE2025★ 1 cited

Modelling the energy dependent X-ray variability of Mrk 335

K. Akhila, Ranjeev Misra, Rathin Sarma +2

We present a technique which predicts the energy dependent fractional r.m.s for linear correlated variations of a pair of spectral parameters and apply it to an XMM-Newton observat…

astro-ph.HE2021

Evidence for coronal temperature variation in Seyfert 2 ESO 103--035 using NuSTAR observations

Samuzal Barua, V. Jithesh, Ranjeev Misra +4

We report flux-resolved spectroscopic analysis of the active galactic nucleus (AGN) ESO 103--035 using \textit{NuSTAR} observations. Following an earlier work, we fit the spectra u…

astro-ph.HE2020★ 22 cited

NuSTAR observation of Ark 564 reveals the variation of coronal temperature with flux

Samuzal Barua, V. Jithesh, Ranjeev Misra +3

The hard X-ray spectral index of some AGN has been observed to steepen with the source flux. This has been interpreted in a Comptonization scenario, where an increase in the soft f…

astro-ph.GA2016★ 2 cited

The distribution and kinematics of interstellar O~{\small VI} in the Milky Way}

Rathin Sarma, Amit Pathak, Jayanta Murthy +1

We present the results of a survey of interstellar O~{\small VI} absorption in the Milky Way (MW) towards {69} stars in the Large Magellanic Cloud (LMC) obtained with the \textit{F…

astro-ph.GA2015★ 20 cited

Relationship between X-ray spectral index and X-ray Eddington ratio for Mrk 335 and Ark 564

R. Sarma, S. Tripathi, R. Misra +3

We present a comprehensive flux resolved spectral analysis of the bright Narrow line Seyfert I AGNs, Mrk~335 and Ark~564 using observations by XMM-Newton satellite. The mean and th…