596 citations
- Indian Centre for Space PhysicsIN143 papers
- Bose InstituteIN67 papers
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- Tata Institute of Fundamental ResearchIN58 papers
- Indian Institute of Science BangaloreIN53 papers
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5 papers · 2 filters
Broadband X-Ray Observations of the 2018 Outburst of the Changing-Look Active Galactic Nucleus NGC 1566
Arghajit Jana, Neeraj Kumari, Prantik Nandi +5
We study the nature of the changing-look Active Galactic Nucleus NGC 1566 during its June 2018 outburst. During the outburst, the X-ray intensity of the source rises up to ~25-30 t…
Study of Temporal and Spectral variability for Blazar PKS 1830-211 with Multi-Wavelength Data
Jayant Abhir, Raj Prince, Jophin Joseph +2
A study of the gravitationally lensed blazar PKS 1830-211 was carried out using multi waveband data collected by Fermi-LAT, Swift-XRT and Swift-UVOT telescopes between MJD 58400 to…
Long term X-Ray Observations of Seyfert 1 Galaxy Ark 120: On the origin of soft-excess
Prantik Nandi, Arka Chatterjee, Sandip K. Chakrabarti +1
We present the long-term X-ray spectral and temporal analysis of a 'bare-type AGN' Ark 120. We consider the observations from XMM-Newton, Suzaku, Swift, and NuSTAR from 2003 to 201…
Two-Component Advective Flows around Neutron Stars
Ayan Bhattacharjee, Sandip K. Chakrabarti
The fundamental difference between accretion around black holes and neutron stars is the inner boundary condition, which affects the behavior of matter very close to the compact ob…
Similarities and Differences in Accretion Flow Properties between GRS 1915+105 and IGR J17091-3624: a Case Study
Anuvab Banerjee, Ayan Bhattacharjee, Dipak Debnath +1
We perform a comparative spectro-temporal analysis on the variability classes of GRS 1915+105 and IGR J17091-3624 to draw inferences regarding the underlying accretion flow mechani…