4 papers
Evolution of Accretion Properties in Mrk 1040 using long-term X-ray Observations
Prantik Nandi, Narendranath Layek, Sandip K Chakrabarti +2
We present a comprehensive long-term, multi-epoch spectral and timing study of the Seyfert 1 Active Galactic Nucleus (AGN) Mrk~1040, utilizing X-ray observations spanning from 2009…
Discovery of Changing-Look behavior in AGN NGC 3822: A long-term multiwavelength study
Narendranath Layek, Prantik Nandi, Sachindra Naik +7
We present a comprehensive long-term multi-wavelength study of the active galactic nucleus (AGN) NGC 3822, based on 17 years (2008 to 2025) of X-ray, ultraviolet (UV), and optical…
A long-term study of Mrk 50 : Appearance and disappearance of soft excess
Narendranath Layek, Prantik Nandi, Sachindra Naik +1
We present an extensive temporal and spectral study of the Seyfert 1 AGN Mrk 50 using 15 years (2007-2022) of multiwavelength observations from XMM-Newton, Swift, and NuSTAR for th…
The accretion properties of a low-mass Active Galactic Nucleus: UGC 6728
Prantik Nandi, Sachindra Naik, Arka Chatterjee +3
We present a comprehensive analysis of approximately years () of X-ray observations of UGC~6728, a low-mass bare AGN, for the first time. Our study encompasses both…