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Optical spectroscopy of 1A 0535+262 before, during, and after the 2020 giant X-ray outburst
Sachindra Naik, Birendra Chhotaray, Neeraj Kumari
We present the findings from our study of the Be/X-ray binary 1A 0535+262/HD 245770 during the giant X-ray outburst in October 2020. We utilized the 1.2-m telescope at Mount Abu In…
Long-term X-ray temporal and spectral study of a Seyfert galaxy Mrk 6
Narendranath Layek, Prantik Nandi, Sachindra Naik +3
We present a long-term X-ray study of a nearby Active Galactic Nucleus Mrk 6, utilizing observations from XMM-Newton, Suzaku, Swift and NuSTAR observatories, spanning 22 years from…
Long-term study of the first Galactic ultraluminous X-ray source Swift J0243.6+6124 using NICER
Birendra Chhotaray, Gaurava K. Jaisawal, Prantik Nandi +4
We present the results obtained from detailed X-ray timing and spectral studies of X-ray pulsar Swift J0243.6+6124 during its giant and normal X-ray outbursts between 2017 and 2023…