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Spectral States of OJ 287 blazar from Multi-wavelength Observations with
K. P. Singh, P. Kushwaha, A. Sinha +3
We present {\it AstroSat} soft X-ray, near-UV (NUV), and far-UV (FUV) observations of a blazar, OJ~287, carried out in 2017, 2018, and 2020. The simultaneous observations with NuST…
AstroSat View of Blazar OJ 287: A complete evolutionary cycle of HBL Component from end-phase to disappearance and Re-emergence
Pankaj Kushwaha, K. P. Singh, A. Sinha +3
We report three AstroSat observations of BL Lacertae object OJ 287. The three observations caught it in very different flux states that are connected to different broadband spectra…
Multi-wavelength Analysis and Modeling of OJ 287 During 2017-2020
Raj Prince, Aditi Agarwal, Nayantara Gupta +4
Context. The blazar OJ 287 has been proposed as a binary black hole system based on its periodic optical outburst. Among blazars with parsec scale jets, the black hole binary syste…
A comprehensive study of 2019-2020 flare of OJ 287 using AstroSat, Swift, and NuSTAR
Raj Prince, Gayathri Raman, Rukaiya Khatoon +5
OJ 287 is a well-studied binary black hole system, that occasionally exhibits bright X-ray and optical flares. Here we present a detailed spectral study of its second brightest X-r…