53 citations · 471 across the 33 of their papers we have counts for
4 papers · 1 filter
Detection of a quasi-periodic oscillation in gamma-ray light curve of the high redshift blazar B2 1520+31
Alok C. Gupta, Ashutosh Tripathi, Paul J. Wiita +3
We detected a possible quasi-periodic oscillation (QPO) of ~ 71 days in the 0.1 -- 300 GeV gamma-ray Fermi-LAT light curve of the high redshift flat spectrum radio quasar B2 1520+3…
The New Variability Phase of OJ 287 and Emergence of New Components in NIR to X-ray Region
P. Kushwaha, E. M. de Gouveia Dal Pino, A. C. Gupta +1
We present a multi-wavelength (MW) spectral and temporal study of the recent activity of the claimed super-massive binary black hole system OJ 287 since December 2015. The overall…
The ever-surprising blazar OJ 287: multi-wavelength study and appearance of a new component in X-rays
Pankaj Kushwaha, Alok C. Gupta, Paul J. Wiita +21
We present a multi-wavelength spectral and temporal investigation of OJ 287 emission during its strong optical-to-X-ray activity between July 2016 - July 2017. The daily -ray fl…
Characterizing optical variability of OJ 287 in 2016 - 2017
Alok C. Gupta, Haritma Gaur, Paul J. Wiita +22
We report on a recent multi-band optical photometric and polarimetric observational campaign of the blazar OJ 287 which was carried out during September 2016 -- December 2017. We e…