Multi-wavelength study of AGN jets

Abstract

Active Galactic Nuclei (AGN), those are one of the most lu minous objects in the universe. These are sub-class of galaxies, in which the nuclear region of the galaxy is extremely luminous. These nuclei emit over the whole electromagnetic spectrum. Hence by the Multi-wavelength study, we can conclude which are the physical processes are going on at which region of the AGN. Re cently, we detected Neutrino was coming from one of the classes of the AGN by IceCube Neutrino Observatory. Hence, with this Multi-wavelength study, we can predict “How these neutrinos are produced from these objects.” We studied the gamma-ray flux vari ability of BL Lac object QSO B0208-512 (z ∼ 1.003), an AGN using Fermi-LAT and Swift-XRT data between the period MJD 58700 to MJD 59100. We found the source to be extremely vari able during this period, and a few bright flares were detected. The 5-day binned light curve of QSO B0208-512 shows significant vari ability; hence, the Bayesian block algorithm has been used to de termine the optimal segmentation of the data. Flux variability and the source’s spectral modeling are used to constraining the particle acceleration processes in the blazar jet.