Abstract Details
| Name: Ayesha Anjum Affiliation: Christ (Deemed to be University), Bengaluru Conference ID: ASI2019_73 Title : Variability studies of Fermi LAT Blazars Authors and Co-Authors : Ayesha Anjum, C. S. Stalin, S. B. Gudennavar, Suvendu Rakshit, S. G. Bubbly Abstract Type : Poster Abstract Category : Extragalactic Astronomy Abstract : Active Galactic Nuclei (AGN), one of the most luminous objects in the universe, emit radiation over a wide wavelength range. Among AGN, blazars, that comprise both flat spectrum radio quasars (FSRQs) and BL Lac objects (BL Lacs), are known to show flux and polarization variability. Though blazars have been studied for flux variations over a wide range of wavelengths, their variability nature in the infrared region is less explored. We therefore have carried out a systematic study on the infrared variability characteristics of a sample of about 1500 blazars that are detected by the Large Area Telescope (LAT) instrument on board the Fermi Gamma-ray Space Telescope using data from the Wide field Infrared Survey Explorer. Objects are found to show infrared variations both within a day and between days. Variability analysis was also carried out for various sub-classes of blazars such as the low synchrotron peaked blazars, the intermediate synchrotron peaked blazars and the high synchrotron peaked blazars. No significant differences in the infrared variability characteristics were noticed among the various subclasses of blazars. Details of the results will be discussed. |