Abstract Details
| Name: Amit Shukla Affiliation: University of Wuerzburg Conference ID: ASI2019_491 Title : Implications of observed short-timescale gamma-ray variabilities on blazars jets Authors and Co-Authors : Amit Shukla Abstract Type : Oral Abstract Category : Extragalactic Astronomy Abstract : The locations of emission of gamma-ray radiation in active galactic nuclei jet are highly debated and it ranges from light-hours to a few light-years in quasar jets. The situation is more complex in the case of flat spectrum radio quasars, where the gamma-rays photons above 10 GeV may interact with the UV radiation from a broad line region and get absorbed. I will be talking about the recent detections of high energy photons during the minute-scale variability at gamma-ray energies from flat spectrum radio quasars. The minute-scale variability and detection of high energy photons from blazar jets challenge the standard shock-in-jet scenario where gamma-ray emission of blazars is commonly assumed to be associated with shocks traveling down the jet. The observed fast variability indicates dissipation of magnetic islands from the base of the jet encountering the turbulent plasma at the end of the magnetic nozzle. |