Speaker
Amit Shukla
(University of Würzburg)
Description
The flux variability of blazars can shed light on the innermost region of jets well beyond the imaging capabilities of present generation telescopes in any part of the electromagnetic spectrum. The FSRQ, CTA 102 (z ~ 1) started showing activity in gamma-rays during 2016 with a few very bright flares. The detection of intra-day variability above 100 MeV using Fermi-LAT during these flares allows to constrain the gamma-ray emission region in CTA 102. The inferred compactness of the emission region suggests, an origin of the gamma-rays close to the central engine and a low pair-creation opacity of the broad-line emission region, or a hadronic emission scenario outside of BLR region.
Primary author
Amit Shukla
(University of Würzburg)
