Abstract Details

Name: Raj Prince
Affiliation: Raman Research Institute Bangalore
Conference ID: ASI2018_896
Title : Fermi-LAT Observation of Brightest Gamma-ray Flare ever Detected from CTA 102
Authors and Co-Authors : Co-Authors: Gayathri Raman{1}, Nayantara Gupta{1}, Pratik Majumdar{2} Affliation: {1} Raman Research Institute, Bangalore {2} Saha Institute of Nuclear Physics,Kolkata
Abstract Type : Poster
Abstract Category : Extragalactic astronomy
Abstract : We present a multi-wavelength study of the FSRQ blazar CTA 102 using Fermi LAT and simultaneous Swift XRT observations. The Fermi LAT telescope detected one of the brightest flares from this object during the observations conducted in December, 2016.In the forty eight days of flaring period the source underwent four major flares. Results of detailed characterization of the temporal and spectral properties of these flares indicate that at MJD 57750.813 the source has a gamma-ray flux of (27.26$\pm$3.30)$\times 10^{-6}$ ph cm$^{-2}$ s$^{-1}$ (from 3 hr binning) in the energy range of 0.1--300 GeV. This has been found to be the highest flux ever detected from the CTA 102. We have also detected a high energy photon of 73 GeV with a probability of 0.99999. The Gamma-ray SEDs are also shown for this brightest flare of CTA 102.