Understanding the giant gamma-ray outburst on June 16, 2015 from the blazar 3C 279
arXiv:2002.04965 · doi:10.1007/s10509-020-3746-2
Abstract
A very bright and fast varying gamma-ray flare has been detected from the blazar 3C 279 on June 16, 2015. We have studied the broadband spectral energy distribution of the source during the flaring episode and in the low activity state using a simple one zone leptonic model. We find that an electron energy distribution described by a broken power law can be used to reproduce the broadband emissions during the high and low activity states. The flux measurements at radio, infrared and optical frequencies are reproduced by the synchrotron emission resulting from the relativistic electrons in a jet magnetic field strength of 0.37 G. The gamma-ray emission from the blazar 3C 279 is attributed to the Comptonization of the IR seed photons from the dusty torus with a temperature of 870 K. The outburst from the source observed on June 16, 2015 can be ascribed to an efficient acceleration process associated with a sudden enhancement in the electron energy density in the emitting region with respect to the low activity state. The fast gamma-ray variability at a minute timescale implies that the emission during the flare originates from a more compact region and the size of the emission zone in the low activity state is found to be four times larger than that during the flare. We have also used the model parameters derived from the broadband spectral energy distribution modelling to investigate a few physical properties of the jet during the outburst.
4 Figures, 2 Tables, Accepted for Publication in Astrophysics and Space Science (Ap&SS) Journal
References in corpus (13)
- Active Galactic Nuclei: what's in a name?
- The power of blazar jets
- A change in the optical polarization associated with a gamma-ray flare in the blazar 3C 279
- A hadronic origin for ultra-high-frequency-peaked BL Lac objects
- Gamma-Ray Studies of Blazars: Synchro-Compton Analysis of Flat Spectrum Radio Quasars
- Rapid Variability of Blazar 3C 279 during Flaring States in 2013-2014 with Joint Fermi-LAT, NuSTAR, Swift, and Ground-Based Multi-wavelength Observations
- Constraints on the emission region of 3C 279 during strong flares in 2014 and 2015 through VHE gamma-ray observations with H.E.S.S
- Radiation and Polarization Signatures of 3D Multi-zone Time-dependent Hadronic Blazar Model
- A time dependent approach to model X-ray and --ray light curves of Mrk 421 observed during the flare in February 2010
- Meeting the Challenge from Bright and Fast Gamma-Ray Flares of 3C 279
- Extremely High energy peaked BL Lac nature of the TeV blazar Mrk 501
- Multi-wavelength study of Mrk 421 TeV flare observed with \emph{TACTIC} telescope in February 2010
- Optical polarization properties of February 2010 outburst of the blazar Mrk 421