A Multi-wavelength View of VHE Gamma Ray Flares from Mrk421 and Mrk 501 Observed by the ARGO-YBJ Experiment
Abstract
As the most active blazars, Mrk421 and Mrk 501 are excellent candidates for the study of the physical processes within the jets of active galactic nuclei. Since August 2008, these sources have been monitored daily by the ARGO-YBJ experiment at γ-ray energies above 0.3 TeV, by Fermi-LAT at 0.1-300 GeV γ-ray energies, by BAT/Swift at 15-50 keV hard X-rays, by ASM/RXTE, MAXI and XRT/Swift at 0.3-20 keV soft X-rays. Here we report a multi-wavelength view of the large flares from Mrk 421 and Mrk 501 during the period from August 2008 to January 2013, which were simultaneously observed by these detectors. The emission spectra of the low and high energy bumps are well measured. The evolution of the spectra during different flares is presented.
- Publication:
-
International Cosmic Ray Conference
- Pub Date:
- 2013
- Bibcode:
- 2013ICRC...33.2690C
- Keywords:
-
- Mrk 421;
- Mrk 501;
- gamma ray observation;
- AGN;
- ARGO-YBJ