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6 papers · 2 filters
4.5 years multi-wavelength observations of Mrk 421 during the ARGO-YBJ and Fermi common operation time
B. Bartoli, P. Bernardini, X. J. Bi +68
We report on the extensive multi-wavelength observations of the blazar Markarian 421 (Mrk 421) covering radio to gamma-rays, during the 4.5 year period of ARGO-YBJ and Fermi common…
Discovery of a Highly Polarized Optical Microflare in the Blazar S5 0716+714 During 2014 WEBT Campaign
Gopal Bhatta, Arti Goyal, Michal Ostrowski +42
The occurrence of low-amplitude flux variations in blazars on hourly timescales, commonly known as microvariability, is still a widely debated subject in high-energy astrophysics.…
Crab Nebula: five-year observation with ARGO-YBJ
YBJ Collaboration
The ARGO-YBJ air shower detector monitored the Crab Nebula gamma ray emission from 2007 November to 2013 February. The integrated signal, consisting of 3.3 10 ev…
Search for GeV Gamma Ray Bursts with the ARGO-YBJ Detector: Summary of Eight Years of Observations
B. Bartoli, P. Bernardini, X. J. Bi +78
The search for Gamma Ray Burst (GRB) emission in the energy range 1-100 GeV in coincidence with the satellite detection has been carried out using the Astrophysical Radiation with…
The Knee of the Cosmic Hydrogen and Helium Spectrum below 1 PeV Measured by ARGO-YBJ and a Cherenkov Telescope of LHAASO
B. Bartoli, P. Bernardini, X. J. Bi +93
The measurement of cosmic ray energy spectra, in particular for individual species, is an essential approach in finding their origin. Locating the "knees" of the spectra is an impo…
GRB Spectra in the complex of synchrotron and Compton processes
Yunguo Jiang, Shao-Ming Hu, Xu Chen +6
Under the steady state condition, the spectrum of electrons is investigated by solving the continuity equation under the complex radiation of both the synchrotron and Compton proce…