PoS - Proceedings of Science
Volume 338 - High Energy Astrophysics in Southern Africa (HEASA2018) - HEASA 2018 Speakers
An analytical hadronic synchrotron mirror model forblazars - Application to 3C279
L.L. Oberholzer* and M. Böttcher
Full text: pdf
Published on: July 29, 2019
On the 28th of January, the High Energy Stereoscopic System (H.E.S.S. the world’s largest ground-based gamma-ray observatory, located in Namibia) detected an orphan TeV gamma-ray flare in 3C279, not accompanied by flaring in the adjacent GeV gamma-ray regime. This is a gamma ray loud FSRQ (flat spectrum radio quasar) with a redshift of z = 0.538. Orphan flares
have to be caused by different processes than normal gamma ray flares, which are typically broad-band flares, characterized by variability across the entire electromagnetic spectrum. Specifically, the hadronic mirror model has been proposed to provide a consistent explanation of this flare.
The expected target photon densities have been calculated analytically using the cloud/mirror model starting from basic physical principles. This is compared to the density required to have the proton-gamma output approximately equal to the proton synchrotron radiation. The results are within one order of magnitude of each other. This is promising and shows that this model is feasible.
DOI: https://doi.org/10.22323/1.338.0024
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