Proton synchrotron a plausible explanation of Orphan flare of 3C 279 in 2018

Journal
Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023)
ISSN
18248039
Date Issued
2023
Author(s)
Sunanda
DOI
https://doi.org/10.22323/1.444.1580
Abstract
An orphan very-high-energy gamma-ray flare from 3C 279 was reported on 28 January 2018, however, it was not accompanied by a Fermi-LAT flare. This VHE orphan flare was reported by the High Energy Stereoscopic System (H.E.S.S) telescope Eleven days after the Fermi-LAT flare. Distinct mechanisms from regular gamma-ray flares must produce orphan flares. A coherent explanation for this phenomenon, the proton synchrotron, and electron synchrotron with External Compton(EC) have been put forth.
Subjects