http://arxiv.org/abs/2211.04460
Recent multimessenger studies have provided evidence for high-energy neutrino sources that are opaque to GeV-TeV gamma-rays. We investigate the connection between high-energy neutrinos and gamma-rays in the active galaxy NGC 1068, and find that the neutrinos most likely come from regions within about 100 Schwarzschild radii. This is especially the case if neutrinos are produced via the photomeson production process, although the constraints could be alleviated if hadronuclear interactions are dominant. We consider the most favorable neutrino production regions, and discuss coronae, jets, winds, and their interactions with dense material. The results strengthen the importance of understanding dissipation mechanisms near the coronal region and the base of outflows. There could be a connection between active galactic nuclei with near-Eddington accretion and tidal disruptions events, in that neutrinos are produced in the obscured vicinity of supermassive black holes.
K. Murase
Wed, 9 Nov 22
52/76
Comments: 9 pages, 4 figures
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