Murase, Kohta (2022) Hidden Hearts of Neutrino Active Galaxies. The Astrophysical Journal Letters, 941 (1). L17. ISSN 2041-8205
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Abstract
Recent multimessenger studies have provided evidence for high-energy neutrino sources that are opaque to GeV–TeV gamma rays. We present model-independent studies on the connection between neutrinos and gamma rays in the active galaxy NGC 1068, and find that the neutrinos most likely come from regions within ∼30–100 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 outflow base. 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.
Item Type: | Article |
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Subjects: | Bengali Archive > Physics and Astronomy |
Depositing User: | Unnamed user with email support@bengaliarchive.com |
Date Deposited: | 21 Apr 2023 07:08 |
Last Modified: | 21 Sep 2024 04:38 |
URI: | http://science.archiveopenbook.com/id/eprint/881 |