Fermi-detection of gamma-ray Emissions from the Hot Coronae of Radio-quiet Active Galactic Nuclei

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Fermi_Detection.pdf (3.51 MB)

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http://arxiv.org/abs/2502.19189

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https://doi.org/10.48550/arXiv.2502.19189
 http://hdl.handle.net/11603/37865

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UMBC Center for Space Sciences and Technology (CSST) / Center for Research and Exploration in Space Sciences & Technology II (CRSST II)
UMBC Faculty Collection

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Author/Creator ORCID

https://orcid.org/0000-0001-5711-084X

Date

2025-02-26

Type of Work

journal articles
preprints
Text

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Citation of Original Publication

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This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
Public Domain

Subjects

Astrophysics - Astrophysics of Galaxies
Astrophysics - High Energy Astrophysical Phenomena

Abstract

Relativistic jets around supermassive black holes (SMBHs) are well-known powerful γ-ray emitters. In absence of the jets in radio-quiet active galactic nuclei (AGNs), how the SMBHs work in γ-ray bands is still unknown despite of great observational efforts made in the last 3 decades. Considering the previous efforts, we carefully select an AGN sample composed of 37 nearby Seyfert galaxies with ultra-hard X-rays for the goals of γ-ray detections by excluding all potential contamination in this band.