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Gamma-ray and Neutrino Signals from Accretion Disk Coronae of Active Galactic Nuclei

Inoue, Yoshiyuki; Doi, Akihiro; Khangulyan, Dmitry

To explain the X-ray spectra of active galactic nuclei (AGN), non-thermal activity in AGN coronae such as pair cascade models has been extensively discussed in the past literature. Although X-ray and gamma-ray observations in the 1990s disfavored such pair cascade models, recent millimeter-wave observations of nearby Seyferts have established the …