Obscured flat spectrum radio AGN as sources of high-energy neutrinos

Giuliano Alexander Maggi Olmedo, S. Buitink, Pablo Correa Camiroaga, Krijn De Vries, G. Gentile, J. Leon Tavares, O. Scholten, N. van Eijndhoven, M. Vereecken, T. Winchen

Research output: Contribution to journalArticle

9 Citations (Scopus)


Active Galactic Nuclei (AGN) are believed to be one of the main source candidates for the high-energy (TeV-PeV) cosmic neutrino flux recently discovered by the IceCube neutrino observatory. Nevertheless, several correlation studies between AGN and the cosmic neutrinos detected by IceCube show no significance. Therefore, in this article we consider a specific sub-class of AGN for which an increased neutrino production is expected. This sub-class contains AGN for which their high-energy jet is pointing toward Earth. Furthermore, we impose the condition that the jet is obscured by gas or dust surrounding the AGN. A method is presented to determine the total column density of the obscuring medium, which is probed by determining the relative X-ray attenuation with respect to the radio flux as obtained from the AGN spectrum. The total column density allows us to probe the interaction of the jet with the surrounding matter which leads to additional neutrino production. Finally, starting from two different source catalogs, this method is applied to specify a sample of low redshift radio galaxies for which an increased neutrino production is expected.
Original languageEnglish
Article number103007
Number of pages14
JournalPhysical Review D
Issue number10
Publication statusPublished - 16 Nov 2016

Bibliographical note

Accepted for publication by Phys. Rev. D


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