TANAMI blazars in the IceCube PeV-neutrino fields^⋆

¹ Dr. Remeis Sternwarte & ECAP, Universität Erlangen-Nürnberg, Sternwartstrasse 7, 96049 Bamberg, Germany
e-mail: Felicia.Krauss@fau.de
² Institut für Theoretische Physik und Astrophysik, Universität Würzburg, Emil-Fischer-Str. 31, 97074 Würzburg, Germany
³ NASA, Goddard Space Flight Center, Greenbelt MD 20771, USA
⁴ University of Maryland, Baltimore County, Baltimore MD 21250, USA
⁵ Catholic University of America, Washington DC 20064, USA
⁶ Max-Planck-Institut für Radioastronomie, auf dem Hügel 69, 53121 Bonn, Germany
⁷ Departament d’Astronomia i Astrofísica, Universitat de València, C/ Dr. Moliner 50, 46100 Burjassot, València, Spain
⁸ Observatori Astronòmic, C/ Catedrático José Beltrán no. 2, 46980 Paterna, València, Spain
⁹ ECAP, Universität Erlangen-Nürnberg, Erwin-Rommel-Str. 1, 91058 Erlangen, Germany
¹⁰ Departamento de Astronomía, Universidad de Concepción, Casilla 160, Chile
¹¹ CSIRO Astronomy and Space Science, ATNF, PO Box 76, Epping NSW 1710, Australia
¹² Max-Planck-Institut für extraterrestrische Physik, Giessenbachstraße 1, 85741 Garching, Bonn, Germany
¹³ Bundesamt für Kartographie und Geodäsie, 93444 Bad Kötzting, Germany
¹⁴ CSIRO Astronomy and Space Science, Canberra Deep Space Communications Complex, PO Box 1035, Tuggeranong ACT 2901, Australia
¹⁵ School of Mathematics & Physics, University of Tasmania, Private Bag 37, Hobart, 7001 Tasmania, Australia
¹⁶ Hartebeesthoek Radio Astronomy Observatory, Krugersdorp, South Africa

Received: 15 May 2014
Accepted: 2 June 2014

Abstract

The IceCube Collaboration has announced the discovery of a neutrino flux in excess of the atmospheric background. Owing to the steeply falling atmospheric background spectrum, events at PeV energies most likely have an extraterrestrial origin. We present the multiwavelength properties of the six radio-brightest blazars that are positionally coincident with these events using contemporaneous data of the TANAMI blazar sample, including high-resolution images and spectral energy distributions. Assuming the X-ray to γ-ray emission originates in the photoproduction of pions by accelerated protons, the integrated predicted neutrino luminosity of these sources is high enough to explain the two detected PeV events.