Fermi/LAT counterparts of IceCube neutrinos above 100 TeV

Journal article

Publication Details

Author(s): Krauss F, Deoskar K, Baxter C, Kadler M, Kreter M, Langejahn M, Mannheim K, Polko P, Wang B, Wilms J
Journal: Astronomy & Astrophysics
Publication year: 2018
Volume: 620
ISSN: 1432-0746


The IceCube Collaboration has published four years of data and the observed neutrino flux is significantly in excess of the expected atmospheric background. Due to the steeply falling atmospheric background spectrum, events at the highest energies are most likely extraterrestrial. In our previous approach we have studied blazars as the possible origin of the High-Energy Starting Events (HESE) neutrino events at PeV energies. In this work we extend our study to include all HESE neutrinos (which does not include IC 170922A) at or above a reconstructed energy of 100 TeV, but below 1 PeV. We study the X-ray and gamma-ray data of all (similar to 200) 3LAC blazars that are positionally consistent with the neutrino events above 100 TeV to determine the maximum neutrino flux from these sources. This larger sample allows us to better constrain the scaling factor between the observed and maximum number of neutrino events. We find that when we consider a realistic neutrino spectrum and other factors, the number of neutrinos is in good agreement with the detected number of IceCube HESE events. We also show that there is no direct correlation between Fermi/LAT gamma-ray flux and the IceCube neutrino flux and that the expected number of neutrinos is consistent with the non-detection of individual bright blazars.

FAU Authors / FAU Editors

Wilms, Jörn Prof. Dr.
Professur für Astronomie und Astrophysik

External institutions with authors

Indian Institute of Technology Kharagpur
Johns Hopkins University
Julius-Maximilians-Universität Würzburg
Los Alamos National Laboratory
University of Amsterdam

How to cite

Krauss, F., Deoskar, K., Baxter, C., Kadler, M., Kreter, M., Langejahn, M.,... Wilms, J. (2018). Fermi/LAT counterparts of IceCube neutrinos above 100 TeV. Astronomy & Astrophysics, 620. https://dx.doi.org/10.1051/0004-6361/201834183

Krauss, F., et al. "Fermi/LAT counterparts of IceCube neutrinos above 100 TeV." Astronomy & Astrophysics 620 (2018).


Last updated on 2019-23-04 at 08:08