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IceCube has measured a diffuse astrophysical flux of TeV-PeV neutrinos. The most plausible sources are unique high energy cosmic ray accelerators like hypernova remnants (HNRs) and remnants from gamma ray bursts in star-burst galaxies,…

High Energy Physics - Phenomenology · Physics 2015-05-19 Sovan Chakraborty , Ignacio Izaguirre

In light of the recent IceCube evidence for a flux of extraterrestrial neutrinos, we revisit the prospect of observing the sources of the Galactic cosmic rays. In particular, we update the predictions for the neutrino flux expected from…

High Energy Astrophysical Phenomena · Physics 2014-06-20 M. C. Gonzalez-Garcia , F. Halzen , V. Niro

The IceCube Collaboration has recently reported the observation of a flux of high-energy astrophysical neutrinos. The angular distribution of events is consistent with an isotropic arrival direction of neutrinos which is expected for an…

High Energy Astrophysical Phenomena · Physics 2015-06-19 Markus Ahlers , Francis Halzen

Air-Cherenkov telescopes have mapped the Galactic plane at TeV energies. Here we evaluate the prospects for detecting the neutrino emission from sources in the Galactic plane assuming that the highest energy photons originate from the decay…

High Energy Astrophysical Phenomena · Physics 2016-12-07 Francis Halzen , Ali Kheirandish , Viviana Niro

We briefly review the main results of the IceCube Neutrino Observatory one decade after the discovery of cosmic neutrinos. We emphasize the importance of multimessenger observations, most prominently for the discovery of neutrinos from our…

High Energy Astrophysical Phenomena · Physics 2026-05-04 Ke Fang , Francis Halzen

The recent IceCube publication claims the observation of cosmic neutrinos with energies down to $\sim 10$ TeV, reinforcing the growing evidence that the neutrino flux in the 10-100 TeV range is unexpectedly large. Any conceivable source of…

High Energy Physics - Phenomenology · Physics 2020-05-20 Antonio Capanema , Arman Esmaili , Kohta Murase

In this paper I review recent results on high-energy neutrino astronomy and what they can reveal about some of the most extreme cosmic accelerators. I discuss recent measurements of the diffuse TeV-PeV cosmic neutrino spectrum by the…

High Energy Astrophysical Phenomena · Physics 2026-03-12 Xavier Rodrigues

The IceCube Collaboration has recently reported evidence for a high-energy extraterrestrial neutrino flux. During two years of operation 28 events with energies between 30 TeV and 1.2 PeV were observed while only 10.6 events were expected…

High Energy Astrophysical Phenomena · Physics 2014-07-16 Markus Ahlers , Kohta Murase

In this paper, we present high-energy neutrino spectra from 21 Galactic supernova remnants (SNRs), derived from gamma-ray measurements in the GeV-TeV range. We find that only the strongest sources, i.e. G40.5-0.5 in the north and Vela…

Astrophysics of Galaxies · Physics 2015-06-12 Matthias Mandelartz , Julia Becker Tjus

The IceCube Collaboration has recently reported compelling evidence of high-energy neutrino emission from NGC~1068, and also mild excesses for NGC 4151 and CGCG420-015, local Seyfert galaxies. This has increased the interest along neutrino…

High Energy Astrophysical Phenomena · Physics 2024-06-21 Antonio Ambrosone

The latest IceCube data suggest that the all-flavor cosmic neutrino flux may be as large as 10^-7 GeV/cm^2/s/sr around 30 TeV. We show that, if sources of the TeV-PeV neutrinos are transparent to gamma rays with respect to two-photon…

High Energy Astrophysical Phenomena · Physics 2016-03-14 Kohta Murase , Dafne Guetta , Markus Ahlers

IceCube has discovered an unresolved and isotropic flux of neutrinos between 10 TeV and 8 PeV. Extragalactic origin for this flux is usually assumed, as well as a correlation with the sources of cosmic rays. To date, no clear association…

High Energy Astrophysical Phenomena · Physics 2018-07-01 Ignacio Taboada , Chun Fai Tung , Joshua Wood

The IceCube Neutrino Observatory recently published evidence for diffuse neutrino emission from the Galactic Plane at $4.5\sigma$ significance. This new source of astrophysical neutrinos provides an exciting laboratory for probing the…

High Energy Physics - Phenomenology · Physics 2025-07-08 Miller MacDonald , Kiara Carloni , Carlos A. Argüelles , Rafael Alves Batista , Ivan Martínez-Soler

We investigate the possibility that the recently detected TeV-PeV neutrino events by IceCube can originate from extragalactic ultra-high-energy cosmic ray interactions with the cosmic microwave background or the UV/optical/IR background.…

High Energy Astrophysical Phenomena · Physics 2014-07-25 Guenter Sigl , Arjen van Vliet

High-energy (TeV-PeV) cosmic neutrinos are expected to be produced in extremely energetic astrophysical sources such as active galactic nuclei. The IceCube Neutrino Observatory at the South Pole has recently detected a diffuse astrophysical…

High Energy Astrophysical Phenomena · Physics 2019-08-13 Donglian Xu

The origin of the astrophysical neutrino flux reported by the IceCube Collaboration remains an open question. In this study, we use three years of publicly available IceCube data to search for evidence of neutrino emission from the blazars…

High Energy Astrophysical Phenomena · Physics 2021-03-17 Daniel Smith , Dan Hooper , Abigail Vieregg

In ten years of observations, the IceCube neutrino observatory has revealed a neutrino sky in tension with previous expectations for neutrino point source emissions. Astrophysical objects associated with hadronic processes might act as…

High Energy Astrophysical Phenomena · Physics 2021-06-24 Alina Kochocki , Volodymyr Takhistov , Alexander Kusenko , Nathan Whitehorn

The IceCube Neutrino Observatory has measured an isotropic astrophysical neutrino flux through various detection channels for over 12 years. IceCube has also detected neutrino emission from the Galactic plane at the 4.5$\sigma$ significance…

High Energy Astrophysical Phenomena · Physics 2025-07-14 Jesse Osborn , Albrecht Karle

The IceCube neutrino discovery presents an opportunity to answer long-standing questions in high-energy astrophysics. For their own sake and relations to other processes, it is important to understand neutrinos arising from the Milky Way,…

High Energy Astrophysical Phenomena · Physics 2015-11-18 Matthew D. Kistler

We explore the detectability of the neutrino flux from the entire Galactic Plane or from a part of it with IceCube. We calculate the normalization and the spectral index of the neutrino power law spectrum from different regions of the…

High Energy Astrophysical Phenomena · Physics 2015-06-16 C. Tchernin , J. A. Aguilar , A. Neronov , T. Montaruli