| Issue |
EPJ Web of Conferences
Volume 116, 2016
Very Large Volume Neutrino Telescope (VLVnT-2015)
|
|
|---|---|---|
| Article Number | 11001 | |
| Number of page(s) | 6 | |
| Section | Plenary Session | |
| DOI | https://doi.org/10.1051/epjconf/201611611001 | |
| Published online | 11 April 2016 | |
https://doi.org/10.1051/epjconf/201611611001
Multi-messenger aspects of cosmic neutrinos*
WIPAC & Department of Physics, University of Wisconsin–Madison, Madison, WI 53706, USA
Published online: 11 April 2016
The recent observation of TeV-PeV neutrinos by IceCube has opened a new window to the high-energy Universe. I will discuss this signal in the context of multi-messenger astronomy. For extragalactic source scenarios the corresponding gamma-rays are not directly observable due to interactions with the cosmic radiation backgrounds. Nevertheless, the isotropic sub-TeV gamma ray background observed by Fermi-LAT contains indirect information from secondary emission produced in electromagnetic cascades. On the other hand, observation of PeV gamma rays would provide a smoking-gun signal for Galactic emission. Interestingly, the overall energy density of the observed neutrino flux is close to a theoretical limit for neutrino production in ultra-high energy cosmic ray sources and might indicate a common origin of these phenomena. I will highlight various multi-messenger relations and their implications for neutrino source scenarios.
© Owned by the authors, published by EDP Sciences, 2016
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