Journal
PHYSICAL REVIEW LETTERS
Volume 116, Issue 7, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.116.071101
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Funding
- Institute for Advanced Study
- Penn State University
- U.S. National Science Foundation (NSF) [OPP-0236449, PHY-0236449]
- U.S. Israel Binational Science Foundation
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The latest IceCube data suggest that the all-flavor cosmic neutrino flux may be as large as 10(-7) GeV cm(-2) s(-1) sr(-1) around 30 TeV. We show that, if sources of the TeV-PeV neutrinos are transparent to. rays with respect to two-photon annihilation, strong tensions with the isotropic diffuse gamma-ray background measured by Fermi are unavoidable, independently of the production mechanism. We further show that, if the IceCube neutrinos have a photohadronic (p gamma) origin, the sources are expected to be opaque to 1-100 GeV gamma rays. With these general multimessenger arguments, we find that the latest data suggest a population of cosmic-ray accelerators hidden in GeV-TeV gamma rays as a neutrino origin. Searches for x-ray and MeV gamma-ray counterparts are encouraged, and TeV-PeV neutrinos themselves will serve as special probes of dense source environments.
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