Testing the hadronuclear origin of PeV neutrinos observed with IceCube

Murase, Kohta; Ahlers, M.; Lacki, Brian C.

doi:10.1103/physrevd.88.121301

Cited by 391 publications

(547 citation statements)

References 77 publications

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“…As discussed by various authors (e.g. [87][88][89]), sources which could reproduce the flux of the extragalactic diffuse PeV neutrinos detected with IceCube [90] are at risk of violating the diffuse 1-800 GeV γ-ray background seen by Fermi. Thus, since in our case the neutrino flux is well below the IceCube limits, also the related diffuse GeV γ-ray background is expected to be well below the Fermi limits.…”

Section: Acceleration Site and Possible Neutrino Emissionmentioning

confidence: 99%

Ultrahigh-energy cosmic ray production by turbulence in gamma-ray burst jets and cosmogenic neutrinos

Asano

Mészáros

2016

Phys. Rev. D

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We propose a novel model to produce ultra-high-energy cosmic-rays (UHECRs) in gamma-ray burst (GRB) jets. After the prompt gamma-ray emission, hydrodynamical turbulence is excited in the GRB jets at or before the afterglow phase. The mildly relativistic turbulence stochastically accelerates protons. The acceleration rate is much slower than the usual first-order shock acceleration rate, but in this case it can be energy-independent. The resultant UHECR spectrum is so hard that the bulk energy is concentrated in the highest energy range, resulting in a moderate requirement for the typical cosmic ray luminosity of ∼ 10 53.5 erg s −1 . In this model, the secondary gamma-ray and neutrino emissions initiated by photopion production are significantly suppressed. Although the UHECR spectrum at injection shows a curved feature, this does not conflict with the observed UHECR spectral shape. The cosmogenic neutrino spectrum in the 10 17 -10 18 eV range becomes distinctively hard in this model, which may be verified by future observations.

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Section: Acceleration Site and Possible Neutrino Emissionmentioning

confidence: 99%

Ultrahigh-energy cosmic ray production by turbulence in gamma-ray burst jets and cosmogenic neutrinos

Asano

Mészáros

2016

Phys. Rev. D

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“…4 indicates the the optimistic upper limit can exceed the IceCube data in principle. The spectral shape is suggestive as it is globally soft for 10 TeV E ν 5 PeV, but avoids the constraints set by the Fermi extragalactic gamma-ray background measurement in the sub-TeV range [93][94][95].…”

Section: Diffuse Neutrinos From Low-luminosity Grbs and Hypernovaementioning

confidence: 99%

Choked jets and low-luminosity gamma-ray bursts as hidden neutrino sources

2016

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We consider gamma-ray burst (GRB) jets that are choked by extended material as sources of high-energy cosmic neutrinos. We take into account the jet propagation physics both inside the progenitor star and the surrounding dense medium. Radiation constraints, which are relevant for high-energy neutrino production are considered as well. Efficient shock acceleration of cosmic rays is possible for sufficiently low-power jets and/or jets buried in a dense, extended wind or outer envelope. Such conditions also favor GRB jets to become stalled, and the necessary conditions for stalling are explicitly derived. Such choked jets may explain transrelativistic supernovae (SNe) and low-luminosity (LL) GRBs, giving a unified picture of GRBs and GRB-SNe. Focusing on this unified scenario for GRBs, we calculate the resulting neutrino spectra from choked jets including the relevant microphysical processes such as multipion production in pp and pγ interactions, as well as the energy losses of mesons and muons. We obtain diffuse neutrino spectra using the latest results for the luminosity function of LL GRBs. Although uncertainties are large, we confirm that LL GRBs can potentially give a significant contribution to the diffuse neutrino flux. Our results are consistent with the present IceCube data and do not violate the stacking limits on classical highluminosity GRBs. We find that high-energy neutrino production in choked jets is dominated by pγ interactions. These sources are dark in GeV-TeV gamma-rays, and do not contribute significantly to the Fermi diffuse gamma-ray background. Assuming stalled jets can launch a quasi-spherical shock in the dense medium, "precursor" TeV neutrinos emerging prior to the shock breakout gamma-ray emission can be used as smoking gun evidence for a choked jet model for LL GRBs. Our results strengthen the relevance of wide field-of-view sky monitors with better sensitivities in the 1−100 keV range.PACS numbers: 95.85. Ry, 97.60.Bw, 98.70.Rz

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“…Sec. 3.2) has attracted considerable interest [65][66][67][68][69][70] to searches for a diffuse photon flux at PeV energies. Experimental constraints on the diffuse flux of sub-PeV to sub-EeV photons are presented in Fig.…”

Section: (Left)mentioning

confidence: 99%

Report from the Multi-Messenger Working Group at UHECR-2014 Conference

Karg¹,

Álvarez-Muñiz

Kuempel

et al. 2016

Proceedings of International Symposium for Ultra-High Energy Cosmic Rays (UHECR2014)

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The IceCube, Pierre Auger and Telescope Array Collaborations have recently reported results on neutral particles (neutrons, photons and neutrinos) which complement the measurements on charged primary cosmic rays at ultra-high energy. The complementarity between these messengers and between their detections are outlined. The current status of their search is reviewed and a cross-correlation analysis between the available results is performed. The expectations for photon and neutrino detections in the near future are also presented.

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Testing the hadronuclear origin of PeV neutrinos observed with IceCube

Cited by 391 publications

References 77 publications

Ultrahigh-energy cosmic ray production by turbulence in gamma-ray burst jets and cosmogenic neutrinos

Ultrahigh-energy cosmic ray production by turbulence in gamma-ray burst jets and cosmogenic neutrinos

Choked jets and low-luminosity gamma-ray bursts as hidden neutrino sources

Report from the Multi-Messenger Working Group at UHECR-2014 Conference

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