Three component model of cosmic ray spectra  from 10 GeV to 100 PeV

Zatsepin, V. I.; Sokolskaya, N. V.

doi:10.1051/0004-6361:20065108

Cited by 152 publications

(143 citation statements)

References 17 publications

(15 reference statements)

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“…Consequently, the magnitude of the prompt component strongly depends on the primary model. Except for the proposal by Zatsepin and Sokolskaya [35], each of the flux assumptions can be reconciled with the data without a major spectral adjustement.…”

Section: Energy Spectrummentioning

confidence: 98%

“…A well-known proposal by Hillas postulates two galactic sources, one accounting for the knee, the other for the presumptive knee-like feature at 300 PeV [34]. Another model, by Zatsepin and Sokolskaya, identifies three distinct types of galactic sources to account for the flux up to 100 PeV [35]. The hardening of the spectrum around the "ankle" at several EeV can be described elegantly by a pure protonic flux and its interaction with CMB radiation [36] or, more in line with recent experimental results, in terms of separate light and heavy components [37].…”

Section: Cosmic Rays In the Icecube Energy Rangementioning

confidence: 99%

See 1 more Smart Citation

Characterization of the atmospheric muon flux in IceCube

Aartsen¹,

Abraham²,

Ackermann³

et al. 2016

Astroparticle Physics

101

117

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Muons produced in atmospheric cosmic ray showers account for the by far dominant part of the event yield in large-volume underground particle detectors. The IceCube detector, with an instrumented volume of about a cubic kilometer, has the potential to conduct unique investigations on atmospheric muons by exploiting the large collection area and the possibility to track particles over a long distance. Through detailed reconstruction of energy deposition along the tracks, the characteristics of muon bundles can be quantified, and individual particles of exceptionally high energy identified. The data can then be used to constrain the cosmic ray primary flux and the contribution to atmospheric lepton fluxes from prompt decays of short-lived hadrons.In this paper, techniques for the extraction of physical measurements from atmospheric muon events are described and first results are presented. The multiplicity spectrum of TeV muons in cosmic ray air showers for primaries in the energy range from the knee to the ankle is derived and found to be consistent with recent results from surface detectors. The single muon energy spectrum is determined up to PeV energies and shows a clear indication for the 2 emergence of a distinct spectral component from prompt decays of short-lived hadrons. The magnitude of the prompt flux, which should include a substantial contribution from light vector meson di-muon decays, is consistent with current theoretical predictions.The variety of measurements and high event statistics can also be exploited for the evaluation of systematic effects. In the course of this study, internal inconsistencies in the zenith angle distribution of events were found which indicate the presence of an unexplained effect outside the currently applied range of detector systematics. The underlying cause could be related to the hadronic interaction models used to describe muon production in air showers.

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Section: Energy Spectrummentioning

confidence: 98%

Section: Cosmic Rays In the Icecube Energy Rangementioning

confidence: 99%

Characterization of the atmospheric muon flux in IceCube

Aartsen¹,

Abraham²,

Ackermann³

et al. 2016

Astroparticle Physics

101

117

View full text Add to dashboard Cite

show abstract

“…Additional flux variants are calculated using the analytic air shower evolution code of [46][47][48]. The cosmic spectrum variants considered are the Gaisser-Hillas [45], Zatsepin-Sokolskaya [49], and Poly-gonato models [50]. The hadronic models considered are QGSJET-II-4 [51] and SIBYILL2.3 [52].…”

Section: Prl 117 071801 (2016) P H Y S I C a L R E V I E W L E T T Ementioning

confidence: 99%

Searches for Sterile Neutrinos with the IceCube Detector

Aartsen¹,

Abraham²,

Ackermann³

et al. 2016

Phys. Rev. Lett.

240

350

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The IceCube neutrino telescope at the South Pole has measured the atmospheric muon neutrino spectrum as a function of zenith angle and energy in the approximate 320 GeV to 20 TeV range, to search for the oscillation signatures of light sterile neutrinos. No evidence for anomalous $\nu_\mu$ or $\bar{\nu}_\mu$ disappearance is observed in either of two independently developed analyses, each using one year of atmospheric neutrino data. New exclusion limits are placed on the parameter space of the 3+1 model, in which muon antineutrinos would experience a strong MSW-resonant oscillation. The exclusion limits extend to $\mathrm{sin}^2 2\theta_{24} \leq$ 0.02 at $\Delta m^2 \sim$ 0.3 $\mathrm{eV}^2$ at the 90\% confidence level. The allowed region from global analysis of appearance experiments, including LSND and MiniBooNE, is excluded at approximately the 99\% confidence level for the global best fit value of $|$U$_{e4}|^2$.Comment: 10 pages, 5 figure

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“…To begin with, a break in α could arise from a modification of the conventional diffusive shock acceleration (DSA) scheme, as suggested by Malkov et al (2012) and Ohira & Ioka (2011). In the same vein, the possibility of different classes of CR sources has been proposed some time ago by Stanev et al (1993) and Zatsepin & Sokolskaya (2006); for instance, cosmic rays accelerated in the magnetized winds of exploding Wolf-Rayet and red supergiant stars could have a double spectrum, with a hard component produced in the polar cap regions of these objects. According to Biermann et al (2010), this hard component would take over the smooth one above a few hundred GeV, hence the observed break in the proton and helium spectra.…”

Section: Introductionmentioning

confidence: 99%

TeV cosmic-ray proton and helium spectra in the myriad model

Bernard

Delahaye

Keum

et al. 2013

A&A

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Context. Recent measurements of cosmic ray proton and helium spectra show a hardening above a few hundred GeV. This excess is hard to understand in the framework of the conventional models of Galactic cosmic ray production and propagation. Aims. We propose here to explain this anomaly by the presence of local sources (myriad model). Methods. Cosmic ray propagation is described as a diffusion process taking place inside a two-zone magnetic halo. We calculate the proton and helium fluxes at the Earth between 50 GeV and 100 TeV. As an improvement over a similar analysis, we consistently derive these fluxes by taking both local and remote sources for which a unique injection rate is assumed into account. Results. We find cosmic ray propagation parameters compatible with B/C measurements for which the proton and helium spectra agree remarkably with the PAMELA and CREAM measurements over four decades in energy.

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Three component model of cosmic ray spectra from 10 GeV to 100 PeV

Cited by 152 publications

References 17 publications

Characterization of the atmospheric muon flux in IceCube

Characterization of the atmospheric muon flux in IceCube

Searches for Sterile Neutrinos with the IceCube Detector

TeV cosmic-ray proton and helium spectra in the myriad model

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