Source Abundance of Cosmic Rays

Majumder, A.R.; Tomozawa, Yukio

doi:10.1143/ptp.82.555

Cited by 7 publications

(2 citation statements)

References 4 publications

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“…¿From the expansion rate in cosmology, the exponent α can be estimated as α = 2 for radiation-dominated regime (8) and…”

Section: The Knee Energy Of Cosmic Ray Energy Spectrummentioning

confidence: 99%

Cosmic rays from AGN, the knee energy mass scale and dark matter particles

Tomozawa¹

2010

Preprint

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Following the possibility of a new mass scale at the 3 PeV knee energy of the cosmic ray energy spectrum, the author suggests that the mass for a dark matter particle should be 8.1 TeV, using GLMR supersymmetry theory . The author discusses the possibility of detecting such a signature in various observational facilities, gamma ray, neutrino and other underground detectors. An analysis of recent data from HESS yields a gamma ray peak at 7.6 ± 0.1 TeV, providing observational evidence for a dark matter particle mass consistent with the theoretical prediction. The author also suggests that the observed discontinuity in the power law index in galaxy correlation functions is the knee energy counterpart in cosmology.

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“…¿From the expansion rate in cosmology, the exponent α can be estimated as α = 2 for radiation-dominated regime (8) and…”

Section: The Knee Energy Of Cosmic Ray Energy Spectrummentioning

confidence: 99%

Cosmic rays from AGN, the knee energy mass scale and dark matter particles

Tomozawa¹

2010

Preprint

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“…Thus, due to the Boson condensation, even nuclei can be emitted in this system. [11] Secondly, the cosmic ray energy spectrum observed at the earth may not be the same as that at the sources. Using leakage, spallation and information on the chemical abundance of cosmic rays, the Chicago group has derived the power index λ of the cosmic ray energy spectrum E −λ at the sources.…”

Section: Cosmic Raysmentioning

confidence: 99%

Cosmic rays, gamma rays and neutrinos from point sources

Tomozawa¹

1993

AIP Conference Proceedings

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The suggestion has been made that the energy spectrum from point sources such as AGN (Active Galactic Nuclei) and GBHC (Galactic Black Hole Candidates) is universal, irrespective of the nature of the emitted particles. A comparison of the energy spectrum for cosmic rays at the source and */-rays from quasars obtained recently by CGRO (Compton Gamma Ray Observatory) indicates that the prediction is in agreement with the data in the average sense. This suggests that neutrinos from point sources should have a spectral index identical to that of ~/-rays for an individual point source. This prediction is also consistent with the recent obervation of neutrinos by Kamiokande and IMB in which the ratio of v~/ve is close to 1, instead of 2 as expected from atmospheric neutrinos. For a further test of the model, analysis of the time variation of 3'-ray spectra from quasars is suggested.

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High Energy Cosmic Rays, Gamma Rays and Neutrinos From Agn

Tomozawa

2008

Mod. Phys. Lett. A

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The author reviews a model for the emission of high energy cosmic rays, gamma-rays and neutrinos from AGN (Active Galactic Nuclei) that he has proposed since 1985. Further discussion of the knee energy phenomenon of the cosmic ray energy spectrum requires the existence of a heavy particle with mass in the knee energy range. A possible method of detecting such a particle in the Pierre Auger Project is suggested. Also presented is a relation between the spectra of neutrinos and gamma-rays emitted from AGN. This relation can be tested by high energy neutrino detectors such as ICECUBE, the Mediterranean Sea Detector and possibly by the Pierre Auger Project.PACS numbers: 95.85.Pw, 95.85.Ry, 98.54.Cm

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Source Abundance of Cosmic Rays

Cited by 7 publications

References 4 publications

Cosmic rays from AGN, the knee energy mass scale and dark matter particles

Cosmic rays from AGN, the knee energy mass scale and dark matter particles

Cosmic rays, gamma rays and neutrinos from point sources

High Energy Cosmic Rays, Gamma Rays and Neutrinos From Agn

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