Ultra High Energy Cosmic Radiation: Experimental and Theoretical Status

Sigl, G.

doi:10.1063/1.2409112

Cited by 4 publications

(2 citation statements)

References 39 publications

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“…This will produce a complete model of UHECRs, which consists of a fit to the UHECR spectrum, a prediction for the GZK ν flux, and the predicted diffuse γ -ray spectrum-which must be less than the diffuse EBL at γ -ray energies (Sigl 2006).…”

Section: Gzk Neutrino Intensitymentioning

confidence: 99%

High-energy cosmology

Dermer

2007

Astrophys Space Sci

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Our knowledge of the high-energy universe is undergoing a period of rapid change as new astronomical detectors of high-energy radiation start to operate at their design sensitivities. Now is a boomtime for high-energy astrophysics, with new discoveries from Swift and HESS, results from MAGIC and VERITAS starting to be reported, the upcoming launches of the γ -ray space telescopes GLAST and AGILE, and anticipated data releases from IceCube and Auger.A formalism for calculating statistical properties of cosmological γ -ray sources is presented. Application is made to model calculations of the statistical distributions of γ -ray and neutrino emission from (i) beamed sources, specifically, long-duration GRBs, blazars, and extragalactic microquasars, and (ii) unbeamed sources, including normal galaxies, starburst galaxies and clusters. Expressions for the integrated intensities of faint beamed and unbeamed highenergy radiation sources are also derived. A toy model for the background intensity of radiation from dark-matter annihilation taking place in the early universe is constructed. Estimates for the γ -ray fluxes of local group galaxies, starburst, and infrared luminous galaxies are briefly reviewed.Because the brightest extragalactic γ -ray sources are flaring sources, and these are the best targets for sources of PeV-EeV neutrinos and ultra-high energy cosmic rays, rapidly slewing all-sky telescopes like MAGIC and an allsky γ -ray observatory beyond Milagro will be crucial for optimal science return in the multi-messenger age.C.D. Dermer ( ) Code 7653,

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Section: Gzk Neutrino Intensitymentioning

confidence: 99%

High-energy cosmology

Dermer

2007

Astrophys Space Sci

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“…The GZK γ-ray intensity can be calculated according to this formalism by convolving the redshift-dependent differential intensity with a source function that represents the emergent γ-ray spectrum after reprocessing on the background radiation field. This will produce a complete model of UHECRs, which consists of a fit to the UHECR spectrum, a prediction for the GZK ν flux, and the predicted diffuse γ-ray spectrum-which must be less than the diffuse EBL at γ-ray energies [14].…”

Section: Gzk Neutrino Intensitymentioning

confidence: 99%

Gamma Rays and Neutrinos From Blazars

Dermer¹

2004

Relativistic Astrophysics and Cosmology

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Our knowledge of the high-energy universe is undergoing a period of rapid change as new astronomical detectors of high-energy radiation start to operate at their design sensitivities. Now is a boomtime for highenergy astrophysics, with new discoveries from Swift and HESS, results from MAGIC and VERITAS starting to be reported, the upcoming launches of the γ-ray space telescopes GLAST and AGILE, and anticipated data releases from IceCube and Auger.A formalism for calculating statistical properties of cosmological γ-ray sources is presented. Application is made to model calculations of the statistical distributions of γ-ray and neutrino emission from (i) beamed sources, specifically, long-duration GRBs, blazars, and extagalactic microquasars, and (ii) unbeamed sources, including normal galaxies, starburst galaxies and clusters. Expressions for the integrated intensities of faint beamed and unbeamed high-energy radiation sources are also derived. A toy model for the background intensity of radiation from dark-matter annihilation taking place in the early universe is constructed. Estimates for the γray fluxes of local group galaxies, starburst, and infrared luminous galaxies are briefly reviewed.Because the brightest extragalactic γ-ray sources are flaring sources, and these are the best targets for sources of PeV -EeV neutrinos and ultra-high energy cosmic rays, rapidly slewing all-sky telescopes like MAGIC and an all-sky γ-ray observatory beyond Milagro will be crucial for optimal science return in the multi-messenger age.

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High-energy cosmology

Dermer¹

2007

The Multi-Messenger Approach to High-Energy Gamma-Ray Sources

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Ultra High Energy Cosmic Radiation: Experimental and Theoretical Status

Abstract: Abstract. We give a brief overview of the current experimental and theoretical status of cosmic rays above ∼ 10 17 eV. We focus on the role of large scale magnetic fields and on multi-messenger aspects linking charged cosmic ray with secondary γ−ray and neutrino fluxes.

Cited by 4 publications

References 39 publications

High-energy cosmology

High-energy cosmology

Gamma Rays and Neutrinos From Blazars

High-energy cosmology

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