Photon/proton ratio as a diagnostic tool for topological defects as the sources of extremely high-energy cosmic rays

Journal Article · Sun Nov 15 00:00:00 EST 1992 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.46.4188· OSTI ID:7002351

Aharonian, F A; Bhattacharjee, P ^[1]; Schramm, D N ^[2]

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1. The University of Chicago, 5640 S. Ellis Avenue, Chicago, Illinois 60637 (United States)
2. The University of Chicago, 5640 S. Ellis Avenue, Chicago, Illinois 60637 (United States) NASA/Fermilab Astrophysics Center, Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, Illinois 60510 (United States)

The hypothesis of topological defects (from grand unified and/or Planck scales) as the sources of extremely high-energy ({gt}10{sup 18}-eV) cosmic rays predicts an unusually high content of {gamma} rays at energies {ital E}{approx gt}10{sup 20} eV ({gamma}/{ital p}{gt}=1) and {ital E}{approx lt}10{sup 14} eV ({gamma}/{ital p}{approx gt}10{sup {minus}3}). This can be used as a signature for testing the hypothesis in forthcoming experiments.

• OSTI ID: 7002351
• Journal Information: Physical Review, D (Particles Fields); (United States), Vol. 46:10; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Pa
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMIC RADIATION
PROTON SPECTRA
GRAND UNIFIED THEORY
BACKGROUND RADIATION
COSMOLOGY
DEFECTS
GAMMA RADIATION
GAMMA SOURCES
GAMMA SPECTRA
MAGNETIC MONOPOLES
MICROWAVE RADIATION
PHOTONS
PROTON SOURCES
RADIATION SOURCES
STRING MODELS
TOPOLOGY
BOSONS
COMPOSITE MODELS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
EXTENDED PARTICLE MODEL
FIELD THEORIES
IONIZING RADIATIONS
MASSLESS PARTICLES
MATHEMATICAL MODELS
MATHEMATICS
MONOPOLES
PARTICLE MODELS
PARTICLE SOURCES
POSTULATED PARTICLES
QUARK MODEL
RADIATIONS
SPECTRA
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES
662210* - Specific Theories & Interaction Models
Particle Systematics- Unified Theories & Models- (1992-)
661320 - Auroral
Ionospheric
& Magnetospheric Phenomena- (1992-)