Ultra high energy cosmic rays and possible signature of black strings

Ultra high energy cosmic rays (UHECRs) probably originate in extreme conditions in which extra dimension effects might be important. In this paper we calculate the correction in black hole accretion mechanisms due to extra dimension effects in the static and rotating cases. A parametrization of the...

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Bibliographic Details
Published in:Journal of cosmology and astroparticle physics 2016-03, Vol.2016 (3), p.14-14
Main Authors: Anjos, Rita C. dos, Coimbra-Araújo, Carlos H., Rocha, Roldão da, de Souza, Vitor
Format: Article
Language:English
Subjects:
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
BLACK HOLES
COMPARATIVE EVALUATIONS
CORRECTIONS
COSMIC RADIATION
COSMIC RAY FLUX
EEV RANGE
GAMMA RADIATION
GEV RANGE
KERR METRIC
LUMINOSITY
MASS
STAR ACCRETION
TEV RANGE
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Summary:Ultra high energy cosmic rays (UHECRs) probably originate in extreme conditions in which extra dimension effects might be important. In this paper we calculate the correction in black hole accretion mechanisms due to extra dimension effects in the static and rotating cases. A parametrization of the external Kerr horizons in both cases is presented and analysed. We use previous calculations of upper limits on the UHECR flux to set limits on the UHECR production efficiency of nine sources. The upper limit on the UHECR luminosity calculation is based on GeV-TeV gamma-ray measurements. The total luminosity due to the accretion mechanism is compared to the upper limit on UHECRs. The dependence of the UHECR production efficiency upper limit on black hole mass is also presented and discussed.
ISSN:1475-7516
1475-7516
DOI:10.1088/1475-7516/2016/03/014