Propagation of Ultra-High-Energy Radiation

Sigl, Günter

doi:10.1007/3-540-45615-5_9

Cited by 3 publications

(2 citation statements)

References 193 publications

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“…fig. 4 of [12]). Since the electron and photon mfp's are similar, this implies that muon pair production by secondary photons would increase the fraction of energy loss to muons by a factor of a few beyond f µ (The further small additional contribution to muon production via eγ → eµ ± may be neglected [13]).…”

Section: µ ± Pair Production In Interactions With Cmb Photonsmentioning

confidence: 97%

EeV neutrinos associated with UHECR sources

Li,

Waxman

2007

Preprint

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Electromagnetic energy losses of charged pions and muons suppress the expected high energy, 10 18 eV, neutrino emission from sources of ultrahigh energy, 10 19 eV, cosmic-rays. We show here that 10 19 eV photons produced in such sources by neutral pion decay may escape the sources, thanks to the Klein-Nishina suppression of the pair production cross section, and produce µ ± pairs in interactions with the cosmic microwave background. The flux of muon decay neutrinos, which are expected to be associated in time and direction with the electromagnetic emission from the sources, may reach a few percent of the Waxman-Bahcall bound. Their detection may allow one to directly identify the sources of 10 19 eV cosmic-rays, and will provide the most stringent constraints on quantum-gravity-induced Lorentz violation.

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Section: µ ± Pair Production In Interactions With Cmb Photonsmentioning

confidence: 97%

EeV neutrinos associated with UHECR sources

Li,

Waxman

2007

Preprint

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“…For any particles emitted by some source in the general region of the Virgo cluster -such as M87 -the arrival directions outside the Galaxy are expected to cluster along the supergalactic plane then, and so represent an elongated band in the sky -before they pass into the magnetic field surrounding our Galaxy. Recent work is in [66,67,68,113,69,70,76,130,16].…”

Section: Magnetic Fieldsmentioning

confidence: 99%

Ultra high energy cosmic ray sources and experimental results

Biermann

Tanco

2003

Nuclear Physics B - Proceedings Supplements

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Here we discuss the latest developments in the debate, where the ultrahigh energy cosmic ray particles come from. In this brief review, we emphasize the predictions that necessarily follow from the various concepts proposed. We discuss both sources and propagation, and spend some space on the by now most conservative model, giant radio galaxies and their hot spots and jets, because it allows more steps in the reasoning to be checked, and is more tightly constrained than any other model. It has survived about forty years of debate already. We summarize the task ahead of us at the end, including the development of new technologies to observe ultra high energy cosmic rays, e.g., with the radio emission of air showers, which may lead to an alternative to the fluorescence detectors with their small duty cycle. Due to HiRes, AUGER, and the plans for EUSO, the future is bright, and the ultra high energy cosmic ray particles may yet allow us to explore new physics.

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Ultrahigh Energy Cosmic Rays: The State of the Art Before the Auger Observatory

Anchordoqui

Paul

Reucroft

et al. 2003

Int. J. Mod. Phys. A

116

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In this review we discuss the important progress made in recent years towards understanding the experimental data on cosmic rays with energies ≳ 1019eV. We begin with a brief survey of the available data, including a description of the energy spectrum, mass composition, and arrival directions. At this point we also give a short overview of experimental techniques. After that, we introduce the fundamentals of acceleration and propagation in order to discuss the conjectured nearby cosmic ray sources. We then turn to theoretical notions of physics beyond the Standard Model where we consider both exotic primaries and exotic physical laws. Particular attention is given to the role that TeV-scale gravity could play in addressing the origin of the highest energy cosmic rays. In the final part of the review we discuss the potential of future cosmic ray experiments for the discovery of tiny black holes that should be produced in the earth's atmosphere if TeV-scale gravity is realized in Nature.

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Propagation of Ultra-High-Energy Radiation

Cited by 3 publications

References 193 publications

EeV neutrinos associated with UHECR sources

EeV neutrinos associated with UHECR sources

Ultra high energy cosmic ray sources and experimental results

Ultrahigh Energy Cosmic Rays: The State of the Art Before the Auger Observatory

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