Results 51 to 60 of about 42,851 (177)

The photodisintegration of cosmic ray nuclei by solar photons: the Gerasimova-Zatsepin effect revisted

open access: yes, 1998
The interesting possibility of measuring the masses of high energy cosmic ray particles by observing pairs of extensive air showers arriving at the earth nearly simultaneously was proposed some years ago by Gerasimova and Zatsepin (1960).
Akasofu   +10 more
core   +1 more source

The Distribution of Ultrahigh-energy Cosmic Rays along the Supergalactic Plane Measured at the Pierre Auger Observatory

open access: yesThe Astrophysical Journal
Ultrahigh-energy cosmic rays are known to be mainly of extragalactic origin, and their propagation is limited by energy losses, so their arrival directions are expected to correlate with the large-scale structure of the local Universe.
A. Abdul Halim   +374 more
doaj   +1 more source

Monitoring Neutron Radiation in Extreme Gamma/X-Ray Radiation Fields

open access: yesSensors, 2020
The monitoring of neutron radiation in extreme high ≈1014 (#/cm2-s) neutron/photon fields and at extremely-low (≈10−3 #/cm2-s) levels poses daunting challenges—important in fields spanning nuclear energy, special nuclear material ...
Rusi P. Taleyarkhan
doaj   +1 more source

Accelerator measurements of magnetically-induced radio emission from particle cascades with applications to cosmic-ray air showers [PDF]

open access: yes, 2016
For fifty years, cosmic-ray air showers have been detected by their radio emission. We present the first laboratory measurements that validate electrodynamics simulations used in air shower modeling.
A. Romero-Wolf   +28 more
core   +2 more sources

Point-like gamma ray sources as signatures of distant accelerators of ultra high energy cosmic rays

open access: yes, 2005
We discuss the possibility of observing distant accelerators of ultra high energy cosmic rays in synchrotron gamma rays. Protons propagating away from their acceleration sites produce extremely energetic electrons during photo-pion interactions with ...
A. Mucke   +10 more
core   +1 more source

Black Holes at Future Colliders and Beyond [PDF]

open access: yes, 2002
One of the most dramatic consequences of low-scale (~1 TeV) quantum gravity is copious production of mini black holes at future accelerators and in ultra-high-energy cosmic ray interactions. Hawking radiation of these black holes is constrained mainly to
Antoniadis   +11 more
core   +3 more sources

Neutrino Anisotropy as a Probe of Extreme Astrophysical Accelerators

open access: yesThe Astrophysical Journal
We predict that neutrino sources following the matter distribution of the Universe result in an anisotropy in the neutrino sky imprinted by the local large-scale structure (LSS). We calculate the level of this anisotropy and explore how it depends on the
Marco Stein Muzio, Noémie Globus
doaj   +1 more source

Status of the program for microwave detection of cosmic rays at the Pierre Auger observatory

open access: yesEPJ Web of Conferences, 2013
Radiation in the microwave band from the passage of charged particles through air has been detected in the laboratory. This radiation could provide a novel technique for the detection of ultra-high energy cosmic rays over large areas, with 100% duty ...
Luis P. Facal San
doaj   +1 more source

Cosmic Rays Self-arising Turbulence with Universal Spectrum −8/3

open access: yesThe Astrophysical Journal, 2023
In the inertial subrange of scales, an exact compressible turbulence universal spectrum law −8/3 for the density fluctuations of cosmic rays (CRs) in the frame of the known two-fluid model of CR dynamics is obtained.
Artem S. Chefranov   +2 more
doaj   +1 more source

Anti-GZK effect in UHECR spectrum

open access: yes, 2005
In this paper we discuss the anti-GZK effect that arises in the framework of the diffusive propagation of Ultra High Energy (UHE) protons. This effect consists in a jump-like increase of the maximum distance from which UHE protons can reach the observer.
Aloisio, R., Berezinsky, V. S.
core   +2 more sources

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