Results 81 to 90 of about 3,083 (223)

Results from the Telescope Array and review of HiRes

EPJ Web of Conferences, 2013
A new measurement of the cosmic ray spectrum using the Telescope Array surface arrays is presented. Results on the composition of ultra-high energy cosmic rays from air-fluorescence measurements of shower maximum distributions are presented.
Sokolsky P.
doaj   +1 more source

Correlation between the UHECRs measured by the Pierre Auger Observatory and Telescope Array and neutrino candidate events from IceCube

EPJ Web of Conferences, 2016
We present the results of three searches for correlations between ultra-high energy cosmic ray events measured by Telescope Array and the Pierre Auger Observatory and high-energy neutrino candidate events from IceCube.
Christov A., Golup G., Montaruli T., Rameez M., Aublin J., Caccianiga L., Ghia P.L., Roulet E., Unger M., Sagawa H., Tinyakov P.   +10 more
doaj   +1 more source

Ultra high energy cosmic rays: the theoretical challenge [PDF]

Physics Reports, 2000
The origin of the highest-energy cosmic rays remains a mystery. The lack of a high energy cutoff in the cosmic ray spectrum together with an apparently isotropic distribution of arrival directions have strongly constrained most models proposed for the generation of these particles. An overview of the present state of theoretical proposals is presented.
openaire   +2 more sources

A Detectable Ultra-high-energy Cosmic-Ray Outburst from GRB 221009A

The Astrophysical Journal
Gamma-ray bursts (GRBs) have been proposed as one of the promising sources of ultra-high-energy cosmic rays (UHECRs), but observational evidence is still lacking.
Hao-Ning He, B. Theodore Zhang, Yi-Zhong Fan   +2 more
doaj   +1 more source

Ultra-High-energy Cosmic Ray Production in Binary Neutron Star Mergers

The Astrophysical Journal Letters
Having previously argued that binary neutron star (BNS) mergers are the principle source of ultra-high-energy cosmic rays (UHECRs), we exploit here the highly constrained initial conditions to make quantitative predictions for the cutoff energy of ...
Glennys R. Farrar
doaj   +1 more source

Constraints on the AGN flares as sources of ultra-high energy cosmic rays from the Fermi-LAT observations [PDF]

, 2020
B.A. Nizamov, M.S. Pshirkov
openalex   +1 more source

Modified Temperature–Redshift Relation and Ultra-high-energy Cosmic Ray Propagation

The Astrophysical Journal
We reexamine the interactions of ultra-high-energy cosmic rays (UHECRs) with photons from the cosmic microwave background (CMB) under a changed, locally nonlinear temperature–redshift relation T ( z ).
Janning Meinert, Leonel Morejón, Alexander Sandrock, Björn Eichmann, Jonas Kreidelmeyer, Karl-Heinz Kampert   +5 more
doaj   +1 more source

Neutrinos from Gamma Ray Bursts in the IceCube and ARA Era

EPJ Web of Conferences, 2016
In this review I discuss the ultra-high energy neutrinos (UHEN) originated from Cosmic-Rays propogation (GZK neutrinos) and from Gamma Ray Bursts (GRBs), and discuss their detectability in kilometers scale detectors like ARA and IceCube.
Guetta Dafne
doaj   +1 more source

QCD at hadron colliders and in Ultra High Energy Cosmic Rays [PDF]

, 2006
Alessandro Cafarella
openalex   +1 more source

Constraining the Position of the Knee in the Galactic Cosmic-Ray Spectrum with Ultra-high-energy Diffuse γ-Rays

, 2022
Pei-Pei Zhang, Yi-Qing Guo, Bing-Qiang Qiao, Wei Liu   +3 more
openalex   +1 more source