Buscar
Mostrando ítems 31-40 de 328
Detection of a change of slope in the spectrum of heavy mass cosmic rays primaries by the Kascade-Grande experiment
(Ceske Vysoke Uceni TechnickePrague, 2013)
KASCADE-Grande is an extensive air shower experiment devoted to the study of cosmic rays in the '10 POT. 16' ÷ '10 POT. 18' eV energy range. The array comprises various detectors allowing independent measurements of the ...
Is the supernova remnant RX J1713.7-3946 a hadronic cosmic-ray accelerator?
(IOP Publishing, 2001-12)
The nonthermal supernova remnant (SNR) RX J1713.7-3946 has recently been shown to be a site of cosmic-ray (CR) electron acceleration to TeV energies. Here we present evidence that this remnant is also accelerating CR nuclei. ...
Ensemble fluctuations of the cosmic ray energy spectrum and the intergalactic magnetic field
(American Physical Society, 2015-06)
The origin of the most energetic cosmic ray particles is one of the most important open problems in astrophysics. Despite a big experimental effort done in the past years, the sources of these very energeticparticles remain ...
Reconstruction of air shower muon densities using segmented counters with time resolution
(Elsevier Science, 2016-06)
Despite the significant experimental effort made in the last decades, the origin of the ultra-high energy cosmic rays is still largely unknown. Key astrophysical information to identify where these energetic particles come ...
Search for gamma-ray emission from star-forming galaxies with Fermi LAT
(2016-08)
Recent studies have found a positive correlation between the star-formation rate of galaxies and their gamma-ray luminosity. Galaxies with a high star-formation rate are expected to produce a large amount of high-energy ...
Search for gamma-ray emission from star-forming galaxies with Fermi LAT
(2016-08)
Recent studies have found a positive correlation between the star-formation rate of galaxies and their gamma-ray luminosity. Galaxies with a high star-formation rate are expected to produce a large amount of high-energy ...
Testing the correlation of ultrahigh energy cosmic rays with high redshift sources
(American Physical Society, 2001-12)
We study the correlation between compact radio quasars or 3EG gamma-ray blazars and the arrival direction of cosmic rays above 1019 eV using an updated list of air shower detections. Our Monte Carlo simulations reveal no ...
High energy gamma rays from stellar associations
(IOP Publishing, 2004-12)
It is proposed that TeV g-rays and neutrinos can be produced by cosmic rays (CRs) through hadronic interactions in the innermost parts of the winds of massive O and B stars. Convection prevents low-energy particles from ...