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Short-period variation of cosmic-ray intensity and ozone density observed in the stratosphere
(1993-01-01)
The energy deposition by slowing-down of energetic ionizing particles in the atmosphere enhances the production of constituent concentration which perturbs and eventually destroys the ozone (OZ) layer. Near the Brazilian ...
The KASCADE-Grande energy spectrum of cosmic rays and the role of hadronic interaction models
(ElsevierAmsterdam, 2014-05)
Previous results obtained by KASCADE-Grande using the QGSjetII-02 hadronic interaction model have shown that the energy spectrum of cosmic rays between '10 POT. 16' eV and '10 POT. 18' eV exhibits a significant hardening ...
Interpretation of the depths of maximum of extensive air showers measured by the Pierre Auger Observatory
(Institute of Physics - IOPBristol, 2013-02)
To interpret the mean depth of cosmic ray air shower maximum and its dispersion, we parametrize those two observables as functions of the rst two moments of the lnA distribution. We examine the goodness of this simple ...
PeV neutrinos from the propagation of ultra-high energy cosmic rays
(IOP Publishing, 2013-01)
We discuss the possibility that the PeV neutrinos recently observed by IceCube are produced by the interactions of extragalactic cosmic rays during their propagation through the radiation backgrounds. We show that the ...
CENTAURUS A: THE EXTRAGALACTIC SOURCE OF COSMIC RAYS WITH ENERGIES ABOVE THE KNEE
(IOP PUBLISHING LTDBRISTOL, 2012)
The origin of cosmic rays at all energies is still uncertain. In this paper, we present and explore an astrophysical scenario to produce cosmic rays with energy ranging from below 10(15) to 3 x 10(20) eV. We show here that ...
Implications of gamma-ray observations on proton models of ultrahigh energy cosmic rays
(American Physical Society, 2016-09)
The origin of ultrahigh energy cosmic rays (UHECR) is still unknown. However, great progress has been achieved in past years due to the good quality and large statistics in experimental data collected by the current ...
KASCADE-Grande measurements of energy spectra for elemental groups of cosmic rays
(Elsevier BVAmsterdam, 2013-07)
The KASCADE-Grande air shower experiment [1] consists of, among others, a large scintillator array for measurements of charged particles, Nch, and of an array of shielded scintillation counters used for muon counting, Nµ. ...
A new method for reconstructing the muon lateral distribution with an array of segmented counters
(Elsevier Science, 2015-01)
Although the origin of ultra high energy cosmic rays is still unknown, significant progress has been achieved in last decades with the construction of large arrays that are currently taking data. One of the most important ...
Determination of the calorimetric energy in extensive air showers
(Elsevier Science BvAmsterdamHolanda, 2004)
Runaway stars as cosmic ray injectors inside molecular clouds
(Wiley, 2015-03)
Giant molecular clouds (GMCs) are a new population of gamma-ray sources, being the target of cosmic rays (CRs) – locally accelerated or not –. These clouds host very young stellar clusters where massive star formation takes ...