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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 ...
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 shape of the extragalactic cosmic ray spectrum from galaxy clusters
(IOP Publishing, 2016-08-05)
We study the diffusive escape of cosmic rays from a central source inside a galaxy cluster to obtain the suppression in the outgoing flux appearing when the confinement times get comparable or larger than the age of the ...
Magnetic diffusion and interaction effects on ultrahigh energy cosmic rays: Protons and nuclei
(American Physical Society, 2021-09)
The flux of ultrahigh energy cosmic rays reaching the Earth is affected by the interactions with the cosmic radiation backgrounds as well as with the magnetic fields that are present along their trajectories. We combine ...
Secondary protons in the atmosphere at different latitudes
(1993-03-01)
We present a semiempirical method to study the production and propagation of atmospheric secondary protons with energy>100 Mev, moving in the vertical direction. The derived production functions are fitted by the least-square ...
Secondary protons in the atmosphere at different latitudes
(1993-03-01)
We present a semiempirical method to study the production and propagation of atmospheric secondary protons with energy>100 Mev, moving in the vertical direction. The derived production functions are fitted by the least-square ...
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 ...
Estudo da atividade solar no passado em função da radiação cósmica
(Universidade Federal de Santa MariaCentro de Ciências Naturais e Exatas, 2014-03-20)
The study about cosmic radiation arriving the Earth represents an important register of its variations, as the physical phenomena who cause these variations. In the solar system the variation is strongly modulated by the ...