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32 papers · 1 filter
Recent results in cosmic ray physics and their interpretation
Pasquale Blasi
The last decade has been dense with new developments in the search for the sources of Galactic cosmic rays. Some of these developments have confirmed the tight connection between c…
The Origin of Galactic Cosmic Rays
Pasquale Blasi
One century ago Viktor Hess carried out several balloon flights that led him to conclude that the penetrating radiation responsible for the discharge of electroscopes was of extrat…
The Cauchy problem in hybrid metric-Palatini f(X)-gravity
Salvatore Capozziello, Tiberiu Harko, Francisco S. N. Lobo +2
The well-formulation and the well-posedness of the Cauchy problem is discussed for {\it hybrid metric-Palatini gravity}, a recently proposed modified gravitational theory consistin…
Super-hydrodynamic limit in interacting particle systems
Gioia Carinci, Anna De Masi, Cristian Giardinà +1
This paper is a follow-up of the work initiated in [3], where it has been investigated the hydrodynamic limit of symmetric independent random walkers with birth at the origin and d…
Ultra high energy cosmic rays: implications of Auger data for source spectra and chemical composition
R. Aloisio, V. Berezinsky, P. Blasi
We use a kinetic-equation approach to describe the propagation of ultra high energy cosmic ray protons and nuclei and calculate the expected spectra and mass composition at the Ear…
Numerical solutions of the modified Lane-Emden equation in f(R)-gravity
R. Farinelli, M. De Laurentis, S. Capozziello +1
The modified Lane-Emden equation for stellar hydrostatic equilibrium in f(R)-gravity is numerically solved by using an iterative procedure. Such an integro-differential equation ca…