Zobrazeno 1 - 10
of 121
pro vyhledávání: '"Maccione Luca"'
Autor:
Nierstenhoefer Nils, Schiffer Peter, Maccione Luca, Kulbartz Jörg, Kampert Karl-Heinz, van Vliet Arjen, Sigl Günter
Publikováno v:
EPJ Web of Conferences, Vol 52, p 06006 (2013)
Recently CRPropa 2.0 has been released as a public software package to simulate the extragalactic propagation of ultra-high energy nuclei. It includes deflections by extragalactic magnetic fields and all relevant interactions with ambient photon back
Externí odkaz:
https://doaj.org/article/810b4425e18a4432b374cc773fa044af
Publikováno v:
Phys. Rev. D 89, 083007 (2014)
The PAMELA collaboration recently released the $e^+$ absolute spectrum between 1 and 300 GeV in addition to the positron fraction and the $e^-$ spectrum previously measured in the same period. We use the newly developed three-dimensional upgrade of t
Externí odkaz:
http://arxiv.org/abs/1311.5575
Autor:
Liberati, Stefano, Maccione, Luca
Publikováno v:
Phys. Rev. Lett. 112, 151301 (2014)
The emergence of a classical spacetime from any quantum gravity model is still a subtle and only partially understood issue. If indeed spacetime is arising as some sort of large scale condensate of more fundamental objects then it is natural to expec
Externí odkaz:
http://arxiv.org/abs/1309.7296
Autor:
Gaggero, Daniele, Maccione, Luca
Publikováno v:
JCAP12(2013)011
We model the CR leptonic fluxes above 20 GeV in terms of a superposition of a standard and a charge symmetric extra component, which we generically describe as power-laws in momentum. We investigate under these hypotheses the compatibility between AM
Externí odkaz:
http://arxiv.org/abs/1307.0271
The Fermi-LAT collaboration recently confirmed a discrepancy between the observed longitudinal profile of gamma-ray diffuse emission from the Galaxy and that computed with numerical codes assuming that Cosmic Rays (CRs) are produced by Galactic super
Externí odkaz:
http://arxiv.org/abs/1306.6849
We present here a major upgrade of DRAGON, a numerical package that computes the propagation of a wide set of CR species from both astrophysical and exotic origin in the Galaxy in a wide energy range from tens of MeV to tens of TeV. DRAGON takes into
Externí odkaz:
http://arxiv.org/abs/1306.6850
We take advantage of the cosmic-ray (CR) proton data collected by the PAMELA detector in several campaigns covering the period 2006-2009 to derive the local interstellar CR proton spectrum (LIS), outside the solar system. We describe the propagation
Externí odkaz:
http://arxiv.org/abs/1306.1354
Publikováno v:
Phys. Rev. Lett. 111, 021102 (2013)
We study the compatibility of Alpha Magnetic Spectrometer (AMS-02) data on the cosmic-ray (CR) positron fraction with data on the CR electron and positron spectra provided by PAMELA and Fermi LAT. We do that in terms of a novel propagation model in w
Externí odkaz:
http://arxiv.org/abs/1304.6718
Autor:
Maccione, Luca
Publikováno v:
Phys. Rev. Lett. 110, 081101 (2013)
We compute cosmic ray (CR) nuclei, proton, antiproton, electron and positron spectra below 1 TeV at Earth by means of a detailed transport description in the galaxy and in the solar system. CR spectra below 10 GeV are strongly modified by charge-sign
Externí odkaz:
http://arxiv.org/abs/1211.6905
Autor:
Meyer, Manuel, Horns, Dieter, Maccione, Luca, Mirizzi, Alessandro, Montanino, Daniele, Roncadelli, Marco
Very high energy (VHE, energy >~ 100 GeV) {\gamma}-rays originating from extragalactic sources interact with low energy photons of background radiation fields and produce electron-positron pairs. Alternatively, in the presence of ambient magnetic fie
Externí odkaz:
http://arxiv.org/abs/1211.6408