We present version 2 of the DRAGON code designed for computing realistic predictions of the CR densities in the Galaxy. The code numerically solves the interstellar CR transport equation (including inhomogeneous and anisotropic diffusion, either in space and momentum, advective transport and energy losses), under realistic conditions. The new version includes an updated numerical solver and several models for the astrophysical ingredients involved in the transport equation. Improvements in the accuracy of the numerical solution are proved against analytical solutions and in reference diffusion scenarios. The novel features implemented in the code allow to simulate the diverse scenarios proposed to reproduce the most recent measurements of local and diffuse CR fluxes, going beyond the limitations of the homogeneous galactic transport paradigm. To this end, several applications using DRAGON2 are presented as well. This new version facilitates the users to include their own physical models by means of a modular C++ structure. © 2017 IOP Publishing Ltd and Sissa Medialab srl.

Cosmic-ray propagation with DRAGON2: I. numerical solver and astrophysical ingredients / Evoli, C.; Gaggero, Daniele; Vittino, A.; Di Bernardo, G.; Di Mauro, M.; Ligorini, A.; Ullio, Piero; Grasso, D.. - In: JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS. - ISSN 1475-7516. - 2017:02(2017), pp. 1-62. [10.1088/1475-7516/2017/02/015]

Cosmic-ray propagation with DRAGON2: I. numerical solver and astrophysical ingredients

Gaggero, Daniele;Ullio, Piero;
2017

Abstract

We present version 2 of the DRAGON code designed for computing realistic predictions of the CR densities in the Galaxy. The code numerically solves the interstellar CR transport equation (including inhomogeneous and anisotropic diffusion, either in space and momentum, advective transport and energy losses), under realistic conditions. The new version includes an updated numerical solver and several models for the astrophysical ingredients involved in the transport equation. Improvements in the accuracy of the numerical solution are proved against analytical solutions and in reference diffusion scenarios. The novel features implemented in the code allow to simulate the diverse scenarios proposed to reproduce the most recent measurements of local and diffuse CR fluxes, going beyond the limitations of the homogeneous galactic transport paradigm. To this end, several applications using DRAGON2 are presented as well. This new version facilitates the users to include their own physical models by means of a modular C++ structure. © 2017 IOP Publishing Ltd and Sissa Medialab srl.
2017
02
1
62
015
https://arxiv.org/abs/1607.07886
http://cdsads.u-strasbg.fr/abs/2017JCAP...02..015E
Evoli, C.; Gaggero, Daniele; Vittino, A.; Di Bernardo, G.; Di Mauro, M.; Ligorini, A.; Ullio, Piero; Grasso, D.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.11767/48790
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