July 29, 2015 to August 6, 2015
World Forum
Europe/Amsterdam timezone

Cosmic Rays Propagation with HelMod: Difference between forward-in-time and backward-in-time approaches

Aug 5, 2015, 3:30 PM
15m
Mississippi (World Forum)

Mississippi

World Forum

Churchillplein 10 2517 JW Den Haag The Netherlands
Oral contribution SH-TH Parallel SH 09 Modulation II

Speaker

Stefano Della Torre (Universita & INFN, Milano-Bicocca (IT))

Description

The cosmic rays modulation inside the heliosphere, is well described by a transport equation introduced by Parker in 1965. To solve this equation several approaches were followed in the past. Recently the Monte Carlo approach become widely used in force of his advantages with respect to other numerical methods. In the Monte Carlo approach the transport equation is associated to a fully equivalent set of Stochastic Differential Equations. This set is used to describe the stochastic path of quasi-particle from a source, e.g. the interstellar medium, to a specific target, e.g. a detector at Earth. In this work we present both the Forward-in-Time and Backward-in-Time Monte Carlo solutions. We study performances of the numerical solutions as well the precision of both methods. We discuss advantages and disadvantages of the two approaches and the differences with respect to other numerical solutions. Finally we present how both methods were implemented in the HelMod Code for the study of cosmic rays modulation in the heliosphere.
Collaboration -- not specified --
Registration number following "ICRC2015-I/" 430

Primary author

Stefano Della Torre (Universita & INFN, Milano-Bicocca (IT))

Co-authors

Davide Grandi (Universita & INFN, Milano-Bicocca (IT)) Davide Rozza (Universita & INFN, Milano-Bicocca (IT)) Giuseppe La Vacca (Universita & INFN, Milano-Bicocca (IT)) Marian Putis (Pavol Jozef Safarik University (SK)) Massimo Gervasi (Universita & INFN, Milano-Bicocca (IT)) Matteo Boschini (Univ. degli Studi Milano-Bicocca (IT)) Mauro Tacconi (Universita & INFN, Milano-Bicocca (IT)) Dr Pavol Bobik (Institute of Experimental Physics. Slovak Academy of Sciences) Pier-Giorgio Rancoita (Universita & INFN, Milano-Bicocca (IT)) Simonetta Pensotti (Univ. degli studi Milano-Bicocca)

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