Effects of the galactic magnetic field upon large scale anisotropies of extragalactic Cosmic Rays - Astrophysics > High Energy Astrophysical PhenomenaReportar como inadecuado




Effects of the galactic magnetic field upon large scale anisotropies of extragalactic Cosmic Rays - Astrophysics > High Energy Astrophysical Phenomena - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Abstract: The large scale pattern in the arrival directions of extragalactic cosmicrays that reach the Earth is different from that of the flux arriving to thehalo of the Galaxy as a result of the propagation through the galactic magneticfield. Two different effects are relevant in this process: deflections oftrajectories and deacceleration by the electric field component due to thegalactic rotation. The deflection of the cosmic ray trajectories makes the fluxintensity arriving to the halo from some direction to appear reaching the Earthfrom another direction. This applies to any intrinsic anisotropy in theextragalactic distribution or, even in the absence of intrinsic anisotropies,to the dipolar Compton-Getting anisotropy induced when the observer is movingwith respect to the cosmic rays rest frame. For an observer moving with thesolar system, cosmic rays traveling through far away regions of the Galaxy alsoexperience an electric force coming from the relative motion due to therotation of the Galaxy of the local system in which the field can beconsidered as being purely magnetic. This produces small changes in theparticles momentum that can originate large scale anisotropies even for anisotropic extragalactic flux.



Autor: D. Harari, S. Mollerach, E. Roulet

Fuente: https://arxiv.org/



DESCARGAR PDF




Documentos relacionados