Ultrahigh energy nuclei in the turbulent Galactic magnetic field

2011/04/30 by Gwenael Giacinti, G. Giacinti, M. Kachelrieß +4 · 2 citations
Physics and Astronomy · #Astrophysics #Astrophysics and Cosmic Phenomena #Atomic physics #Auger #Computational physics #Cosmic ray #Dark Matter and Cosmic Phenomena #Field (mathematics) #Galactic halo #Galactic plane #Galaxy #Gamma-ray bursts and supernovae #Geometry #Halo #Magnetic field #Mechanics #Physics #Plane (geometry) #Turbulence #astro-ph.HE

paper · pdf · doi:10.1016/j.astropartphys.2011.07.006

published as Astropart. Phys. 35, 192-200 (2011) · 10 pages (2 columns), 8 figures. Published in Astroparticle Physics

openalex publication_date 2011/08/15 · arxiv created 2011/09/05 · arxiv updated 2015/03/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

In this work we study how the turbulent component of the Galactic magnetic field (GMF) affects the propagation of ultrahigh energy heavy nuclei. We investigate first how the images of individual sources and of the supergalactic plane depend on the properties of the turbulent GMF. Then we present a quantitative study of the impact of the turbulent field on (de-) magnification of source fluxes, due to magnetic lensing effects. We also show that it is impossible to explain the Pierre Auger data assuming that all ultrahigh energy nuclei are coming from Cen A, even in the most favorable case of a strong, extended turbulent field in the Galactic halo.

Citations

• On the interpretation of the cosmic-ray anisotropy at ultra-high energies
• Modeling the Galactic Magnetic Field using Rotation Measure Observations in the Galactic Disk from the CGPS, SGPS, and the VLA
• Simulating polarized Galactic synchrotron emission at all frequencies
• Observation of the Suppression of the Flux of Cosmic Rays above4×1019 eV
• UHECR observations and lensing in the magnetic field of the Virgo cluster
• Correlation of the Highest-Energy Cosmic Rays with Nearby Extragalactic Objects
• Constraints on the Galactic Magnetic Field from the Canadian Galactic Plane Survey
• Mapping deflections of extragalactic ultrahigh-energy cosmic rays in magnetohydrodynamic simulations of the local universe
• Ultra-high energy nuclei source in the direction to Virgo cluster

Cited by

• Cosmic-ray propagation with DRAGON2: I. numerical solver and astrophysical ingredients
• Identification of patterns in cosmic-ray arrival directions using dynamic graph convolutional neural networks