Age of Cosmic‐Ray Protons Computed Using Simple Configurations of the Galactic Magnetic Field

2000 ◽  
Vol 528 (2) ◽  
pp. 789-798 ◽  
Author(s):  
M. T. Brunetti ◽  
A. Codino
Keyword(s):  
Magnetic Field ◽  
Cosmic Ray ◽  
Galactic Magnetic Field

scholarly journals Origins of Extragalactic Cosmic Ray Nuclei by Contracting Alignment Patterns induced in the Galactic Magnetic Field

2019 ◽  
Vol 210 ◽  
pp. 04004
Author(s):  
Martin Erdmann ◽  
Lukas Geiger ◽  
David Schmidt ◽  
Martin Urban ◽  
Marcus Wirtz
Keyword(s):  
Magnetic Field ◽  
Cosmic Rays ◽  
Cosmic Ray ◽  
High Energy ◽  
Ultra High Energy ◽  
Galactic Magnetic Field ◽  
High Energy Cosmic Rays ◽  
Novel Approach ◽  
Astrophysical Scenario ◽  
The Individual

We present a novel approach to search for origins of ultra-high energy cosmic rays. In a simultaneous fit to all observed cosmic rays we use the galactic magnetic field as a mass spectrometer and adapt the nuclear charges such that their extragalactic arrival directions are concentrated in as few directions as possible. During the fit the nuclear charges are constraint by the individual energy and shower depth measurements. We show in a simulated astrophysical scenario that source directions can be reconstructed even within a substantial isotropic background.

Cosmic Ray Isotropy at Energies Above 1018 eV

1993 ◽  
Vol 10 (4) ◽  
pp. 291-297
Author(s):  
A.G.K. Smith ◽  
R.W. Clay
Keyword(s):  
Magnetic Field ◽  
Cosmic Rays ◽  
Cosmic Ray ◽  
Galactic Magnetic Field ◽  
Air Shower ◽  
The Earth ◽  
Shower Array ◽  
Air Shower Array

AbstractStudies have been made of the extent to which extragalactic cosmic rays observed at the earth would be deviated by the galactic magnetic field. The distribution of these deviations is presented as a function of observed direction for two field models. Also using these two models, possible extragalactic directions are derived for the cosmic rays detected by the SUGAR giant air shower array as a basis of a possible technique for searching for extragalactic cosmic ray sources.

scholarly journals Calculations on the Cosmic Ray Anisotropy above 1017 eV

1990 ◽  
Vol 43 (3) ◽  
pp. 373 ◽  
Author(s):  
ACK Smith ◽  
RW Clay
Keyword(s):  
Magnetic Field ◽  
Cosmic Ray ◽  
Galactic Magnetic Field ◽  
High Energies ◽  
Low Levels

Possible trajectories of cosmic ray particles in our galactic magnetic field have been followed for various field models. It is found to be difficult to reconcile the observed low levels of cosmic ray anisotropy above 1018 eV with the modelled propagation. This strongly suggests a dominant extragalactic cosmic ray source at such high energies.

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