scholarly journals The Galactic magnetic field and ultrahigh-energy cosmic ray deflections

2014 ◽  
Vol 15 (4) ◽  
pp. 339-348 ◽  
Author(s):  
Glennys R. Farrar
Keyword(s):  
Magnetic Field ◽  
Cosmic Ray ◽  
Ultrahigh Energy ◽  
Galactic Magnetic Field

scholarly journals Progress in the Global Modeling of the Galactic Magnetic Field

2019 ◽  
Vol 210 ◽  
pp. 04005 ◽  
Author(s):  
Michael Unger ◽  
Glennys Farrar
Keyword(s):  
Magnetic Field ◽  
Cosmic Rays ◽  
Synchrotron Emission ◽  
Ultrahigh Energy ◽  
Galactic Magnetic Field ◽  
Global Modeling ◽  
Emission Data ◽  
The Galaxy ◽  
Ultrahigh Energy Cosmic Rays ◽  
The Impact

We discuss the global modeling of the properties of the Galactic Magnetic Field (GMF). Several improvements and variations of the model of the GMF from Jansson & Farrar (2012) (JF12) are investigated in an analysis constrained by all-sky rotation measures of extragalactic sources and polarized and unpolarized synchrotron emission data from WMAP and Planck. We present the impact of the investigated model variations on the propagation of ultrahigh-energy cosmic rays in the Galaxy

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.

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