http://arxiv.org/abs/2202.06780
In the first part of our study, we consider synchrotron emission from electrons in the Galactic halo region. Utilising a simple analytical expression for the non-thermal electron distribution and a toy magnetic field model, we simulate polarised synchrotron emission maps at 30~GHz. By comparing these maps with observational data, we obtain constraints on the parameters of our toy magnetic field model. In the second half of our study, we use the range of parameter values obtained for our toy magnetic field model, and determine the arrival directions and suppression factors of ultra high energy cosmic rays (UHECRs) from potential sources at different locations. Our model predicts high suppression levels for UHECRs up to 5% and large spread angles for parameter sets obtained from 1{\sigma} constraints. These deductions form a convincing argument for incorporating Galactic halo bubbles in Galactic magnetic field modelling.
V. Shaw, A. Vliet and A. Taylor
Tue, 15 Feb 22
74/75
Comments: 11 pages, 4 figures
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