2019/07/14 by Jorge F. Soriano, Luis A. Anchordoqui, Soriano, Jorge F. +3
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Dark Matter and Cosmic Phenomena #Solar and Space Plasma Dynamics
paper · pdf · doi:10.48550/arxiv.1907.06207
Auger data show evidence for a correlation between ultrahigh-energy cosmic\nrays (UHECRs) and nearby starburst galaxies. This intriguing correlation is\nconsistent with data collected by the Telescope Array, which have revealed a\nmuch more pronounced directional ``hot spot'' in arrival directions not far\nfrom the starburst galaxy M82. In this work, we assume starbursts are sources\nof UHECRs and investigate the prospects to use the observed distribution of\nUHECR arrival directions to constrain Galactic magnetic field models. We show\nthat if the Telescope Array hot spot indeed originates from M82, UHECR data\nwould place a strong constraint on the coherent and turbulent components of the\nGalactic magnetic field.\n