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Date: 2021 July 26
Cosmic rays (seemingly with an incorrectly represented streaming) interact mysteriously with a magnetic flux rope (MFR) at GeV particle energies. These produce detectable effects at the HAWC cosmic-ray observatory, such as Forbush-effect depletions or cosmic-ray shadows. As the efficiency of these air-shower arrays grows, our ability to remote-sense the heliospheric magnetic field in 3D and as a function of time will also gain.