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Galactic cosmic rays measured by UVS on Voyager 1 and the end of the modulation
2014
Astronomy and Astrophysics
The detectors of the UltraViolet Spectrographs (UVS) on Voyager 1/2 are recording a background that was earlier assigned to disintegrations in the RTG. We show that it arises instead from Galactic Cosmic Rays (GCRs). We show the 1992-2013 GCR flux measured by UVS on V1 and, by comparing with data from the GCR dedicated detectors, we estimate the energy range responsible for this UVS signal, around 300 MeV, and the response of UVS to the GCR anisotropy. After the abrupt jumps of May and August
doi:10.1051/0004-6361/201322705
fatcat:aorkwmkphrgh3e5sdkjzt47jsy