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- Title
On the Very Local Interstellar Spectra for Helium, Positrons, Antiprotons, Deuteron, and Antideuteron.
- Authors
Bisschoff, D.; Aslam, O. P. M.; Ngobeni, M. D.; Mikhailov, V. V.; Boezio, M.; Munini, R.; Potgieter, M. S.
- Abstract
Very local interstellar spectra (vLIS's) for protons and total Helium (He) were observed in situ by Voyager 1 below about 340 MeV/ since it had moved across the heliopause (HP). Together with high precision PAMELA and AMS observations at the Earth, we previously reported on new vLIS calculated from 1 MeV to 100 GeV for protons, electrons, total He, Oxygen, Carbon, and Boron. We now follow this up to report on the vLIS's for positrons and for the isotopes He-3, He-4, and Deuteron (H-2) by combining computations with the galactic propagation code, GALPROP, and our 3D modulation model for GCRs in the heliosphere as done previously. Similarly, we also have computed updates of the vLIS's for antiprotons and antideuteron. We assume that the modulation processes between the HP and the Earth for protons and other GCR nuclei are essentially similar, which is also the case for electrons and positrons, except for particle drifts of oppositely charged particles. The procedures followed to obtain these updates are summarized and a compilation of the mentioned vLIS's is presented.
- Subjects
POSITRONS; HELIUM; HELIOSPHERE; PROTONS; ELECTRONS; ACCELERATOR mass spectrometry; ANTIPROTONS; DEUTERONS
- Publication
Physics of Atomic Nuclei, 2021, Vol 84, Issue 6, p1121
- ISSN
1063-7788
- Publication type
Article
- DOI
10.1134/S1063778821130068