PoS - Proceedings of Science
Volume 395 - 37th International Cosmic Ray Conference (ICRC2021) - Highlight Talks
Nearly a Decade of Cosmic Ray Observations in the Very Local Interstellar Medium
J.S. Rankin
Full text: pdf
Pre-published on: January 26, 2022
Published on: March 18, 2022
In 2012, the centennial year of the discovery of cosmic rays, Voyager 1 crossed the heliopause and began making the very first in-situ measurements of the surrounding interstellar medium. Joined by Voyager 2 in 2018, these twin spacecraft continue to provide critical data of cosmic rays in a surprising, previously-unexplored plasma regime. Here, we highlight some of the discoveries and insights that have emerged from nearly a decade of cosmic ray observations in the very local interstellar medium, addressing topics such as: i) the behavior of cosmic rays at the heliopause boundary, ii) the characteristics of the low-energy spectrum (down to a few MeV/nuc), iii) the discovery of a time-varying, species-dependent anisotropy, and iv) their relationship to solar-transients that pass through the heliosphere and transmit pressure waves into the VLISM.
DOI: https://doi.org/10.22323/1.395.0032
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