Interpretation of the disturbance in galactic cosmic rays observed on voyager 1 beyond the heliopause

Research output: Contribution to journalArticle

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Abstract

We present a possible explanation for the transient increase in the galactic cosmic ray flux observed by Voyager 1 (V1) beyond the heliopause, in 2013 March. We suggest that this disturbance may be caused by a propagating disturbance in the interstellar magnetic field, of heliospheric origin. A model in which a magnetic disturbance, propagating outward from the heliosphere into the very-local interstellar plasma, affects the galactic cosmic rays is presented. We also discuss the possibility that this event is related to the plasma-wave event observed some 25 days later by the PWS experiment on V1.

Original languageEnglish (US)
Article numberL4
JournalAstrophysical Journal Letters
Volume794
Issue number1
DOIs
StatePublished - Oct 10 2014

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cosmic ray
disturbances
magnetic disturbances
interstellar magnetic fields
disturbance
heliosphere
plasma waves
plasma
magnetic field
experiment

Keywords

  • cosmic rays
  • Sun: heliosphere

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Interpretation of the disturbance in galactic cosmic rays observed on voyager 1 beyond the heliopause. / Jokipii, J. Randy; Kóta, J.

In: Astrophysical Journal Letters, Vol. 794, No. 1, L4, 10.10.2014.

Research output: Contribution to journalArticle

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