INTERPRETATION OF THE DISTURBANCE IN GALACTIC COSMIC RAYS OBSERVED ON VOYAGER 1 BEYOND THE HELIOPAUSE

Journal Article · Fri Oct 10 00:00:00 EDT 2014 · Astrophysical Journal Letters

DOI:https://doi.org/10.1088/2041-8205/794/1/L4· OSTI ID:22364942

Jokipii, J. R.; Kóta, J. ^[1]

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1. Department of Planetary Sciences, University of Arizona, Tucson, AZ 8572 (United States)

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.

• OSTI ID: 22364942
• Journal Information: Astrophysical Journal Letters, Vol. 794, Issue 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 2041-8205
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
COSMIC RADIATION
COSMIC RAY FLUX
COSMIC RAY PROPAGATION
DISTURBANCES
HELIOSPHERE
INTERSTELLAR MAGNETIC FIELDS
ORIGIN
PLASMA WAVES
SUN
TRANSIENTS
VOYAGER SPACE PROBES