Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995jhu..rept.....m&link_type=abstract
Technical Report, Johns Hopkins Univ. Laurel, MD United States Applied Physics Lab.
Astronomy and Astrophysics
Astronomy
Voyager 1 Spacecraft, Voyager 2 Spacecraft, Heliosphere, Plasma Interactions, Very Low Frequencies, Solar Wind, Estimates, Cosmic Rays, Astronomy
Scientific paper
The Voyager 1 and 2 spacecraft now 45 astronomical units (AU) from Earth continue to monitor the outer heliosphere field and particles environment on a daily basis during their journey to the termination shock of the solar wind. Strong transient shocks continue to be detected in the solar wind plasma. The largest of these are associated with Global Merged Interaction Regions (GMIR's) which, in turn, block cosmic ray entry into the inner heliosphere and are apparently responsible for triggering the two major episodes of VLF radio emissions now thought to come from the heliopause. Distance estimates to the termination shock are consistent with those determined from observations of anomalous cosmic rays. Current observations and implications for heliospheric structure are discussed.
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