skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Voyager 2 observations of plasmas and flows out to 104 AU

Abstract

Voyager 2 has crossed through 20 AU of the heliosheath; assuming the same heliosheath thickness as at Voyager 1, it is now two-thirds of the way to the heliopause. The plasma data are generally of good quality, although the increasing flow angle of the plasma makes analysis more difficult. The average plasma speed has remained constant but the flow angles have increased to almost 60° in the RT plane and to almost 30° in the RN plane. The average density and thermal speed have been constant since a density increase observed in 2011. Comparison of V2 plasma flows derived from plasma science experiment (PLS) data and Low Energy Charged Particle (LECP) proton anisotropies give good agreement except when heavy ion contributions or non-convective proton anisotropies are observed in the LECP data.

Authors:
 [1];  [2]
  1. Kavli Center for Astrophysics and Space Science, Massachusetts Institute of Technology, Cambridge, MA 02139 (United States)
  2. Applied Physics Laboratory, Johns Hopkins University, Laurel, MD (United States)
Publication Date:
OSTI Identifier:
22365087
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal
Additional Journal Information:
Journal Volume: 792; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0004-637X
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ANISOTROPY; DENSITY; HEAVY IONS; HELIOSPHERE; PLASMA; PROTONS; SOLAR WIND; SUN; THICKNESS; VOYAGER SPACE PROBES

Citation Formats

Richardson, J. D., and Decker, R. B., E-mail: jdr@space.mit.edu, E-mail: robert.decker@apljhu.edu. Voyager 2 observations of plasmas and flows out to 104 AU. United States: N. p., 2014. Web. doi:10.1088/0004-637X/792/2/126.
Richardson, J. D., & Decker, R. B., E-mail: jdr@space.mit.edu, E-mail: robert.decker@apljhu.edu. Voyager 2 observations of plasmas and flows out to 104 AU. United States. doi:10.1088/0004-637X/792/2/126.
Richardson, J. D., and Decker, R. B., E-mail: jdr@space.mit.edu, E-mail: robert.decker@apljhu.edu. Wed . "Voyager 2 observations of plasmas and flows out to 104 AU". United States. doi:10.1088/0004-637X/792/2/126.
@article{osti_22365087,
title = {Voyager 2 observations of plasmas and flows out to 104 AU},
author = {Richardson, J. D. and Decker, R. B., E-mail: jdr@space.mit.edu, E-mail: robert.decker@apljhu.edu},
abstractNote = {Voyager 2 has crossed through 20 AU of the heliosheath; assuming the same heliosheath thickness as at Voyager 1, it is now two-thirds of the way to the heliopause. The plasma data are generally of good quality, although the increasing flow angle of the plasma makes analysis more difficult. The average plasma speed has remained constant but the flow angles have increased to almost 60° in the RT plane and to almost 30° in the RN plane. The average density and thermal speed have been constant since a density increase observed in 2011. Comparison of V2 plasma flows derived from plasma science experiment (PLS) data and Low Energy Charged Particle (LECP) proton anisotropies give good agreement except when heavy ion contributions or non-convective proton anisotropies are observed in the LECP data.},
doi = {10.1088/0004-637X/792/2/126},
journal = {Astrophysical Journal},
issn = {0004-637X},
number = 2,
volume = 792,
place = {United States},
year = {2014},
month = {9}
}