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The Effects of a Local Interstellar Magnetic Field on Voyager 1 and 2 Observations

Opher, Merav and Stone, Edward C. and Liewer, Paulett C. (2006) The Effects of a Local Interstellar Magnetic Field on Voyager 1 and 2 Observations. Astrophysical Journal, 640 (1). L71-L74. ISSN 0004-637X. doi:10.1086/503251.

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We show that an interstellar magnetic field can produce a north-south asymmetry in the solar wind termination shock. Using Voyager 1 and 2 measurements, we suggest that the angle α between the interstellar wind velocity and the magnetic field is 30° < α < 60°. The distortion of the shock is such that termination shock particles could have streamed outward along the spiral interplanetary magnetic field connecting Voyager 1 to the shock when the spacecraft was within ~2 AU of the shock. The shock distortion is larger in the southern hemisphere, and Voyager 2 could be connected to the shock when it is within ~5 AU of the shock, but with particles from the shock streaming inward along the field. Tighter constraints on the interstellar magnetic field should be possible when Voyager 2 crosses the shock in the next several years.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Stone, Edward C.0000-0002-2010-5462
Additional Information:© 2006 The American Astronomical Society. Received 2005 December 30; accepted 2006 February 7; published 2006 March 6. The authors would like to thank the staff at NASA Ames Research Center for the use of the Columbia supercomputer. Part of this work is the result of research performed at the Jet Propulsion Laboratory of the California Institute of Technology under a contract with the National Aeronautics and Space Administration.
Group:Space Radiation Laboratory
Funding AgencyGrant Number
Subject Keywords:interplanetary medium; ISM: kinematics and dynamics; solar wind; Sun: magnetic fields
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Other Numbering System NameOther Numbering System ID
Space Radiation Laboratory2007-03
Issue or Number:1
Record Number:CaltechAUTHORS:20140826-133652365
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Official Citation:The Effects of a Local Interstellar Magnetic Field on Voyager 1 and 2 Observations Merav Opher et al. 2006 ApJ 640 L71
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:48927
Deposited On:26 Aug 2014 20:54
Last Modified:10 Nov 2021 18:37

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