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Plasma flows in the heliosheath

Richardson, J. D. and Stone, E. C. and Kasper, J. C. and Belcher, J. W. and Decker, R. B. (2009) Plasma flows in the heliosheath. Geophysical Research Letters, 36 (10). L10102. ISSN 0094-8276. doi:10.1029/2009GL038421.

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Voyager 2 is making the first plasma measurements in the heliosheath. The radial flow speeds in the heliosheath vary between 80 and 200 km/s with an average speed of 138 km/s. The flow in the T (azimuthal) direction is fairly constant and averages about 48 km/s; the flow direction is consistent with flow away from the heliospheric nose. Flow in the N (meridional) direction is also away from the nose and averages −14 km/s. These flows suggest that the shock is blunter in the T than in the N direction, so that the heliosphere is wider than it is high. The flow in the RN plane has quasi-periodic oscillation with a period of 110 days and an amplitude of 21 km/s. The oscillation in flow angle is about 6° in the RN plane and 17° in the TN plane and may result from periodic variations of the termination shock normal direction.

Item Type:Article
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URLURL TypeDescription
Richardson, J. D.0000-0003-4041-7540
Stone, E. C.0000-0002-2010-5462
Kasper, J. C.0000-0002-7077-930X
Additional Information:© 2009 American Geophysical Union. Received 30 March 2009; accepted 21 April 2009; published 21 May 2009. The work at MIT was supported under NASA contract 959203 from the Jet Propulsion Laboratory to the Massachusetts Institute of Technology and NASA grants NAG5-8947 and NNX08AC04G. The work at JHU/APL was supported by the Voyager Interstellar Mission under NASA grant NNX07AB02G. The work at Caltech was supported by NASA grant NAS7-03001.
Group:Space Radiation Laboratory
Funding AgencyGrant Number
Subject Keywords:climate change, atmospheric dynamics, extreme events
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Other Numbering System NameOther Numbering System ID
Space Radiation Laboratory2009-01
Issue or Number:10
Record Number:CaltechAUTHORS:20090821-105226001
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Official Citation:Richardson, J. D., E. C. Stone, J. C. Kasper, J. W. Belcher, and R. B. Decker (2009), Plasma flows in the heliosheath, Geophys. Res. Lett., 36, L10102, doi:10.1029/2009GL038421.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:15226
Deposited By: Tony Diaz
Deposited On:24 Aug 2009 15:46
Last Modified:08 Nov 2021 23:17

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