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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. http://resolver.caltech.edu/CaltechAUTHORS:20090821-105226001

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Abstract

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
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1029/2009GL038421DOIUNSPECIFIED
http://www.agu.org/pubs/crossref/2009/2009GL038421.shtmlPublisherUNSPECIFIED
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
Funders:
Funding AgencyGrant Number
NASA959203
NASANNX07AB02G
NASANAG5-8947
NASANNX08AC04G
NASANAS7-03001
Subject Keywords:climate change, atmospheric dynamics, extreme events
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Space Radiation Laboratory2009-01
Record Number:CaltechAUTHORS:20090821-105226001
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20090821-105226001
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
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:24 Aug 2009 15:46
Last Modified:24 Mar 2015 23:32

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