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.
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| 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 | ||||||||||||
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| Subject Keywords: | climate change, atmospheric dynamics, extreme events | ||||||||||||
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| Issue or Number: | 10 | ||||||||||||
| 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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