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.
https://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 |
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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. |
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| Group: | Space Radiation Laboratory |
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| Funders: | | Funding Agency | Grant Number |
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| NASA | 959203 | | NASA | NNX07AB02G | | NASA | NAG5-8947 | | NASA | NNX08AC04G | | NASA | NAS7-03001 |
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| Subject Keywords: | climate change, atmospheric dynamics, extreme events |
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| Other Numbering System: | | Other Numbering System Name | Other Numbering System ID |
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| Space Radiation Laboratory | 2009-01 |
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| Issue or Number: | 10 |
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| Record Number: | CaltechAUTHORS:20090821-105226001 |
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| Persistent URL: | https://resolver.caltech.edu/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.
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| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. |
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| ID Code: | 15226 |
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| Collection: | CaltechAUTHORS |
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| Deposited By: |
Tony Diaz
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| Deposited On: | 24 Aug 2009 15:46 |
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| Last Modified: | 09 Mar 2020 13:19 |
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