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Plasma Observations from Voyager 2

Richardson, J. D. and Wang, C. and Stone, E. C. and McDonald, F. B. (2005) Plasma Observations from Voyager 2. In: Connecting Sun and Heliosphere. Special Publications. Vol.592. No.592. European Space Agency , Noordwijk, Netherlands, pp. 379-382. ISBN 92-9092-903-0.

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Voyager 2 is now beyond 75 AU and observing the descending phase of the solar cycle. Voyager 2 is the spacecraft in the best position to predict the plasma conditions at Voyager 1 (whose plasma instrument failed). We show that some of the Voyager 1 energetic particle events are associated with plasma changes observed at Voyager 2. Voyager currently observes low speeds, near 400 km/s, suggesting coronal hole flow is not observed. Since the latitudinal speed gradient which occurs in the inner heliosphere at solar minimum has not yet dev3eloped, we can use the speed decrease from Earth to Voyager 2 to determine the solar wind slowdown due to interaction with interstellar H and thus the interstellar H density at the termination shock. We find that the observed slowdown implies a larger H density that previous results.

Item Type:Book Section
Related URLs:
URLURL TypeDescription of Contents
Richardson, J. D.0000-0003-4041-7540
Stone, E. C.0000-0002-2010-5462
Additional Information:We acknowledge the use of data from the ACE science center. This work was supported by NASA contract 959203 from IPL to MIT and by grants NNSFC 403250 I 0 and 40204009
Group:Space Radiation Laboratory
Funding AgencyGrant Number
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Other Numbering System NameOther Numbering System ID
Space Radiation Laboratory2005-30
Series Name:Special Publications
Issue or Number:592
Record Number:CaltechAUTHORS:20150422-152945721
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:56891
Deposited By: Deborah Miles
Deposited On:02 May 2016 19:48
Last Modified:09 Mar 2020 13:19

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