- Conference date: 25-30 Jun 1995
- Location: Dana Point, California (USA)
We review the observed properties of the solar wind in the outer heliosphere, including observations from Voyager and the Pioneers and also from inner heliospheric probes as appropriate. These observations are crucial to modeling of the heliosphere and its interactions with the interstellar medium, since the solar wind ram pressure and its temporal variations are important in understanding the distance to the termination shock and heliopause and how those boundaries might vary in time. We focus on results since Solar Wind 7. Among the issues we discuss are: (1) the time scales for and statistical properties of variations in the ram pressure in the outer heliosphere, and how those variations might affect the morphology of the heliospheric/interstellar medium interface; (2) the question of possible solar wind slowing in the outer heliosphere due to the pick-up of interstellar ions; (3) the issue of whether there is bulk heating of the solar wind associated either with interstellar ion pick-up or with continuing heating due to stream-stream interactions; (4) evidence for latitudinal variations in solar wind properties; and (5) the 1.3 year periodicities apparent in the outer heliosphere and the close correspondence of these periodicities with similar variations observed in the inner heliosphere.
- Solar wind
- Heliosphere interstellar medium interactions
- Interstellar medium
- Solar properties
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