Solar Polar Imager Vision Mission Study: Advantages of High Latitude In-Situ and Coronagraphic Observations of the Corona and Solar Wind

Details Solar Polar Imager Vision Mission Study: Advantages of High Latitude In-Situ and Coronagraphic Observations of the Corona and Solar Wind Solar Polar Imager Vision Mission Study: Advantages of High Latitude In-Situ and Coronagraphic Observations of the Corona and Solar Wind

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufmsh53a1484g&link_type=abstract

American Geophysical Union, Fall Meeting 2006, abstract #SH53A-1484

Physics

2100 Interplanetary Physics

Scientific paper

Solar Polar Imager's coronagraphic observations from vantage points well out of the ecliptic plane provide a panoramic view of the solar corona, coronal mass ejections and the inner heliosphere, allowing the longitudinal structure of such features to be readily assessed. Once in final circular orbit at 0.5 AU and 75 degree inclination, SPI's three orbits per year will provide coverage of long term solar wind and coronal variations from equatorial to high latitudes. The 0.5 AU vantage point will allow us to assess solar energetic particle (SEP) distributions closer to the Sun, clarifying the source and propagation effects for SEPs. Additionally, the tracing of high latitude solar features to their in-situ counterparts will be enabled with stereo observations (either actual or time delay). In-situ observations of the latitudinal properties of the solar wind ion distributions at 0.5 AU will further our understanding of the solar wind kinetics. In this poster, we present results from the Vision Mission Study of a Solar Polar Imager mission. The SPI mission uses solar sail propulsion to place a Sun- pointed spacecraft into a high inclination 0.5 AU circular orbit around the Sun. Details of the scientific objectives (with stress on the solar wind), instrument suite, observations and mission design will be presented.

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