Mapping the Solar Wind from its Source Region into the Outer Corona

Details Mapping the Solar Wind from its Source Region into the Outer Corona Mapping the Solar Wind from its Source Region into the Outer Corona

Nov 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000stin...0021228e&link_type=abstract

Technical Report, NASA Washington, DC United States

Physics

Remote Sensing, Solar Corona, Solar Wind, Stellar Physics, Stellar Winds, Sun, Aerospace Environments, Auroras, Ulysses Mission

Scientific paper

The solar wind not only forms the space environment of Earth and other planets, but is also the cause of many phenomena observed in the Earth's atmosphere, such as aurorae. The expansion of the coronal plasma of the Sun is characteristic to many main sequence stars, and thus provides an example for understanding stellar winds as well. In spite of its importance for both space science and stellar physics, basic solar wind properties remain essentially unresolved. Since its discovery about 50 years ago, the complexity of the Sun corona - solar wind system has complicated the interpretation of observations. Recent progress in remote sensing observations as provided for example by YOHKOH, SOHO, SPARTAN and ULYSSES as well as some ground based techniques such as Interplanetary Scintillation observations, offer a compelling opportunity to unravel the 50 year old puzzle regarding the heat source or sources that cause the expansion of the solar corona. The new era of solar wind observations initiated by SOHO and ULYSSES, have also led to a wealth of new theoretical approaches. The goal of the proposed research was to carry out an integrated study of the coronal and solar wind plasma making use of the opportunities provided by the above spacecraft, as well as plasma emission calculations and new ideas on solar wind expansion theory.

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