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Accession Number
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N20120009863
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Title
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Structure and Dynamics of the Corona - Heliosphere Connection.
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Publication Date
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Jul 2011
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Media Count
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16p
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Personal Author
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J. A. Linker R. Lionello S. K. Antiochos T. H. Zurbuchen V. Titov Z. Mikic
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Abstract
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Determining the source at the Sun of the slow solar wind is one of the major unsolved problems in solar and heliospheric physics. First, we review the existing theories for the slow wind and argue that they have difficulty accounting for both the observed composition of the wind and its large angular extent. A new theory in which the slow wind originates from the continuous opening and closing of narrow open field corridors, the S-Web model, is described. Support for the S-Web model is derived from MHD solutions for the quasisteady corona and wind during the time of the August 1, 2008 eclipse. Additionally, we perform fully dynamic numerical simulations of the corona and heliosphere in order to test the S-Web model as well as the interchange model proposed by Fisk and co-workers. We discuss the implications of our simulations for the competing theories and for understanding the corona - heliosphere connection, in general.
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Keywords
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Eclipses
Heliosphere
Magnetohydrodynamics
Simulation
Solar corona
Solar physics
Solar wind
Sun
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Source Agency
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National Aeronautics and Space Administration
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NTIS Subject Category
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54C - Astrophysics
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Corporate Author
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Goddard Space Flight Center, Greenbelt, MD.
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Document Type
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Journal article
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Title Note
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N/A
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NTIS Issue Number
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1223
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Contract Number
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N/A
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