Global MHD Modeling of the Solar Corona and Inner Heliosphere for the Whole Heliosphere Interval

Details Global MHD Modeling of the Solar Corona and Inner Heliosphere for the Whole Heliosphere Interval Global MHD Modeling of the Solar Corona and Inner Heliosphere for the Whole Heliosphere Interval

Nov 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010hia....15..491r&link_type=abstract

Highlights of Astronomy, Volume 15, p. 491-493

Astronomy and Astrophysics

Astronomy

1

Sun: Corona, Sun: Evolution, Sun: Magnetic Fields, Sun: Solar Wind, Interplanetary Medium

Scientific paper

With the goal of understanding the three-dimensional structure of the solar corona and inner heliosphere during the “Whole Heliosphere Interval” (WHI), we have developed a global MHD solution for Carrington rotation (CR) 2068. Our model, which includes energy transport processes, such as coronal heating, conduction of heat parallel to the magnetic field, radiative losses, and the effects of Alfvén waves, is capable of producing significantly better estimates of the plasma temperature and density in the corona than have been possible in the past. With such a model, we can compute emission in extreme ultraviolet (EUV) and X-ray wavelengths, as well as scattering in polarized white light. Additionally, from our heliospheric solutions, we can deduce magnetic field and plasma parameters along specific spacecraft trajectories. We have made detailed comparisons of both remote solar and in situ observations with the model results, allowing us to: (1) Connect these disparate sets of observations; (2) Infer the global structure of the inner heliosphere; and (3) Provide support for (or against) assumptions in the MHD model, such as the empirically-based coronal heating profiles.

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