A Two-temperature Solar Wind Model: Validation And Two-temperature CMEs

Details A Two-temperature Solar Wind Model: Validation And Two-temperature CMEs A Two-temperature Solar Wind Model: Validation And Two-temperature CMEs

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011spd....42.1404v&link_type=abstract

American Astronomical Society, SPD meeting #42, #14.04; Bulletin of the American Astronomical Society, Vol. 43, 2011

Astronomy and Astrophysics

Astronomy

Scientific paper

We have performed a multi-spacecraft validation study for the recently developed 3D, two-temperature, Alfven wave driven global solar wind model (B. van der Holst et al., 2010) of the Space Weather Modeling Framework (SWMF). We compare the proton state (density, temperature, and velocity) and magnetic field for solar minimum CR2077 as predicted by this model with the in-situ observations from STEREO A/B, ACE/WIND, and Venus Express. Near the Sun, we validate this model with the electron density obtained from Solar Rotational Tomography on LASCO C2 white-light images of SOHO as well as with the electron density and temperature from the Differential Emission Measure Tomography (DEMT) applied to the STEREO A/B EUVI images. Moreover, we compare ion charge state (C, O, Si, Fe) observed in-situ by ACE/SWICS with that predicted by our solar wind model. This validation study demonstrates that most of the model results for CR2077 are in range with observations. A preliminary two-temperature simulation of the December 12, 2008 coronal mass ejection (CME) is demonstrated. The heat transport is significantly different from one-temperature models.

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