Prediction of Solar Wind Speed and B_r using CSSS Model

Details Prediction of Solar Wind Speed and B_r using CSSS Model Prediction of Solar Wind Speed and B_r using CSSS Model

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufmsh42b0525b&link_type=abstract

American Geophysical Union, Fall Meeting 2003, abstract #SH42B-0525

Physics

2164 Solar Wind Plasma, 2169 Sources Of The Solar Wind, 7509 Corona, 7513 Coronal Mass Ejections

Scientific paper

The Current--Sheet Source Surface (CSSS) model developed by Zhao and Hoeksema (1995) has been shown to reproduce the radial variation of non--radial mid--latitude helmet streamers between 2.5 and 30 R_sun. The CSSS model has the advatage of a cusp surface at the cusp point of coronal streamers, which divides the corona into three regions, one bounded by the photosphere and the cusp surface, second, between the cusp surface and the source surface located at 15 R_sun, and the third one, beyond the source surface. In the model, the magnetic field between the cusp surface and the source surface are all open but not necessarily radial. Also, the source surface, placed at 15 R_sun, is closer to the Alfven critical point than the one in traditional Potential Field Source Surface model. Moreover, the CSSS model takes horizontal currents in the corona into consideration. The interplanetary magnetic field (IMF) observed by Ulysses does not show a latitudinal variation which again was successfully obtained by CSSS model.We present the preliminary results of the prediction of solar wind speed and the interplanetary magnetic field B_r using the CSSS model.

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