Physics
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufmsh23b0351h&link_type=abstract
American Geophysical Union, Fall Meeting 2006, abstract #SH23B-0351
Physics
7511 Coronal Holes, 7524 Magnetic Fields, 7529 Photosphere
Scientific paper
The solar surface boundary map plays an essential role in determining the results of the MHD simulation of the global solar corona and solar wind. In this work, we will present the MHD simulation using the synoptic frame format of the solar photospheric magnetic field and coronal-base temperature. The concept of synoptic frame is developed for the global map to contain both the long-term global components and the newly measured components. The synoptic frame is developed by Zhao et al. [1999] originally for the photospheric magnetic field. Recent improvements [Zhao et al., 2006] allow taking into account the differential rotation. Using the boundary map in this format as the boundary condition of the MHD simulation, we can now specify the time to be simulated more adequately. Recently Hayashi et al. [2006] simulated the global corona using the temperature map obtained from the analysis of the SOHO/EIT data and found that the coronal-based temperature is one of the decisive factors of the solar corona. We used the CHIANTI software to derive the coronal temperature. Combining these two features, we can specify both the magnetic field and temperature at a particular time and simulate the global solar corona more realistically. The three-dimensional solar coronal quantities simulated in this way are compared with observations, such as the shape of the coronal hole and the plasma quantities of the solar coronal streamers.
Benevolenskaya Elena E.
Hayashi Kumiko
Zhao Xiaopeng
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