Physics
Scientific paper
Sep 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005sosyr..39..426p&link_type=abstract
Solar System Research, Volume 39, Issue 5, pp.426-430
Physics
Scientific paper
The Parker model is modified to describe a rapid temperature increase from the region of temperature minimum to the coronal base and to relate the electron density in the region of the temperature minimum (˜0.85×1011 cm-3 according to the modified model) to that at the orbit of the Earth (˜7.42 cm-3 according to the model). The coronal temperature reaches its maximum (1.8×106 K) at the Parker critical point; physical processes at this point are left beyond the scope of the model. It is suggested to consider the expanding solar corona as a self-heating system in which heating of the solar corona is related to the transonic regime of its expansion, which is maintained by the high coronal temperature.
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