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Solar coronal hole simulations compared with interpretations of Yohkoh SXT observations (1995)

Tziotziou, K. ; Hearn, A.G.

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Publication Date: 2011-08-24

Description: Recent observations of coronal holes made with the soft X-ray telescope aboard Yohkoh have indicated a temperature of 1.8 approximately 2.1 x 10(exp 6) K and an emission measure of 10(exp 25.7 approximately 26.2) cm (exp -5). This is almost the same as in quiet regions of the Sun. Numerical simulations of the temperature density and velocity structure in a coronal hole. using a parameterized heating distribution have been used for a comparison with the Yohkoh observations. Models are obtained which fit the observed temperature and emission measure. with heating fluxes which are consistent with other measurements. However, the final velocity of the solar wind is very slow which indicates the necessity of another acceleration mechanism such as alfven waves.

Keywords: Solar Physics

Type: ; 63

Format: text

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