Figure 1: Illustration of the fitting model and the 9 free parameters discussed in the text. A non-thermal component (solid line) and two thermal components (dotted and dash-dotted) are shown. | |
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Figure 2: Spectral index versus RHESSI non-thermal photon flux at 35 keV, F_{35}. The solid line represents the linear bisector regression, given in Eq. (4). Flares with GOES class smaller than C2 are indicated with a triangle, those larger than C2 with a circle. The points outlined by a square are the events which where fitted with a broken power-law. The dotted line represents the regression for events larger than C2, and the dashed line represents the regression for events smaller than C2. Events in the shaded region would not appear in the flare list and would not be selected. The numbers refer to the event list in Table 1. These events are discussed in Sect. 3.4. | |
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Figure 3: Spectral index () versus non-thermal photon flux at 35 keV for several sub-peaks of a single flare. The dashed line represents the regression line (Eq. (7)). | |
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Figure 4: Soft X-ray flux versus non-thermal flux F_{35} at 35 keV with regression line, as given in Eq. (8). | |
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Figure 5: Spectral index versus soft X-ray flux . The data points have been labeled with 3 different symbols according to 3 flux intervals in F_{35} (units: photons ). Triangles: F_{35} in the interval [10^{-5}, 10^{-2}]; squares: F_{35} in the interval [10^{-2}, 10^{0}]; circles: F_{35} in the interval [10^{0}, 10^{2}]. The dashed line is the expected trend-line from the correlations of vs. F_{35}, and vs. F_{35}. | |
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Figure 6: RHESSI temperature T_{1} versus non-thermal flux at 35 keV with linear bisector regression line (Eq. (9)). The numbers refer to the event list in Table 1. | |
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Figure 7: Emission measure EM_{1} versus non-thermal flux at 35 keV. The dashed line indicates the linear bisector regression line (Eq. (10)). The numbers refer to the event list in Table 1. | |
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Figure 8: Maximum soft X-ray flux versus temperature. The dashed line gives the linear bisector regression to the data (Eq. (11)). The dotted line is the trend line calculated from the Feldman et al. result (Eq. (1)). | |
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Figure 9: Temperature measured by RHESSI (T_{1}) compared to GOES temperature (). The dotted line indicates the diagonal line. Crosses indicate the GOES temperature at GOES peak time, the dashed line gives the corresponding regression line. Dots give the GOES temperature measured at the same time as the RHESSI temperature with the solid line as regression line. | |
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