![]() |
Figure 1: EUV limb brightening. Images show the limb during different solar cycle phases. Right panels represent the mean limb profile. |
Open with DEXTER |
![]() |
Figure 2: Examples of limb fit. Left, a limb profile at 17.1 nm (gray) and the fit (black). Right, the same for the 30.4 nm limb profile. |
Open with DEXTER |
![]() |
Figure 3: Time evolution of the solar radii. Points represent individual measurements. Solid curves are 28 day running means at 17.1 nm ( upper) and 30.4 nm ( lower). Straight thick lines are the weighted mean values for the period 1999-2005. The vertical bars represent the mean uncertainty for one measurement. |
Open with DEXTER |
![]() |
Figure 4: EUV radius variations compared with solar cycle indices. From top to bottom: 17.1 nm radius, 30.4 nm radius, Wolf number and flux density at 10.7 cm. All values are rescaled between [-0.5,0.5] to facilitate the comparison. |
Open with DEXTER |