All Figures

$\begin{figure} \par\resizebox{8.8cm}{!}{\includegraphics{7829fig1.eps}} \end{figure}$ Figure 1: Continuum intensity images from SOHO/MDI showing the main sunspots belonging to active regions NOAA AR 0330 ( top) and AR 9697 ( bottom). The field-of-view of both frames is about $70''\times 70''$ . The three white Windows, I, II and III, denote sub-areas of the inner penumbral regions where dark features with enhanced magnetogram signals move toward the umbra (see Figs. 2, 4 and 6). The solid lines "AB'' and "CD'' cut the penumbrae from the inner to the outer boundary. Time slices of measured quantities along these lines are shown in Figs. 3 and 5. The arrows point to the disk center.
Open with DEXTER

In the text

$\begin{figure} \par\resizebox{8.5cm}{!}{\includegraphics{7829fig2.eps}} \end{figure}$ Figure 2: Time sequence of continuum images ( left column) and the corresponding magnetograms ( right column) in the field-of-view ( $9''\times~ 6''$ ) of Window I marked in Fig. 1. The continuum intensity contours are also overplotted on the corresponding magnetograms. The dynamic ranges are from 1400 counts pixel^-1to 2200 counts pixel^-1 for the continuum images and from 400 G to 1100 G for the magnetograms. The arrows are described in the text.
Open with DEXTER

In the text

$\begin{figure} \par\resizebox{12cm}{!}{\includegraphics{7829fig3.eps}} \end{figure}$ Figure 3: Time slice maps taken from the continuum images ( left), the corresponding magnetograms (middle) and Dopplergrams ( right), respectively. For each map, the X-axis represents the distance ( $\sim$ 14 Mm) from "A'' to "B'' (see Fig. 1), which cuts the penumbra from the inner to the outer boundary ( left to right). The Y-axis denotes time, running from 2003 Apr. 9, 14:20 UT to Apr. 10, 00:20 UT ( from bottom to top). The upper frames show original data, with the color scale ranging from 1200 counts pixel^-1to 2400 counts pixel^-1 for the continuum map, from 150 G to 1000 G for the magnetogram map, and from -180 m s^-1 (blue and black, blue shift) to 180 m s^-1 (red and yellow, red shift) for the Dopplergram map. The lower frames display relative signals which are obtained after subtracting a second-degree polynomial surface fit from the original data. The dynamic ranges are from -100 counts pixel^-1 to 100 counts pixel^-1 for the continuum map, from -100 G to 100 G for the magnetogram map, and from -120 m s^-1 to 120 m s^-1 for the Dopplergram map. The 80 G contour overplotted on all time slices, refers to the filtered magnetogram signal in the lower-middle map. The vertical white lines on the lower maps separate inward moving magnetic features (denoted by "M1'' and "M2'') from those moving outward. The dotted line and the arrows are described in the text.
Open with DEXTER

In the text

$\begin{figure} \par\resizebox{12cm}{!}{\includegraphics{7829fig4.eps}} \end{figure}$ Figure 4: Time sequence of images in the subfield marked by Window II in Fig. 1 ( $10''\times~5''$ ) showing the evolution of a real feature. From left to right: continuum images, the corresponding magnetograms and relative magnetograms, which are obtained after subtracting a second-degree polynomial surface fit from the original magnetograms. Arrows in the left column point to a dark feature, others to the corresponding inward moving magnetic enhancement "M1'' (see Fig. 3).
Open with DEXTER

In the text

$\begin{figure} \par\resizebox{12cm}{!}{\includegraphics{7829fig5.eps}} \end{figure}$ Figure 5: Same as the lower 3 frames in Fig. 3 but for the main spot of active region NOAA AR 9697. The X-axis represents the distance ( $\sim$ 14 Mm, from "C'' to "D'' in Fig. 1) from the inner to outer penumbral boundary ( left to right). The Y-axis denotes the time running from 2001 Nov. 17, 19:56 UT to Nov. 18, 05:55 UT ( bottom to top). "M'' indicates an inward moving magnetic feature, the black arrow its direction of motion, the white arrow an outward moving feature.
Open with DEXTER

In the text

$\begin{figure} \par\resizebox{12cm}{!}{\includegraphics{7829fig6.eps}} \end{figure}$ Figure 6: Same as Fig. 4, but for the subfield contained within Window III ( $24''\times 12''$ ) in Fig. 1. The arrows in the left and the right columns mark an inward moving dark structure and the correspong inward moving magnetic element "M'' (see Fig. 5), respectively, and arrows in the middle column an outward moving magnetic element "m''.
Open with DEXTER

In the text

$\begin{figure} \par\resizebox{12cm}{!}{\includegraphics{7829fig6.eps}} \end{figure}$	Figure 6: Same as Fig. 4, but for the subfield contained within Window III ( $24''\times 12''$ ) in Fig. 1. The arrows in the left and the right columns mark an inward moving dark structure and the correspong inward moving magnetic element "M'' (see Fig. 5), respectively, and arrows in the middle column an outward moving magnetic element "m''.
Open with DEXTER