![\begin{figure}
\par\includegraphics[width=15.7cm,clip]{9115f_01.eps}\vspace*{5mm...
...8.eps}\hspace*{6mm}
\includegraphics[width=3.4cm,clip]{9115f_09.eps}\end{figure}](/articles/aa/full/2008/13/aa9115-07/img10.gif) |
Figure 1:
Top: magnetogram (Stokes V map) of AR 10923 with
umbral and penumbral contours overlaid. The magnetogram signal has
been reversed to treat the spot as if it were of positive
polarity. The direction to disk center is marked with an arrow. The
circles indicate a number of negative-polarity signals in the
penumbra. The magnetogram is saturated at  500
data numbers (hereafter DNs). Bottom:
 
subfields showing some of the negative-polarity patches. Usually, they are associated with a
positive-polarity structure farther from the umbra. The bipolar pairs
occur in between filaments of positive polarity (indicated with
arrows). The frame number and time of each magnetogram is given
in the title. |
| Open with DEXTER | |
In the text
![\begin{figure}
\par\includegraphics[width=4.6cm,clip]{9115f_10.eps}\hspace*{2mm}...
...2.eps}\hspace*{2mm}
\includegraphics[width=4.1cm,clip]{9115f_13.eps}\end{figure}](/articles/aa/full/2008/13/aa9115-07/img11.gif){kind=small} |
Figure 2: Time-slice diagrams for filaments #1, 3, 9, and 10. They have been created following the trajectories of the opposite-polarity patches defining the filaments. The horizontal solid lines mark the position of the gap between 9:40 and 11:00 UT. The dotted lines represent the instantaneous outer penumbral boundary. The arrows show the slopes of structures moving at 0.3, 0.5, and 1 km s-1. |
| Open with DEXTER | |
In the text
![\begin{figure}
\par\includegraphics[width=7.7cm,clip]{9115f_14.eps}\end{figure}](/articles/aa/full/2008/13/aa9115-07/img15.gif) |
Figure 3: Sketch of the penumbra showing sea-serpent field lines in between more vertical spine fields. The ovals indicate the polarity of the different structures when observed at disk center. |
| Open with DEXTER | |
In the text