 |
Figure 1: The light curves ( left panels) and their cross-correlations ( right panels) of EV Lac and UV Cet, where the UVW1 filter for the OM was used. The lowest panel in each left graph shows the 200s-binned X-ray data, the upmost panel the UV light curve, and the middle panel the X-ray light curve at maximum correlation (shifted by the time lag) and binned to UV resolution (800 s integration time and a cadence of 1120 s). The count rate is given on the left, the luminosity on the right ordinate. The dashed vertical lines indicate the start and the end of the flare, the dotted vertical lines the time of the flare peak in the UV. The right panels show the cross-correlation between the X-ray and UV light curve for each target (see main text). The horizontal dotted lines are at 90% level of each maximum and mark the peak error interval. |
| Open with DEXTER | |
In the text
 |
Figure 2: The light curves ( left panels) and their cross-correlations ( right panels) of YZ CMi, AU Mic and AT Mic, where the UVW2 filter for the OM was used. The same explanations as in Fig. 1 hold. |
| Open with DEXTER | |
In the text
![\begin{figure}
\par\vbox{
\hspace*{0.2mm}
\includegraphics[width=8cm,height=6cm,...
...ce*{6mm}%
\includegraphics[width=8cm,height=6cm,clip]{1201f3d.ps} }
\end{figure}](/articles/aa/full/2005/08/aa1201/img36.gif) |
Figure 3:
X-ray vs. UV flare relationships. The two panels on the left use the
UVW1, the ones on the right the UVW2 filter.
The upper panels are for the luminosity increase, the lower
panels for the flare energy. Used throughout for the
regression are spectral luminosity density and spectral energy density, as
defined in Sect. 3.2. The crosses denote the
flares, their sizes corresponding to the 1 error. They are
labelled according to their identification as in Figs. 1 and 2. The solid line in the plot indicates the best fit
power-law regression. The flares have been weighted with their individual
errors for the regression. The dashed lines contour the  error,
where
is the standard deviation of the mean.
The regression values are given in Table 2. |
| Open with DEXTER | |
In the text
![\begin{figure}
\par\hspace*{5mm}\includegraphics[height=5.9cm,width=7.65cm,clip]...
...ce*{5mm}
\includegraphics[height=5.9cm,width=7.3cm,clip]{1201f4b.ps}\end{figure}](/articles/aa/full/2005/08/aa1201/img53.gif) |
Figure 4: Relationship between X-ray luminosity increase and UV flare energy. The conventions are the same as in Fig. 3. The fit parameters are given in Table 3. |
| Open with DEXTER | |
In the text