All Figures

$\begin{figure} \par\includegraphics[width=7.7cm,clip]{fig1a.ps}\par\includegraphics[width=7.7cm,clip]{fig1b.ps}\end{figure}$ Figure 1: One-minute cadence velocity (top curves) and magnetic (bottom curves) time-series for a 4 $^{\prime \prime }$ $\times$ 4 $^{\prime \prime }$ quiet (top) and magnetic(bottom) regions.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=7.5cm,clip]{fig2.ps}\end{figure}$ Figure 2: The magnetic signal induced by a velocity oscillation of 100 m s^-1 shifting the reference wavelength tuned by the velocity offset (on x-axis). The plot is shown for a sodium MOF at $270^{\circ }$ on the D1 for the Dopplergrams obtained as log(Blue/Red) (solid) or as (Blue-Red)/(Blue+Red) (dashed).
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=4cm,clip]{fig3a.ps}\includegraphics[width=4cm,clip]{fig3b.ps}\end{figure}$ Figure 3: A Dopplergram (left) and a magnetogram (right) obtained on 30th January 1998 at Kanzelh $\ddot{\rm o}$ he. The area in the upper frame in the magnetogram is shown in Fig. 4.
Open with DEXTER

In the text

$\begin{figure} \includegraphics[width=7.9cm,clip]{fig4a.ps}\par\includegraphics[... ....9cm,clip]{fig4b.ps}\par\includegraphics[width=7.9cm,clip]{fig4c.ps}\end{figure}$ Figure 4: From the pixel-by-pixel analysis: the velocity power (top), the B-V phase difference (center) and the longitudinal magnetic power (bottom) for the selected upper area in Fig. 3 at 0.91, 2.47, 3.16, 3.78, 4.88, 5.53 mHz (from top left to bottom right). The black to white scales are: for the velocity power from 0 to 200 $({\rm m~s^{-1}})^2$ , for the phase from -180 to +180 degrees, for the magnetic power from 0 to 0.4 $\rm G^2$ .
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=7cm,clip]{fig5.ps}\end{figure}$ Figure 5: The B-V phases for a quiet region ( $B\simeq 10$ G) and the product between the velocity and magnetic power is superimposed (solid). The squares refer to an integration of the time-series over a 25'' $\times$ 25'' area and the crosses to its central pixel (4.3'' $\times$ 4.3''). When many peaks at different frequencies are present and when the magnetic elements are not resolved, the measured phases can vary widely (see the values at $\simeq$ 4.2 mHz).
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=7.2cm,clip]{fig6.ps}\end{figure}$ Figure 6: The local magnetic power for a spot region and a plage region of approximately 40'' $\times$ 40''. The five and three-minute bumps are visible.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=7cm,clip]{fig7a.ps}\vspace*{3mm} \includegraphics[width=7cm,clip]{fig7b.ps}\end{figure}$ Figure 7: The ${\ell -\nu }$ diagrams for the velocity (top) and longitudinal magnetic field power (bottom). They have been obtained from256 images acquired each minute. The scales from black to white correspond to [6 $\times$ $10^{-4}] {\rm (m~s^{-1})^{2}/Hz}$ and [4 $\times$ $10^{-8}] {\rm (G)^{2}/Hz}$ respectively. The software was provided by M. Oliviero of the OAC.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=4.3cm,clip]{fig8a.ps}\vspace*{3mm} \par\includegraphics[width=4.3cm,clip]{fig8b.ps}\end{figure}$ Figure 8: The ${\ell -\nu }$ diagrams for the B-V phase (top) and coherence (bottom) relative to the powers diagrams in Fig. 4. The black and white scale spans from $-180^{\circ }$ to $180^{\circ }$ and from 0.0 to 0.2 respectively.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=7.4cm,clip]{fig9.ps}\end{figure}$ Figure 9: Top: the ${\ell -\nu }$ diagram averaged over $\ell$ .The smooth line is a fit containing the two Gaussian components shown in the bottom panel added to a bias equal to 0.67 $\rm G^2$ .
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=7cm,clip]{fig10.ps}\end{figure}$ Figure 10: The B-V phase difference at $\ell =300$ in correspondence of a ridge (stars). The velocity power (solid curve, y-axis from 0 to 1 $\rm (m~s^{-1})^{2}/Hz$ ) and the coherence (dotted, y-axis from 0 to 0.2) are also shown.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=7.3cm,clip]{fig11.ps}\end{figure}$ Figure 11: From top to bottom: 1) the velocity ${\ell -\nu }$ diagram averaged over $\nu$ . 2) The magnetic ${\ell -\nu }$ diagram averaged over $\nu$ . 3) A RLC filter with $1/LC=\ell^2=160~000$ and R/L= 100. 4) The velocity power shown in the first panel as transmitted through the RLC filter in the third panel (this curve should reproduce the magnetic power shown in the second panel).
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=7.7cm,clip]{fig1a.ps}\par\includegraphics[width=7.7cm,clip]{fig1b.ps}\end{figure}$	Figure 1: One-minute cadence velocity (top curves) and magnetic (bottom curves) time-series for a 4 $^{\prime \prime }$ $\times$ 4 $^{\prime \prime }$ quiet (top) and magnetic(bottom) regions.
Open with DEXTER

$\begin{figure} \par\includegraphics[width=7.5cm,clip]{fig2.ps}\end{figure}$	Figure 2: The magnetic signal induced by a velocity oscillation of 100 m s^-1 shifting the reference wavelength tuned by the velocity offset (on x-axis). The plot is shown for a sodium MOF at $270^{\circ }$ on the D1 for the Dopplergrams obtained as log(Blue/Red) (solid) or as (Blue-Red)/(Blue+Red) (dashed).
Open with DEXTER

$\begin{figure} \par\includegraphics[width=4cm,clip]{fig3a.ps}\includegraphics[width=4cm,clip]{fig3b.ps}\end{figure}$	Figure 3: A Dopplergram (left) and a magnetogram (right) obtained on 30th January 1998 at Kanzelh $\ddot{\rm o}$ he. The area in the upper frame in the magnetogram is shown in Fig. 4.
Open with DEXTER

$\begin{figure} \par\includegraphics[width=7.2cm,clip]{fig6.ps}\end{figure}$	Figure 6: The local magnetic power for a spot region and a plage region of approximately 40'' $\times$ 40''. The five and three-minute bumps are visible.
Open with DEXTER

$\begin{figure} \par\includegraphics[width=7cm,clip]{fig7a.ps}\vspace*{3mm} \includegraphics[width=7cm,clip]{fig7b.ps}\end{figure}$	Figure 7: The ${\ell -\nu }$ diagrams for the velocity (top) and longitudinal magnetic field power (bottom). They have been obtained from256 images acquired each minute. The scales from black to white correspond to [6 $\times$ $10^{-4}] {\rm (m~s^{-1})^{2}/Hz}$ and [4 $\times$ $10^{-8}] {\rm (G)^{2}/Hz}$ respectively. The software was provided by M. Oliviero of the OAC.
Open with DEXTER

$\begin{figure} \par\includegraphics[width=4.3cm,clip]{fig8a.ps}\vspace*{3mm} \par\includegraphics[width=4.3cm,clip]{fig8b.ps}\end{figure}$	Figure 8: The ${\ell -\nu }$ diagrams for the B-V phase (top) and coherence (bottom) relative to the powers diagrams in Fig. 4. The black and white scale spans from $-180^{\circ }$ to $180^{\circ }$ and from 0.0 to 0.2 respectively.
Open with DEXTER

$\begin{figure} \par\includegraphics[width=7.4cm,clip]{fig9.ps}\end{figure}$	Figure 9: Top: the ${\ell -\nu }$ diagram averaged over $\ell$ .The smooth line is a fit containing the two Gaussian components shown in the bottom panel added to a bias equal to 0.67 $\rm G^2$ .
Open with DEXTER

$\begin{figure} \par\includegraphics[width=7cm,clip]{fig10.ps}\end{figure}$	Figure 10: The B-V phase difference at $\ell =300$ in correspondence of a ridge (stars). The velocity power (solid curve, y-axis from 0 to 1 $\rm (m~s^{-1})^{2}/Hz$ ) and the coherence (dotted, y-axis from 0 to 0.2) are also shown.
Open with DEXTER

$\begin{figure} \par\includegraphics[width=7.3cm,clip]{fig11.ps}\end{figure}$	Figure 11: From top to bottom: 1) the velocity ${\ell -\nu }$ diagram averaged over $\nu$ . 2) The magnetic ${\ell -\nu }$ diagram averaged over $\nu$ . 3) A RLC filter with $1/LC=\ell^2=160~000$ and R/L= 100. 4) The velocity power shown in the first panel as transmitted through the RLC filter in the third panel (this curve should reproduce the magnetic power shown in the second panel).
Open with DEXTER