All Figures

$\begin{figure} \par\includegraphics[angle=270,width=10.6cm,clip]{0349fi1.ps}\end{figure}$ Figure 1: The geometry of the flow considered in the linear stability analysis and the numerical simulations, including a description of the boundary conditions.
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In the text

$\begin{figure} \par\includegraphics[width=4.5cm,clip]{0349fi21.ps}\hspace*{4.5cm... ...s}\hspace*{9mm} \includegraphics[width=4.5cm,clip]{0349fi20.ps}\par\end{figure}$ Figure 2: Evolution of the relative amplitudes of perturbations. Dotted line: pressure perturbation ( $(p_{\max}-p_0)/p_0$ ). Dashed line: longitudinal velocity perturbation in the jet reference frame ( $0.5~(v'_{z,\max}-v'_{z,\min})$ ). Dash-dotted line: perpendicular velocity perturbation in the jet reference frame ( $0.5~(v'_{x,\max}-v'_{x,\min})$ ). The search for maximum $(p_{\max}$ , $v'_{x,\max}$ , $v'_{z,\max}$ ) and minimum ( $v'_{x,\min}$ , $v'_{z,\min}$ ) values have been restricted to those numerical zones with jet mass fraction larger than 0.5. Solid line: linear analysis prediction for the growth of perturbation. Note that abscissae in the last column plots extend up to $t= 1000~R_{\rm j}/c$ and that ordinate values adapt to fit the scale of each plot. Arrows in the plot of Model A05 point to specific stages of evolution used to define $t_{\rm lin}$ , $t_{\rm sat}$ and $t_{\rm peak}$ (see text).
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In the text

$\begin{figure} \par\includegraphics[width=6.1cm,clip]{0349fi31.ps}\hspace*{1.6cm} \includegraphics[width=6.2cm,clip]{0349fi32.ps}\end{figure}$ Figure 3: Pressure distribution at the end of linear phase for models B05 ( left panel) and D05 ( right panel). The continuous line corresponds to jet mass fraction equal to 0.5 and serves to distinguish jet and ambient media.
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In the text

$\begin{figure} \par\includegraphics[width=11.5cm,clip]{0349fi4.ps} \par\par\end{figure}$ Figure 4: Snapshot around saturation of logarithmic maps of pressure, rest-mass density and specific internal energy and non-logarithmic Lorentz factor for model A05.
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In the text

$\begin{figure} \par\includegraphics[width=9.8cm,clip]{0349fi51.ps}\vspace*{12mm}... ...}\vspace*{12mm} \par\includegraphics[width=10.1cm,clip]{0349fi53.ps}\end{figure}$ Figure 5: Same as Fig. 4 for models B05 ( upper), C05 ( middle) and D05 ( lower).
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In the text

$\begin{figure} \par\includegraphics[width=11.8cm,clip]{0349fi61.ps}\vspace*{12mm... ...} \par\hspace*{-4.8mm}\includegraphics[width=11cm,clip]{0349fi63.ps}\end{figure}$ Figure 6: Same as Fig. 4 for models B10 ( upper), C10 ( middle) and D10 ( lower).
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In the text

$\begin{figure} \par\includegraphics[width=12.6cm,clip]{0349fi71.ps}\vspace*{12mm... ...} \par\hspace*{-4.8mm}\includegraphics[width=12cm,clip]{0349fi73.ps}\end{figure}$ Figure 7: Same as Fig. 4 for models B20 ( upper), C20 ( middle) and D20 ( lower).
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In the text

$\begin{figure} \par\includegraphics[width=8cm,clip]{0349fiA1.ps}\end{figure}$ Figure A.1: Linear growth of the amplitude of the pressure perturbation (in logarithmic scale) versus time (in units of $R_{\rm j}/c$ ) for different resolutions. r_x stands for transversal resolution, r_z for longitudinal resolution, and m is the value which gives the shear layer steepness.

In the text

$\begin{figure} \par\includegraphics[angle=270,width=10.6cm,clip]{0349fi1.ps}\end{figure}$	Figure 1: The geometry of the flow considered in the linear stability analysis and the numerical simulations, including a description of the boundary conditions.
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$\begin{figure} \par\includegraphics[width=6.1cm,clip]{0349fi31.ps}\hspace*{1.6cm} \includegraphics[width=6.2cm,clip]{0349fi32.ps}\end{figure}$	Figure 3: Pressure distribution at the end of linear phase for models B05 ( left panel) and D05 ( right panel). The continuous line corresponds to jet mass fraction equal to 0.5 and serves to distinguish jet and ambient media.
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$\begin{figure} \par\includegraphics[width=11.5cm,clip]{0349fi4.ps} \par\par\end{figure}$	Figure 4: Snapshot around saturation of logarithmic maps of pressure, rest-mass density and specific internal energy and non-logarithmic Lorentz factor for model A05.
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$\begin{figure} \par\includegraphics[width=9.8cm,clip]{0349fi51.ps}\vspace{12mm}... ...}\vspace{12mm} \par\includegraphics[width=10.1cm,clip]{0349fi53.ps}\end{figure}$	Figure 5: Same as Fig. 4 for models B05 ( upper), C05 ( middle) and D05 ( lower).
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$\begin{figure} \par\includegraphics[width=11.8cm,clip]{0349fi61.ps}\vspace{12mm... ...} \par\hspace{-4.8mm}\includegraphics[width=11cm,clip]{0349fi63.ps}\end{figure}$	Figure 6: Same as Fig. 4 for models B10 ( upper), C10 ( middle) and D10 ( lower).
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$\begin{figure} \par\includegraphics[width=12.6cm,clip]{0349fi71.ps}\vspace{12mm... ...} \par\hspace{-4.8mm}\includegraphics[width=12cm,clip]{0349fi73.ps}\end{figure}$	Figure 7: Same as Fig. 4 for models B20 ( upper), C20 ( middle) and D20 ( lower).
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