Initial commit

polarisation/affichage_pola.py

@@ -0,0 +1,65 @@
+#!/usr/bin/python
+#-*- coding:utf-8 -*-
+
+import numpy as np
+import matplotlib.pyplot as plt
+
+def annotation_line(ax, xmin, xmax, y, text, ytext=0, linecolor='black', linewidth=1, fontsize=8):
+    ax.annotate('', xy=(xmin, y), xytext=(xmax, y), xycoords='data', textcoords='data',arrowprops={'arrowstyle': '|-|', 'color':linecolor, 'linewidth':linewidth})
+    #ax.annotate('', xy=(xmin, y), xytext=(xmax, y), xycoords='data', textcoords='data',arrowprops={'arrowstyle': '<->', 'color':linecolor, 'linewidth':linewidth})
+    xcenter = np.log10(xmin)+(np.log10(xmax)-np.log10(xmin))/2
+    if ytext==0:
+        ytext = y+(ax.get_ylim()[1]-ax.get_ylim()[0])/5
+    ax.annotate( text, xy=(pow(10,xcenter),ytext), ha='center', va='center', fontsize=fontsize )
+
+A = np.loadtxt('data_pola.res')
+
+gam = A[0,0]
+nu = A[1:,0]
+
+val_test = []
+
+para = []
+orth = []
+d = []
+
+for i in range(int(len(A[0,:])/3)):
+    val_test.append(A[0,1+3*i]*180./np.pi)
+    para.append(A[1:,1+3*i])
+    orth.append(A[1:,2+3*i])
+    d.append(A[1:,3+3*i])
+
+fig,ax = plt.subplots(3,1,sharex=True,gridspec_kw={'height_ratios': [3,1,0.25]},figsize=(18,9))
+plt.subplots_adjust(left=0.10,bottom=0.10,right=0.90,top=0.90,wspace=0.5,hspace=0)
+
+for i in range(len(val_test)):
+    ax[0].plot(nu,para[i],label=r"$I_{\parallel}$, $\phi=$"+"{:0.2f}deg".format(val_test[i]))
+    ax[0].plot(nu,orth[i],label=r"$I_{\perp}$, $\phi=$"+"{:0.2f}deg".format(val_test[i]))
+    ax[1].plot(nu,d[i]*100.,label=r"$\phi=$"+"{:0.2f}deg".format(val_test[i]))
+
+ax[0].set_xscale('log')
+ax[0].set_xlim(1e7,1e15)
+ax[0].set_ylabel(r"Intensity of polarisation components ($W \cdot Hz^{-1}$)")
+ax[0].legend()
+
+ax[1].set_xscale('log')
+ax[1].set_xlim(1e7,1e15)
+ax[1].set_ylim(0,100.)
+ax[1].set_ylabel('Polarisation power')
+ax[1].set_xlabel('Frequency (Hz)')
+ax[1].legend()
+
+ax[2].set_ylim(-1,2)
+ax[2].tick_params(labelleft=False,left=False)
+annotation_line(ax[2],1e7,3e8,0,"Radio Waves")
+annotation_line(ax[2],3e8,3e11,0,"Microwaves")
+annotation_line(ax[2],3e11,4e14,0,"IR")
+annotation_line(ax[2],4e14,7.5e14,0,"Visible")
+ax[2].set_xlabel('Frequency (Hz)')
+
+fig.suptitle(r"Synchrotron emission polarisation as a function of frequency for different values of observation angle $\phi$")
+plt.savefig("synchrotron_polarisation.png",bbox_inches='tight')
+
+#plt.show()
+
+