Fast Methods for Cosmological Simulations
FastSim serves as a tool for quick N-body simulations in modified gravity.
Functions | Variables
distances_hiz_bm Namespace Reference

Functions

def do_all (z_arr, cpar, prefix)
 

Variables

float TCMB = 2.725
 
int PLOT_STUFF = 0
 
int WRITE_STUFF = 0
 
int FS = 16
 

Function Documentation

def distances_hiz_bm.do_all (   z_arr,
  cpar,
  prefix 
)

Definition at line 10 of file distances_hiz_bm.py.

10 def do_all(z_arr,cpar,prefix) :
11  pcs=csm.PcsPar()
12  pcs.background_set(cpar['om'],cpar['ol'],cpar['ob'],cpar['w0'],cpar['wa'],cpar['hh'],TCMB)
13 
14  a_arr=1./(z_arr+1)
15  chi_arr=np.array([pcs.radial_comoving_distance(a) for a in a_arr])
16 
17  if PLOT_STUFF==1 :
18  plt.plot(z_arr,chi_arr); plt.xlabel('$z$',fontsize=FS); plt.ylabel('$\\chi(z)\\,[{\\rm Mpc}\\,h^{-1}]$',fontsize=FS); plt.show()
19 
20  if WRITE_STUFF==1 :
21  np.savetxt(prefix+"_chi.txt",np.transpose([z_arr,chi_arr]),header="[1] z, [2] chi(z) (Mpc/h)")
22 
23 z_arr=np.array([10.,20.,50.,100.,200.,500.,1000.])
24 
25 cpar_model1= {'om': 0.3,'ol': 0.7,'ob':0.05,'hh': 0.7,'s8': 0.8,'ns': 0.96,'w0': -1.0, 'wa': 0.0}
26 cpar_model2={'om': 0.3,'ol': 0.7,'ob':0.05,'hh': 0.7,'s8': 0.8,'ns': 0.96,'w0': -0.9, 'wa': 0.0}
27 cpar_model3={'om': 0.3,'ol': 0.7,'ob':0.05,'hh': 0.7,'s8': 0.8,'ns': 0.96,'w0': -0.9, 'wa': 0.1}
28 
29 do_all(z_arr,cpar_model1,"model1_hiz")
30 do_all(z_arr,cpar_model2,"model2_hiz")
31 do_all(z_arr,cpar_model3,"model3_hiz")
32 
distances_hiz_bm.do_all
def do_all(z_arr, cpar, prefix)
Definition: distances_hiz_bm.py:10

Variable Documentation

int distances_hiz_bm.FS = 16

Definition at line 8 of file distances_hiz_bm.py.

int distances_hiz_bm.PLOT_STUFF = 0

Definition at line 6 of file distances_hiz_bm.py.

float distances_hiz_bm.TCMB = 2.725

Definition at line 5 of file distances_hiz_bm.py.

int distances_hiz_bm.WRITE_STUFF = 0

Definition at line 7 of file distances_hiz_bm.py.