def synth_halpha(atmos, dopplerLines=False):
atmos.convert_scales()
atmos.quadrature(5)
Hatom = H_6_doppler if dopplerLines else H_6_atom
aSet = lw.RadiativeSet([
Hatom(),
C_atom(),
O_atom(),
Si_atom(),
Al_atom(),
CaII_atom(),
Fe_atom(),
He_9_atom(),
MgII_atom(),
N_atom(),
Na_atom(),
S_atom()
])
aSet.set_active('H')
spect = aSet.compute_wavelength_grid()
eqPops = aSet.compute_eq_pops(atmos)
ctx = lw.Context(atmos, spect, eqPops, Nthreads=8)
iterate_ctx(ctx)
Iwave = ctx.compute_rays(wave, [1.0], stokes=False)
return ctx, Iwave
def synth_8542(atmos, backgroundProvider=None):
atmos.convert_scales()
atmos.quadrature(5)
aSet = lw.RadiativeSet([
H_6_atom(),
C_atom(),
O_atom(),
Si_atom(),
Al_atom(),
CaII_atom(),
Fe_atom(),
He_9_atom(),
MgII_atom(),
N_atom(),
Na_atom(),
S_atom()
])
aSet.set_active('Ca')
spect = aSet.compute_wavelength_grid()
eqPops = aSet.compute_eq_pops(atmos)
ctx = lw.Context(atmos,
spect,
eqPops,
Nthreads=8,
backgroundProvider=backgroundProvider)
iterate_ctx(ctx)
eqPops.update_lte_atoms_Hmin_pops(atmos)
Iwave = ctx.compute_rays(wave, [atmos.muz[-1]], stokes=False)
return ctx, Iwave
def make_fal_context(velShift=0.0):
atmos = Falc82()
atmos.vlos[:] = velShift
atmos.convert_scales()
atmos.quadrature(5)
aSet = lw.RadiativeSet([H_6_atom(), C_atom(), O_atom(), Si_atom(), Al_atom(), CaII_atom(), Fe_atom(), He_9_atom(), MgII_atom(), N_atom(), Na_atom(), S_atom()])
aSet.set_active('H', 'Ca')
spect = aSet.compute_wavelength_grid()
eqPops = aSet.compute_eq_pops(atmos)
ctx = lw.Context(atmos, spect, eqPops, ngOptions=NgOptions(0,0,0), Nthreads=1)
return ctx
def synth_line(atmos, conserve, useNe=True, prd=False):
atmos.convert_scales()
atmos.quadrature(5)
aSet = lw.RadiativeSet([
H_6_atom(),
C_atom(),
O_atom(),
Si_atom(),
Al_atom(),
CaII_atom(),
Fe_atom(),
He_9_atom(),
MgII_atom(),
N_atom(),
Na_atom(),
S_atom()
])
aSet.set_active('H', 'Ca', 'Mg')
spect = aSet.compute_wavelength_grid()
molPaths = [get_default_molecule_path() + m + '.molecule' for m in ['H2']]
mols = lw.MolecularTable(molPaths)
if useNe:
eqPops = aSet.compute_eq_pops(atmos, mols)
else:
eqPops = aSet.iterate_lte_ne_eq_pops(atmos, mols)
ctx = lw.Context(atmos,
spect,
eqPops,
ngOptions=NgOptions(0, 0, 0),
hprd=False,
conserveCharge=conserve,
Nthreads=8)
ctx.depthData.fill = True
start = time.time()
iterate_ctx(ctx, atmos, eqPops, prd=prd, updateLte=False)
end = time.time()
print('%.2f s' % (end - start))
eqPops.update_lte_atoms_Hmin_pops(atmos)
Iwave = ctx.compute_rays(wave, [atmos.muz[-1]], stokes=False)
return ctx, Iwave
def cmo_synth(atmosData, crsw=None, NmaxIter=1000):
with open(os.devnull, 'w') as f:
with redirect_stdout(f):
if crsw is not None:
crsw = crsw()
atmos = Atmosphere(ScaleType.Geometric,
depthScale=atmosData['height'],
temperature=atmosData['temp'],
vlos=atmosData['vlos'],
vturb=4000 * np.ones_like(atmosData['height']))
aSet = RadiativeSet([
H_6_atom(),
C_atom(),
O_atom(),
Si_atom(),
Al_atom(),
CaII_atom(),
Fe_atom(),
He_atom(),
MgII_atom(),
N_atom(),
Na_atom(),
S_atom()
])
aSet.set_active('H', 'Ca')
spect = aSet.compute_wavelength_grid()
atmos.convert_scales(Pgas=atmosData['pgas'])
atmos.quadrature(5)
eqPops = aSet.iterate_lte_ne_eq_pops(atmos)
ctx = lw.Context(atmos,
spect,
eqPops,
conserveCharge=False,
initSol=InitialSolution.Lte,
crswCallback=crsw)
converged = True
exploding = False
try:
nIter = iterate_ctx(ctx,
eqPops,
prd=False,
NmaxIter=NmaxIter,
nr=True)
except ConvergenceError:
converged = False
nIter = NmaxIter
except ExplodingMatrixError:
converged = False
exploding = True
nIter = NmaxIter
if converged:
eqPops.update_lte_atoms_Hmin_pops(atmos)
Iwave = ctx.compute_rays(wave, [1.0])
return {
'Iwave': Iwave,
'eqPops': eqPops,
'converged': converged,
'nIter': nIter,
'atmosData': atmosData,
'exploding': exploding
}
else:
return {
'converged': converged,
'nIter': nIter,
'atmosData': atmosData,
'exploding': exploding
}
MgII_atom(),
N_atom(),
Na_atom(),
S_atom()
])
aSet.set_active('Ca')
spect = aSet.compute_wavelength_grid()
coarseEqPops = aSet.compute_eq_pops(coarse)
fineEqPops = aSet.compute_eq_pops(fine)
trueEqPops = aSet.compute_eq_pops(fine)
coarseCtx = lw.Context(coarse,
spect,
coarseEqPops,
ngOptions=lw.NgOptions(0, 0, 0),
conserveCharge=False,
initSol=lw.InitialSolution.Lte,
Nthreads=8)
fineCtx = lw.Context(fine,
spect,
fineEqPops,
ngOptions=lw.NgOptions(0, 0, 0),
conserveCharge=False,
initSol=lw.InitialSolution.Lte,
Nthreads=8)
trueCtx = lw.Context(fine,
spect,
trueEqPops,
ngOptions=lw.NgOptions(0, 0, 0),
conserveCharge=False,
def synth_8542(atmos, conserve, useNe, wave):
'''
Synthesise a spectral line for given atmosphere with different
conditions.
Parameters
----------
atmos : lw.Atmosphere
The atmospheric model in which to synthesise the line.
conserve : bool
Whether to start from LTE electron density and conserve charge, or
simply use from the electron density present in the atomic model.
useNe : bool
Whether to use the electron density present in the model as the
starting solution, or compute the LTE electron density.
wave : np.ndarray
Array of wavelengths over which to resynthesise the final line
profile for muz=1.
Returns
-------
ctx : lw.Context
The Context object that was used to compute the equilibrium
populations.
Iwave : np.ndarray
The intensity at muz=1 for each wavelength in `wave`.
'''
# Configure the atmospheric angular quadrature
atmos.quadrature(5)
# Configure the set of atomic models to use.
aSet = lw.RadiativeSet([
H_6_atom(),
C_atom(),
O_atom(),
Si_atom(),
Al_atom(),
CaII_atom(),
Fe_atom(),
He_9_atom(),
MgII_atom(),
N_atom(),
Na_atom(),
S_atom()
])
# Set H and Ca to "active" i.e. NLTE, everything else participates as an
# LTE background.
aSet.set_active('H', 'Ca')
# Compute the necessary wavelength dependent information (SpectrumConfiguration).
spect = aSet.compute_wavelength_grid()
# Either compute the equilibrium populations at the fixed electron density
# provided in the model, or iterate an LTE electron density and compute the
# corresponding equilibrium populations (SpeciesStateTable).
if useNe:
eqPops = aSet.compute_eq_pops(atmos)
else:
eqPops = aSet.iterate_lte_ne_eq_pops(atmos)
# Configure the Context which holds the state of the simulation for the
# backend, and provides the python interface to the backend.
# Feel free to increase Nthreads to increase the number of threads the
# program will use.
ctx = lw.Context(atmos, spect, eqPops, conserveCharge=conserve, Nthreads=1)
start = time.time()
# Iterate the Context to convergence
iterate_ctx(ctx)
end = time.time()
print('%.2f s' % (end - start))
# Update the background populations based on the converged solution and
# compute the final intensity for mu=1 on the provided wavelength grid.
eqPops.update_lte_atoms_Hmin_pops(atmos)
Iwave = ctx.compute_rays(wave, [atmos.muz[-1]], stokes=False)
return ctx, Iwave
CaII_atom(),
Fe_atom(),
He_atom(),
Mg_atom(),
N_atom(),
Na_atom(),
S_atom()
])
aSet.set_active('Ca')
spect = aSet.compute_wavelength_grid()
# molPaths = [get_default_molecule_path() + m + '.molecule' for m in ['H2']]
# mols = lw.MolecularTable(molPaths)
baseEqPops = aSet.compute_eq_pops(baseAtmos)
baseCtx = lw.Context(baseAtmos, spect, baseEqPops, Nthreads=8)
eqPopses = [aSet.compute_eq_pops(a) for a in atmoses]
ctxs = [lw.Context(a, spect, e, Nthreads=8) for a, e in zip(atmoses, eqPopses)]
eta1 = 1e-1
eta2 = 5e-4
nu1 = 2
nu2 = 4
Rc = 1.0
count = 0
global nIter
nIter = [0 for f in ctxs]
start = time.time()
for i in range(nu2):
ctxs[-1].formal_sol_gamma_matrices()
He_9_atom(),
MgII_atom(),
N_atom(),
Na_atom(),
S_atom()
])
aSet.set_active(AtomName)
spect = aSet.compute_wavelength_grid()
eqPops = [aSet.compute_eq_pops(atmos) for atmos in falHeirarchy]
ctx = [
lw.Context(atmos,
spect,
pops,
ngOptions=lw.NgOptions(0, 0, 0),
conserveCharge=False,
initSol=lw.InitialSolution.Lte,
Nthreads=8) for atmos, pops in zip(falHeirarchy, eqPops)
]
Nested = False
mgStart = time.time()
global nIter
nIter = [0 for f in falHeirarchy]
if Nested:
# Full multigrid V-cycle
# NOTE(cmo): Initial guess on coarsest grid
for i in range(100):
dJ = ctx[0].formal_sol_gamma_matrices()
delta = stat_equil(ctx[0])