def particle_spectrum_start(tmin, tmax, p_spectrum, lt0, lt1, b0, b1, emax0,
emax1, r0, r1, v0, v1, dens, Tfir, Ufir, Tnir,
Unir):
"""
GAMERA computation of the particle spectrum (for the first two time bins)
http://libgamera.github.io/GAMERA/docs/time_dependent_modeling.html
Procedure to do at the first two time steps in the calculation
of the PWN Radius (seems that GAMERA needs at least three time steps to solve the advective equation)
Returns
-------
sed : array-like
Array with the evolved particle spectrum (erg/cm**2/s vs TeV) at the
last step
energy : float
Total particle energy content (in erg)
"""
t = np.linspace(tmin, tmax, 3)
b = np.linspace(b0, b1, 3)
lt = np.linspace(lt0, lt1, 3)
emax = np.linspace(emax0, emax1, 3)
r = np.linspace(r0, r1, 3)
v = np.linspace(v0, v1, 3)
fp = gp.Particles()
fp.SetCustomInjectionSpectrum(p_spectrum)
fp.SetLuminosity(list(zip(t, lt)))
fp.SetBField(list(zip(t, b)))
fp.SetEmax(list(zip(t, emax)))
fp.SetRadius(list(zip(t, r)))
fp.SetExpansionVelocity(list(zip(t, v)))
fp.SetAmbientDensity(dens)
fp.AddThermalTargetPhotons(2.7, 0.25 * gp.eV_to_erg) #CMB
fp.AddThermalTargetPhotons(Tfir, Ufir) #FIR photon field
fp.AddThermalTargetPhotons(Tnir, Unir) #NIR photon field
fp.SetTmin(tmin)
erad = np.logspace(
-21, 4., 250
) * gp.TeV_to_erg # energies(in ergs) where radiation will be calculated
fr = gp.Radiation()
fr.AddThermalTargetPhotons(2.7, 0.25 * gp.eV_to_erg) #CMB
fr.AddThermalTargetPhotons(Tfir, Ufir) #FIR photon field
fr.AddThermalTargetPhotons(Tnir, Unir) #NIR photon field
fr.SetAmbientDensity(dens)
fp.SetAge(tmax)
fp.ToggleQuietMode()
fp.CalculateElectronSpectrum()
sed = np.array(fp.GetParticleSED())
energy = fp.GetParticleEnergyContent() * gp.TeV_to_erg
return sed, energy
def particle_spectrum(tmin, tmax, tt, p_spectrum, lt, b, emax, r, v, dens,
Tfir, Ufir, Tnir, Unir, no_escape):
"""
GAMERA computation of the particle spectrum
http://libgamera.github.io/GAMERA/docs/time_dependent_modeling.html
Procedure to do at each time step in the calculation of the PWN Radius
Returns
-------
sed : array-like
Array with the evolved particle spectrum (erg/cm**2/s vs TeV) at the
last step
energy : float
Total particle energy content (in erg)
"""
fp = gp.Particles()
t = tt[tt <= tmax]
fp.SetCustomInjectionSpectrum(p_spectrum)
if no_escape == False:
e = np.logspace(np.log10(gp.m_e), np.log10(3 * np.max(emax)),
100) #particle escape
t_m, e_m = np.meshgrid(t, e) #particle escape
fp.SetTimeAndEnergyDependentEscapeTime(t, e,
t_esc(e_m, t_m, b,
r)) #particle escape
fp.SetLuminosity(list(zip(t, lt)))
fp.SetBField(list(zip(t, b)))
fp.SetEmax(list(zip(t, emax)))
fp.SetRadius(list(zip(t, r)))
fp.SetExpansionVelocity(list(zip(t, v)))
fp.SetAmbientDensity(dens)
fp.AddThermalTargetPhotons(2.7, 0.25 * gp.eV_to_erg) #CMB
fp.AddThermalTargetPhotons(Tfir, Ufir) #FIR photon field
fp.AddThermalTargetPhotons(Tnir, Unir) #NIR photon field
fp.SetTmin(tmin)
erad = np.logspace(
-21, 4., 250
) * gp.TeV_to_erg # energies(in ergs) where radiation will be calculated
fr = gp.Radiation()
fr.AddThermalTargetPhotons(2.7, 0.25 * gp.eV_to_erg) #CMB
fr.AddThermalTargetPhotons(Tfir, Ufir) #FIR photon field
fr.AddThermalTargetPhotons(Tnir, Unir) #NIR photon field
fr.SetAmbientDensity(dens)
fp.SetAge(tmax)
fp.ToggleQuietMode()
fp.CalculateElectronSpectrum()
sed = np.array(fp.GetParticleSED())
energy = fp.GetParticleEnergyContent() * gp.TeV_to_erg
return sed, energy
configParser.read(configFile)
lum = float(configParser.get('Parameters', 'Luminosity'))
age = float(configParser.get('Parameters', 'Age'))
dist = float(configParser.get('Parameters', 'Distance'))
dens = float(configParser.get('Parameters', 'AmbientDensity'))
bfield = float(configParser.get('Parameters', 'BField'))
t = float(configParser.get('Parameters', 'tRAD'))
e = gp.eV_to_erg * float(configParser.get('Parameters', 'edensRAD'))
ebins = float(configParser.get('Parameters', 'Ebins'))
emax = gp.TeV_to_erg * float(configParser.get('Parameters', 'Emax'))
emin = gp.TeV_to_erg * float(configParser.get('Parameters', 'Emin'))
spind = float(configParser.get('Parameters', 'SpectralIndex'))
outfile = configParser.get('Files', 'outfile')
fr = gp.Radiation()
fp = gp.Particles()
fu = gp.Utils()
fu.DrawGamera()
# set particle stuff
fp.SetLuminosity(lum)
fp.SetBField(bfield)
fp.SetEmax(emax)
fp.SetEmin(emin)
fp.SetSpectralIndex(spind)
fp.SetEnergyBins(ebins)
fp.SetAmbientDensity(dens)
fp.SetAge(age)
# set radiation stuff
fr.SetDistance(dist)
fr.SetAmbientDensity(fp.GetAmbientDensity())
def final_spectrum(t, age, LT, B, EMAX, R, V, dens, dist, Tfir, Ufir, Tnir, Unir, binss, tmin, ebreak, alpha1, alpha2, no_escape):
"""
GAMERA computation of the particle spectrum (for the extraction of the
photon sed at the end of the evolution of the PWN)
http://libgamera.github.io/GAMERA/docs/time_dependent_modeling.html
Returns
-------
sed : array-like
Array with the evolved particle spectrum (erg/cm**2/s vs TeV) at the
last step
tot : array-like
Array with the total photon spectrum (erg/cm**2/s vs TeV)
ic : array-like
Array with the inverse compton photon spectrum (erg/cm**2/s vs TeV)
ic : array-like
Array with the inverse compton contribution to the total
photon spectrum (erg/cm**2/s vs TeV)
ic_cmb : array-like
Array with the cmb inverse compton contribution to the total
photon spectrum (erg/cm**2/s vs TeV)
ic_fir : array-like
Array with the fir inverse compton contribution to the total
photon spectrum (erg/cm**2/s vs TeV)
ic_nir : array-like
Array with the nir inverse compton contribution to the total
photon spectrum (erg/cm**2/s vs TeV)
ic_ssc : array-like
Array with the self-synchrotron compton contribution to the total
photon spectrum (erg/cm**2/s vs TeV)
ic_synch : array-like
Array with the synchrotron contribution to the total
photon spectrum (erg/cm**2/s vs TeV)
"""
fp = gp.Particles()
p_spectrum = broken_powerlaw(ebreak,alpha1,alpha2,EMAX, 500)
if no_escape == False:
e = np.logspace(np.log10(gp.m_e),np.log10(3*np.max(EMAX)),100) #particle escape
t_m, e_m = np.meshgrid(t, e) #particle escape
fp.SetTimeAndEnergyDependentEscapeTime(t, e, t_esc(e_m, t_m, B, R)) #particle escape
fp.SetCustomInjectionSpectrum(p_spectrum)
fp.SetLuminosity(list(zip(t,LT)))
fp.SetBField(list(zip(t,B)))
fp.SetEmax(list(zip(t,EMAX)))
fp.SetRadius(list(zip(t,R)))
fp.SetExpansionVelocity(list(zip(t,V)))
fp.SetAmbientDensity(dens)
fp.AddThermalTargetPhotons(2.7,0.25*gp.eV_to_erg)
fp.AddThermalTargetPhotons(Tfir, Ufir)
fp.AddThermalTargetPhotons(Tnir, Unir)
fp.SetTmin(tmin)
erad = np.logspace(-2,4.,binss) * gp.TeV_to_erg # energies(in ergs) where radiation will be calculated
fr = gp.Radiation()
fr.SetDistance(dist)
fr.AddThermalTargetPhotons(2.7,0.25*gp.eV_to_erg)
fr.AddThermalTargetPhotons(Tfir, Ufir)
fr.AddThermalTargetPhotons(Tnir, Unir)
fr.SetAmbientDensity(dens)
fp.SetAge(age)
fp.ToggleQuietMode()
fp.CalculateElectronSpectrum(binss)
sed = np.array(fp.GetParticleSED())
sp = np.array(fp.GetParticleSpectrum())
fr.SetElectrons(sp[:])
fr.SetBField(fp.GetBField())
fr.AddSSCTargetPhotons(fp.GetRadius())
fr.ToggleQuietMode()
fr.CalculateDifferentialPhotonSpectrum(erad)
tot = np.array(fr.GetTotalSED())
return sed, tot
