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-rw-r--r--fg21sim/extragalactic/clusters/halo.py74
-rw-r--r--fg21sim/extragalactic/clusters/main.py1
2 files changed, 38 insertions, 37 deletions
diff --git a/fg21sim/extragalactic/clusters/halo.py b/fg21sim/extragalactic/clusters/halo.py
index f056735..b4a504d 100644
--- a/fg21sim/extragalactic/clusters/halo.py
+++ b/fg21sim/extragalactic/clusters/halo.py
@@ -206,6 +206,42 @@ class RadioHalo:
"""
return helper.magnetic_field(self.M_obs)
+ @property
+ def injection_rate(self):
+ """
+ The constant electron injection rate assumed.
+ Unit: [cm^-3 Gyr^-1]
+
+ The injection rate is parametrized by assuming that the total
+ energy injected in the relativistic electrons during the cluster
+ life (e.g., ``age_obs`` here) is a fraction (``self.eta_e``)
+ of the total thermal energy of the cluster.
+
+ Note that we assume that the relativistic electrons only permeate
+ the halo volume (i.e., of radius ``self.radius``) instead of the
+ whole cluster volume (of virial radius).
+
+ Qe(γ) = Ke * γ^(-s),
+ int[ Qe(γ) γ me c^2 ]dγ * t_cluster * V_halo =
+ eta_e * e_th * V_cluster
+ =>
+ Ke = [(s-2) * eta_e * e_th * γ_min^(s-2) * (R_vir/R_halo)^3 /
+ me / c^2 / t_cluster]
+
+ References
+ ----------
+ Ref.[cassano2005],Eqs.(31,32,33)
+ """
+ s = self.injection_index
+ R_halo = self.radius # [kpc]
+ R_vir = helper.radius_virial(self.M_obs, self.z_obs) # [kpc]
+ e_thermal = helper.density_energy_thermal(self.M_obs, self.z_obs)
+ term1 = (s-2) * self.eta_e * e_thermal # [erg cm^-3]
+ term2 = self.gamma_min**(s-2) * (R_vir/R_halo)**3
+ term3 = AU.mec2 * self.age_obs # [erg Gyr]
+ Ke = term1 * term2 / term3 # [cm^-3 Gyr^-1]
+ return Ke
+
def calc_electron_spectrum(self, zbegin=None, zend=None, n0_e=None):
"""
Calculate the relativistic electron spectrum by solving the
@@ -381,7 +417,7 @@ class RadioHalo:
----------
Ref.[cassano2005],Eqs.(31,32,33)
"""
- Ke = self._injection_rate
+ Ke = self.injection_rate # [cm^-3 Gyr^-1]
Qe = Ke * gamma**(-self.injection_index)
return Qe
@@ -498,42 +534,6 @@ class RadioHalo:
tau = tau_ref / self.beta_turb
return tau
- @property
- def _injection_rate(self):
- """
- The constant electron injection rate assumed.
- Unit: [cm^-3 Gyr^-1]
-
- The injection rate is parametrized by assuming that the total
- energy injected in the relativistic electrons during the cluster
- life (e.g., ``age_obs`` here) is a fraction (``self.eta_e``)
- of the total thermal energy of the cluster.
-
- Note that we assume that the relativistic electrons only permeate
- the halo volume (i.e., of radius ``self.radius``) instead of the
- whole cluster volume (of virial radius).
-
- Qe(γ) = Ke * γ^(-s),
- int[ Qe(γ) γ me c^2 ]dγ * t_cluster * V_halo =
- eta_e * e_th * V_cluster
- =>
- Ke = [(s-2) * eta_e * e_th * γ_min^(s-2) * (R_vir/R_halo)^3 /
- me / c^2 / t_cluster]
-
- References
- ----------
- Ref.[cassano2005],Eqs.(31,32,33)
- """
- s = self.injection_index
- R_halo = self.radius # [kpc]
- R_vir = helper.radius_virial(self.M_obs, self.z_obs) # [kpc]
- e_thermal = helper.density_energy_thermal(self.M_obs, self.z_obs)
- term1 = (s-2) * self.eta_e * e_thermal # [erg cm^-3]
- term2 = self.gamma_min**(s-2) * (R_vir/R_halo)**3
- term3 = AU.mec2 * self.age_obs # [erg Gyr]
- Ke = term1 * term2 / term3 # [cm^-3 Gyr^-1]
- return Ke
-
def _loss_ion(self, gamma, t):
"""
Energy loss through ionization and Coulomb collisions.
diff --git a/fg21sim/extragalactic/clusters/main.py b/fg21sim/extragalactic/clusters/main.py
index cb2d7b8..b515d59 100644
--- a/fg21sim/extragalactic/clusters/main.py
+++ b/fg21sim/extragalactic/clusters/main.py
@@ -270,6 +270,7 @@ class GalaxyClusters:
"angular_radius": halo.angular_radius, # [arcsec]
"volume": halo.volume, # [kpc^3]
"B": halo.magnetic_field, # [uG]
+ "Ke": halo.injection_rate, # [cm^-3 Gyr^-1]
"n_e": n_e, # [cm^-3]
"frequency": self.frequencies, # [MHz]
"emissivity": emissivity, # [erg/s/cm^3/Hz]