diff options
Diffstat (limited to 'fg21sim')
| -rw-r--r-- | fg21sim/extragalactic/clusters/emission.py | 7 | ||||
| -rw-r--r-- | fg21sim/extragalactic/clusters/formation.py | 19 | ||||
| -rw-r--r-- | fg21sim/extragalactic/clusters/halo.py | 46 | ||||
| -rw-r--r-- | fg21sim/extragalactic/clusters/main.py | 15 |
4 files changed, 34 insertions, 53 deletions
diff --git a/fg21sim/extragalactic/clusters/emission.py b/fg21sim/extragalactic/clusters/emission.py index 93e04ff..4366025 100644 --- a/fg21sim/extragalactic/clusters/emission.py +++ b/fg21sim/extragalactic/clusters/emission.py @@ -18,11 +18,11 @@ import numpy as np import scipy.integrate import scipy.special +from ...utils import cosmo from ...utils.units import (Units as AU, UnitConversions as AUC, Constants as AC) from ...utils.convert import Fnu_to_Tb_fast -from ...utils.cosmology import Cosmology logger = logging.getLogger(__name__) @@ -57,7 +57,6 @@ class SynchrotronEmission: self.n_e = n_e self.z = z self.radius = radius # [kpc] - self.cosmo = Cosmology() @property def frequency_larmor(self): @@ -165,7 +164,7 @@ class SynchrotronEmission: Synchrotron flux at frequency ``nu``. Unit: [Jy] = 1e-23 [erg/s/cm^2/Hz] """ - DL = self.cosmo.DL(self.z) * AUC.Mpc2cm # [cm] + DL = cosmo.DL(self.z) * AUC.Mpc2cm # [cm] P_nu = self.power(nu) F_nu = 1e23 * P_nu / (4*np.pi * DL*DL) # [Jy] return F_nu @@ -192,7 +191,7 @@ class SynchrotronEmission: Synchrotron surface brightness at frequency ``nu``. Unit: [K] <-> [Jy/pixel] """ - DA = self.cosmo.DL(self.z) * AUC.Mpc2cm # [cm] + DA = cosmo.DL(self.z) * AUC.Mpc2cm # [cm] radius = self.radius * AUC.kpc2cm # [cm] omega = (np.pi * radius**2 / DA**2) * AUC.rad2deg**2 # [deg^2] pixelarea = (pixelsize * AUC.arcsec2deg) ** 2 # [deg^2] diff --git a/fg21sim/extragalactic/clusters/formation.py b/fg21sim/extragalactic/clusters/formation.py index 827c089..3bb44a9 100644 --- a/fg21sim/extragalactic/clusters/formation.py +++ b/fg21sim/extragalactic/clusters/formation.py @@ -21,7 +21,7 @@ import scipy.special import scipy.optimize from .mergertree import MergerTree -from ...utils.cosmology import Cosmology +from ...utils import cosmo logger = logging.getLogger(__name__) @@ -54,8 +54,6 @@ class ClusterFormation: the merger is a major event or a minor one. If ``M_main/M_sub < ratio_major``, then it is a major merger event. Default: 3.0 - cosmo : `~Cosmology`, optional - Adopted cosmological model with custom utility functions. merger_mass_min : float, optional Minimum mass change to be regarded as a merger event instead of accretion. @@ -70,12 +68,11 @@ class ClusterFormation: major merger event, or None if not found. """ def __init__(self, M0, z0, zmax=3.0, ratio_major=3.0, - cosmo=Cosmology(), merger_mass_min=1e12): + merger_mass_min=1e12): self.M0 = M0 # [Msun] self.z0 = z0 self.zmax = zmax self.ratio_major = ratio_major - self.cosmo = cosmo self.merger_mass_min = merger_mass_min @property @@ -101,7 +98,7 @@ class ClusterFormation: References: Ref.[1],Eq.(2) """ alpha = self.sigma_index - sigma = self.cosmo.sigma8 * (mass / self.cosmo.M8) ** (-alpha) + sigma = cosmo.sigma8 * (mass / cosmo.M8) ** (-alpha) return sigma def f_delta_c(self, z): @@ -113,7 +110,7 @@ class ClusterFormation: References: Ref.[1],App.A,Eq.(A1) """ - return self.cosmo.overdensity_crit(z) + return cosmo.overdensity_crit(z) def f_dw_max(self, mass): """ @@ -148,7 +145,7 @@ class ClusterFormation: References: Ref.[1],Sec.(3) """ alpha = self.sigma_index - mass = self.cosmo.M8 * (S / self.cosmo.sigma8**2)**(-1/(2*alpha)) + mass = cosmo.M8 * (S / cosmo.sigma8**2)**(-1/(2*alpha)) return mass @staticmethod @@ -254,7 +251,7 @@ class ClusterFormation: Mc = self.M0 mtree_root = MergerTree(data={"mass": Mc, "z": zc, - "age": self.cosmo.age(zc)}) + "age": cosmo.age(zc)}) logger.debug("[main] z=%.4f : mass=%g [Msun]" % (zc, Mc)) mtree = mtree_root @@ -275,7 +272,7 @@ class ClusterFormation: dS = self.gen_dS(dw) # Progenitor properties z1 = self.calc_z(w2 + dw) - age1 = self.cosmo.age(z1) + age1 = cosmo.age(z1) S1 = S2 + dS M1 = self.calc_mass(S1) dM = Mc - M1 @@ -313,7 +310,7 @@ class ClusterFormation: merger tree. """ z = 0.0 if _z is None else _z - node_data = {"mass": M, "z": z, "age": self.cosmo.age(z)} + node_data = {"mass": M, "z": z, "age": cosmo.age(z)} # Whether to stop the trace if self.zmax is not None and z > self.zmax: diff --git a/fg21sim/extragalactic/clusters/halo.py b/fg21sim/extragalactic/clusters/halo.py index d7f351f..c78c2c3 100644 --- a/fg21sim/extragalactic/clusters/halo.py +++ b/fg21sim/extragalactic/clusters/halo.py @@ -26,7 +26,7 @@ import scipy.optimize from .formation import ClusterFormation from .solver import FokkerPlanckSolver -from ...utils.cosmology import Cosmology +from ...utils import cosmo from ...utils.units import (Units as AU, UnitConversions as AUC, Constants as AC) @@ -35,7 +35,7 @@ from ...utils.units import (Units as AU, logger = logging.getLogger(__name__) -class HaloSingle: +class RadioHalo: """ Simulate a single (giant) radio halos following the "statistical magneto-turbulent model" proposed by Cassano & Brunetti (2005). @@ -63,8 +63,6 @@ class HaloSingle: mec : float Unit for electron momentum (p): mec = m_e * c, p = gamma * mec, therefore value of p is the Lorentz factor. - cosmo : `~Cosmology` - Adopted cosmological model with custom utility functions. mtree : `~MergerTree` Merging history of this cluster. """ @@ -99,10 +97,6 @@ class HaloSingle: self.buffer_np = self.configs.getn(comp+"/buffer_np") self.time_step = self.configs.getn(comp+"/time_step") self.injection_index = self.configs.getn(comp+"/injection_index") - # Cosmology model - self.H0 = self.configs.getn("cosmology/H0") - self.OmegaM0 = self.configs.getn("cosmology/OmegaM0") - self.cosmo = Cosmology(H0=self.H0, Om0=self.OmegaM0) logger.info("Loaded and set up configurations") @property @@ -185,13 +179,13 @@ class HaloSingle: Unit: [cm^-3 mec^-1] """ if zbegin is None: - tstart = self.cosmo.age(self.zmax) + tstart = cosmo.age(self.zmax) else: - tstart = self.cosmo.age(zbegin) + tstart = cosmo.age(zbegin) if zend is None: - tstop = self.cosmo.age(self.z0) + tstop = cosmo.age(self.z0) else: - tstop = self.cosmo.age(zend) + tstop = cosmo.age(zend) fpsolver = FokkerPlanckSolver( xmin=self.pmin, xmax=self.pmax, @@ -252,8 +246,8 @@ class HaloSingle: Rvir : float Virial radius (unit: kpc) of the cluster at given redshift """ - Dc = self.cosmo.overdensity_virial(z) - rho = self.cosmo.rho_crit(z) # [g/cm^3] + Dc = cosmo.overdensity_virial(z) + rho = cosmo.rho_crit(z) # [g/cm^3] R_vir = (3*mass*AUC.Msun2g / (4*np.pi * Dc * rho))**(1/3) # [cm] R_vir *= AUC.cm2kpc # [kpc] return R_vir @@ -316,7 +310,7 @@ class HaloSingle: http://adsabs.harvard.edu/abs/2005MNRAS.357.1313C Eq.(12) """ - f_baryon = self.cosmo.Ob0 / self.cosmo.Om0 + f_baryon = cosmo.Ob0 / cosmo.Om0 Rv = self._radius_virial(mass, z) * AUC.kpc2cm # [cm] V = (4*np.pi / 3) * Rv**3 # [cm^3] rho = f_baryon * mass*AUC.Msun2g / V # [g/cm^3] @@ -346,7 +340,7 @@ class HaloSingle: http://adsabs.harvard.edu/abs/2005MNRAS.357.1313C Eq.(13) """ - f_baryon = self.cosmo.Ob0 / self.cosmo.Om0 + f_baryon = cosmo.Ob0 / cosmo.Om0 M_ICM = mass * f_baryon * AUC.Msun2g # [g] r *= AUC.kpc2cm # [cm] Rv = self._radius_virial(mass, z) * AUC.kpc2cm # [cm] @@ -477,12 +471,12 @@ class HaloSingle: time : float Elapsing time (unit: Gyr) """ - t_begin = self.cosmo.age(z_begin) # [Gyr] + t_begin = cosmo.age(z_begin) # [Gyr] t_end = t_begin + time - if t_end >= self.cosmo.age(0): + if t_end >= cosmo.age(0): z_end = 0.0 else: - z_end = self.cosmo.redshift(t_end) + z_end = cosmo.redshift(t_end) return z_end @property @@ -542,7 +536,7 @@ class HaloSingle: """ zgrid, chigrid = self._chi_data # XXX: force a minimal value instead of zero or too small - chi_min = 1 / (10 * self.cosmo.age0) + chi_min = 1 / (10 * cosmo.age0) try: zi = np.where(z < zgrid)[0][0] @@ -677,7 +671,7 @@ class HaloSingle: """ if not hasattr(self, "_electron_injection_rate"): e_th = self.e_thermal # [erg/cm^3] - age = self.cosmo.age(self.z0) + age = cosmo.age(self.z0) term1 = (self.injection_index-2) * self.eta_e term2 = e_th / (self.pmin * self.mec * AC.c) # [cm^-3] term3 = 1.0 / (age * self.pmin) # [Gyr^-1 mec^-1] @@ -714,7 +708,7 @@ class HaloSingle: http://adsabs.harvard.edu/abs/2013AN....334..515D Eq.(15) """ - z = self.cosmo.redshift(t) + z = cosmo.redshift(t) chi = self._coef_acceleration(z) # [Gyr^-1] # NOTE: Cassano & Brunetti's formula misses a factor of 2. Dpp = chi * p**2 / 4 # [mec^2/Gyr] @@ -760,7 +754,7 @@ class HaloSingle: http://adsabs.harvard.edu/abs/2005MNRAS.357.1313C Eq.(38) """ - z = self.cosmo.redshift(t) + z = cosmo.redshift(t) n_th = self._n_thermal(self.M0, z) coef = -3.3e-29 * AUC.Gyr2s / self.mec # [mec/Gyr] dpdt = coef * n_th * (1 + np.log(p/n_th) / 75) @@ -776,7 +770,7 @@ class HaloSingle: http://adsabs.harvard.edu/abs/2005MNRAS.357.1313C Eq.(39) """ - z = self.cosmo.redshift(t) + z = cosmo.redshift(t) coef = -4.8e-4 * AUC.Gyr2s / self.mec # [mec/Gyr] dpdt = (coef * (p*self.mec)**2 * ((self.magnetic_field/3.2)**2 + (1+z)**4)) @@ -793,7 +787,7 @@ class HaloSingle: Energy density of the ICM (unit: erg/cm^3) """ mass = self.M0 - f_baryon = self.cosmo.Ob0 / self.cosmo.Om0 + f_baryon = cosmo.Ob0 / cosmo.Om0 kT = self.kT_mass(mass) # [keV] N = mass * AUC.Msun2g * f_baryon / (AC.mu * AC.u) E_th = kT*AUC.keV2erg * N # [erg] @@ -820,7 +814,7 @@ class HaloSingle: Number density of the ICM Unit: [cm^-3] """ - f_baryon = self.cosmo.Ob0 / self.cosmo.Om0 + f_baryon = cosmo.Ob0 / cosmo.Om0 N = mass * AUC.Msun2g * f_baryon / (AC.mu * AC.u) Rv = self._radius_virial(mass, z) * AUC.kpc2cm # [cm] V = (4*np.pi / 3) * Rv**3 # [cm^3] diff --git a/fg21sim/extragalactic/clusters/main.py b/fg21sim/extragalactic/clusters/main.py index 438b860..b7c2d03 100644 --- a/fg21sim/extragalactic/clusters/main.py +++ b/fg21sim/extragalactic/clusters/main.py @@ -19,7 +19,7 @@ import pandas as pd from .formation import ClusterFormation from .halo import RadioHalo from ...sky import get_sky -from ...utils.cosmology import Cosmology +from ...utils import cosmo from ...utils.io import dataframe_to_csv @@ -63,14 +63,6 @@ class GalaxyClusters: self.checksum = self.configs.getn("output/checksum") self.clobber = self.configs.getn("output/clobber") - # Cosmology model - self.H0 = self.configs.getn("cosmology/H0") - self.OmegaM0 = self.configs.getn("cosmology/OmegaM0") - self.Omegab0 = self.configs.getn("cosmology/Omegab0") - self.sigma8 = self.configs.getn("cosmology/sigma8") - self.cosmo = Cosmology(H0=self.H0, Om0=self.OmegaM0, - Ob0=self.Omegab0, sigma8=self.sigma8) - # Sky and resolution if self.sky.type_ == "patch": self.resolution = self.sky.pixelsize # [arcsec] @@ -184,11 +176,10 @@ class GalaxyClusters: if ii % 50 == 0: logger.info("[%d/%d] %.1f%% ..." % (ii, num, 100*ii/num)) z0, M0 = row.z, row.mass - age0 = self.cosmo.age(z0) - zmax = self.cosmo.redshift(age0 - self.tau_merger) + age0 = cosmo.age(z0) + zmax = cosmo.redshift(age0 - self.tau_merger) clform = ClusterFormation(M0=M0, z0=z0, zmax=zmax, ratio_major=self.ratio_major, - cosmo=self.cosmo, merger_mass_min=self.merger_mass_min) clform.simulate_mergertree(main_only=True) mmev = clform.last_major_merger |