diff options
Diffstat (limited to 'fg21sim/extragalactic/clusters/halo.py')
| -rw-r--r-- | fg21sim/extragalactic/clusters/halo.py | 40 |
1 files changed, 37 insertions, 3 deletions
diff --git a/fg21sim/extragalactic/clusters/halo.py b/fg21sim/extragalactic/clusters/halo.py index 6f544d2..a6d5a20 100644 --- a/fg21sim/extragalactic/clusters/halo.py +++ b/fg21sim/extragalactic/clusters/halo.py @@ -100,15 +100,43 @@ class HaloSingle: """ Simulate the merging history of the cluster using the extended Press-Schechter formalism. + + Attributes + ---------- + mtree : `~MergerTree` + Generated merger tree of this cluster. + + Returns + ------- + mtree : `~MergerTree` + Generated merger tree of this cluster. """ self.formation = ClusterFormation(self.M0, self.configs) self.mtree = self.formation.simulate_mergertree() return self.mtree - def calc_electron_spectrum(self): + def calc_electron_spectrum(self, zbegin=None, zend=None): """ Calculate the relativistic electron spectrum by solving the Fokker-Planck equation. + + Parameters + ---------- + zbegin : float, optional + The redshift from where to solve the Fokker-Planck equation. + Default: ``self.zmax``. + zend : float, optional + The redshift where to stop solving the Fokker-Planck equation. + Default: 0 (i.e., present) + + Returns + ------- + p : `~numpy.ndarray` + The momentum grid adopted for solving the equation. + Unit: [mec] + n_e : `~numpy.ndarray` + The solved electron spectrum at ``zend``. + Unit: [cm^-3 mec^-1] """ fpsolver = FokkerPlanckSolver( xmin=self.pmin, xmax=self.pmax, @@ -122,8 +150,14 @@ class HaloSingle: p = fpsolver.x # Assume NO initial electron distribution n0_e = np.zeros(p.shape) - tstart = self.cosmo.age(self.zmax) - tstop = self.cosmo.age0 + if zbegin is None: + tstart = self.cosmo.age(self.zmax) + else: + tstart = self.cosmo.age(zbegin) + if zend is None: + tstop = self.cosmo.age0 + else: + tstop = self.cosmo.age(zend) n_e = fpsolver.solve(u0=n0_e, tstart=tstart, tstop=tstop) return (p, n_e) |