diff options
Diffstat (limited to 'fg21sim/extragalactic/clusters/halo.py')
| -rw-r--r-- | fg21sim/extragalactic/clusters/halo.py | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/fg21sim/extragalactic/clusters/halo.py b/fg21sim/extragalactic/clusters/halo.py index 273a611..2b2b719 100644 --- a/fg21sim/extragalactic/clusters/halo.py +++ b/fg21sim/extragalactic/clusters/halo.py @@ -197,9 +197,11 @@ class RadioHalo: def time_turbulence(self, t=None): """ - The duration that the merger-induced turbulence persists, which - is used to approximate the lasting time of the effective turbulence - acceleration. + The duration that the compressive turbulence persists, which is + estimated as: + τ_turb ≅ L / v_impact = 2*R_turb / v_impact. + During this period, the merger-induced turbulence is regarded + to accelerate the relativistic electrons effectively. Unit: [Gyr] """ @@ -207,8 +209,11 @@ class RadioHalo: mass_main = self.mass_main(t=t_merger) mass_sub = self.mass_sub(t=t_merger) z_merger = COSMO.redshift(t_merger) - return helper.time_turbulence(mass_main, mass_sub, z=z_merger, - configs=self.configs) + vi = helper.velocity_impact(mass_main, mass_sub, z_merger) # [km/s] + distance = 2 * self.injection_radius + uconv = AUC.kpc2km * AUC.s2Gyr # [s kpc/km] => [Gyr] + time = uconv * distance / vi # [Gyr] + return time def mach_turbulence(self, t=None): """ |