From 46c36b299dbe29d2872ae1ae6d98f1bde320bad0 Mon Sep 17 00:00:00 2001 From: Aaron LI Date: Sun, 31 Dec 2017 16:34:55 +0800 Subject: clusters/halo: calc turbulence velocity dispersion based on merger Also update the description of option "extragalactic/halos/eta_turb" and change its default value to 0.1 --- fg21sim/configs/20-extragalactic.conf.spec | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-) (limited to 'fg21sim/configs/20-extragalactic.conf.spec') diff --git a/fg21sim/configs/20-extragalactic.conf.spec b/fg21sim/configs/20-extragalactic.conf.spec index 44fb1ca..52f66da 100644 --- a/fg21sim/configs/20-extragalactic.conf.spec +++ b/fg21sim/configs/20-extragalactic.conf.spec @@ -167,17 +167,11 @@ # used to determine the radio halo size. f_lturb = float(default=0.33, min=0.1, max=1.0) - # The fraction of cluster thermal energy originating from turbulent - # dissipation, which describes the turbulence intensity in the ICM, - # and determines its Mach number. - # NOTE: Currently, this parameter only determines the turbulence Mach - # number, which affects only the turbulent acceleration efficiency, - # which is also controlled by the above ``f_acc`` parameter. - # So we can just *fix* this parameter to its default value. - eta_turb = float(default=0.2, min=0.1, max=1.0) - # Ratio of the total energy injected into cosmic-ray electrons during # the cluster life to its total thermal energy. + # The fraction of merger energy transferred into the turbulence. + eta_turb = float(default=0.1, min=0.1, max=0.5) + eta_e = float(default=0.001, min=0.001, max=0.1) # Electron injection, which is assumed to have a constant injection -- cgit v1.2.2