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| author | Aaron LI <aly@aaronly.me> | 2017-10-20 10:22:24 +0800 |
|---|---|---|
| committer | Aaron LI <aly@aaronly.me> | 2017-10-20 10:22:24 +0800 |
| commit | fd20ab688759f3dfc3f7796ac0b1118e21ee5b22 (patch) | |
| tree | a75ffd2b7ae280afe65b71e998b0da22c7e7fde1 /fg21sim/configs/20-extragalactic.conf.spec | |
| parent | 283ca6c00e5ff6c74b529d0a460115516c16eec7 (diff) | |
| download | fg21sim-fd20ab688759f3dfc3f7796ac0b1118e21ee5b22.tar.bz2 | |
clusters/halo: Determine magnetic field by fraction of its energy density
* Rewrite "magnetic_field()" function to calculate the mean magnetic field
strength within ICM according its energy density fraction w.r.t. the ICM
thermal energy density.
* Remove config options "b_mean" and "b_index", which are replaced with the
option "eta_b", the assumed magnetic energy density fraction w.r.t. the
ICM thermal energy density.
Diffstat (limited to 'fg21sim/configs/20-extragalactic.conf.spec')
| -rw-r--r-- | fg21sim/configs/20-extragalactic.conf.spec | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/fg21sim/configs/20-extragalactic.conf.spec b/fg21sim/configs/20-extragalactic.conf.spec index 2c879ac..75ea0ec 100644 --- a/fg21sim/configs/20-extragalactic.conf.spec +++ b/fg21sim/configs/20-extragalactic.conf.spec @@ -119,14 +119,10 @@ # Unit: [Gyr] tau_merger = float(default=2.0, min=1.0, max=5.0) - # Magnetic field scaling relation for clusters - # Reference: Cassano et al. 2012, A&A, 548, A100, Eq.(1) - # - # The mean magnetic field assumed - # Unit: [uG] - b_mean = float(default=1.9, min=0.1, max=10) - # The index of the scaling relation - b_index = float(default=1.5, min=0.0, max=3.0) + # The fraction of the magnetic field energy density w.r.t. the ICM + # thermal energy density, which is used to determine the mean magnetic + # field strength within the ICM and is also assumed to be uniform. + eta_b = float(default=0.001, min=1e-5, max=0.1) # Filename prefix for this component prefix = string(default="cluster") |