relaxation_time¶
- clustertools.analysis.functions.relaxation_time(cluster, rad=None, coulomb=0.4, projected=False, method='spitzer')[source]¶
Calculate the relaxation time (Spitzer & Hart 1971) within a given radius of the cluster
Spitzer, L. Jr, Hart, M.H. 1971, ApJ, 164, 399 (Equation 5)
Need to adjust amplitude for different input units
Parameters¶
- clusterclass
StarCluster
- radfloat
radius within which to calculate the relaxation time (defult: cluster.rm)
- coulombfloat
Coulomb parameter (default: 0.4)
- projectedbool
use projected values (default: False)
- methodstr
choose between Spitzer & Hart 1971 and other methods (in development)
- Returns:
- trelaxfloat
relaxation time within radius rad