HTML automatically generated with rman
Table of Contents
mkommod - generate N-body system with anisotropic distribution function
mkommod in=in_file out=out_file [parameter=value] ...
mkommod
generates N-body realizations of a spherical system with a spheroidal anisotropic
distribution function a la Osipkov-Merritt, using tables of radius, mass,
potential, and distribution function.
The following parameters
are recognized.
- in=in_file
- Read input tables in binary from in_file, which
should contain an OsipkovMerrittModel data set. Default: required.
- out=out_file
- Write snapshot(s) to out_file in snapshot(5NEMO)
form. Default: required.
- nbody=num_bodies
- Number of particles to generate per model. Default: 512.
- seed=random_seed
- Seed used to initialize random number generator. Default:
123.
- ftrun=mass_frac
- To save time in the rejection phase, all particles
generated will lie within the radius containing a fraction mass_frac of
the total mass. Since the d.f. is not truncated in energy, this amounts to
a slight bias in the orbital phases of a few outlying particles. Default:
0.999.
- zerocm=zero_flag
- If true, zero center of mass of generated model(s).
Default: true.
- nmodel=num_models
- Number of models to generate, written one
after the other to out_file. Default: 1.
- headline=message
- Message prepended
to out_file.
- epsilon=epsilon
- Small number that controls potential roundoff
problems in f(E) [Default: 1.0e-10].
snapshot(5NEMO)
Binney & Tremaine (1987), pp.240
Osipkov, L.P. 1979, Soviet Astron Lett, 5, 42.
Merritt, D. 1985, AJ, 90, 1027.
LIMEPY: https://github.com/mgieles/limepy
$NEMODAT/k?isot.dat isotropic King models
$NEMODAT/k?an??.dat anisotropic King models
$NEMODAT/plum.dat isotropic Plummer model
Joshua E. Barnes
22-may-88 V1.x created/documented JEB
5-jul-97 V2.0 added epsilon, some code cleanup PJT
Table of Contents