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snapcomove - scale cosmological simulations to/from comoving coordinates
snapcomove in=in_fileout=in_file [parameter=value] ...
snapcomove
scale the coordinates and velocities to comoving coordinates. In a future
version one should also be able to scale back to real-world coordinates.
Input parameters are (t0), the reference time (or alternatively H0, the
Hubble constant at the reference time) and omega, the density parameter
of the universe. Scaling at the reference time is 1 by convention. The velocities
are scaled in the same means, after subtraction of the local Hubble flow.
The following parameters are recognized:
- in=in_file
- input file,
in snapshot(5NEMO)
format. Default: none.
- out=out_file
- output file, in snapshot(5NEMO)
format. Default: none.
- t0=ref_time
- Reference time, usually taken to be the
first snapshot though. [default: first].
- omega=omega
- Density parameter of
the cosmology. [default: 1].
The density parameter omega is not implemented
yet. It’s value is always taken to be 1.
snapscale(1NEMO)
, snapcopy(1NEMO)
Peter Teuben
~/src/pjt/nbody snapcomove.c snapcomove.1
19-Sep-90 V1.0: created PJT/George Rhee
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