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Name

snapcomove - scale cosmological simulations to/from comoving coordinates

Synopsis

snapcomove in=in_fileout=in_file [parameter=value] ...

Description

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.

Parameters

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].

Bugs

The density parameter omega is not implemented yet. It’s value is always taken to be 1.

See Also

snapscale(1NEMO) , snapcopy(1NEMO)

Author

Peter Teuben

Files


~/src/pjt/nbody       snapcomove.c snapcomove.1

Update History


19-Sep-90    V1.0: created              PJT/George Rhee


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