NAME
CosmicCalculator - estimate cosmological values
SYNOPSIS
astcosmiccal [OPTION...]
DESCRIPTION
CosmicCalculator is part of GNU Astronomy Utilities 0.23. CosmicCalculator will do cosmological calculations. If no redshfit is specified, it will only print the main input parameters. If only a redshift is given, it will print a table of all calculations. If any of the single row calculations are requested, only their values will be printed with a single space between each.
For more information, please run any of the following commands. In particular the second contains a very comprehensive explanation of CosmicCalculator's invocation: expected input(s), output(s), and a full description of all the options.
- All options and their values:
-
$ astcosmiccal -P
- Inputs/Outputs and options:
-
$ info astcosmiccal
- Full section in manual/book:
-
$ info CosmicCalculator
- Full Gnuastro manual/book:
-
$ info gnuastro
If you couldn't find your answer in the manual, you can get direct help from experienced Gnuastro users and developers. For more information, please run:
-
$ info help-gnuastro
CosmicCalculator options:
-
Input:
- -H, --H0=FLT
-
Current expansion rate (Hubble constant).
- -l, --olambda=FLT
-
Current cosmological cst. dens. per crit. dens.
- -m, --omatter=FLT
-
Current matter density per critical density.
- -O, --obsline=STR,FLT
-
Redshift from line and observed wavelength.
- -r, --oradiation=FLT
-
Current radiation density per critical density.
- -y, --velocity=FLT
-
Velocity of interest in km/s.
- -z, --redshift=FLT
-
Redshift of interest.
-
Basic cosmology calculations
- -a, --absmagconv
-
Conversion to absolute magnitude (no unit).
- -A, --angulardiamdist
-
Angular diameter distance (Mpc).
- -b, --lookbacktime
-
Look back time to z (Ga: Giga Annum).
- -c, --criticaldensity
-
Critical density at z (g/cm^3).
- -C, --criticaldensitynow
-
Critical density now (g/cm^3).
- -d, --properdistance
-
Proper distance to z (Mpc).
- -e, --usedredshift
-
Used redshift in this run.
- -g, --age
-
Age of universe at z (Ga: Giga Annum).
- -G, --agenow
-
Age of universe now (Ga: Giga Annum).
- -L, --luminositydist
-
Luminosity distance to z (Mpc).
- -s, --arcsectandist
-
Tangential dist. for 1arcsec at z (physical kpc).
- -u, --distancemodulus
-
Distance modulus at z (no units).
- -v, --volume
-
Comoving volume (4pi str) to z (Mpc^3).
- -Y, --usedvelocity
-
Used velocity (in km/s) for this run.
-
Spectral lines
- -i, --lineatz=STR/FLT
-
Wavelength of line (name or wavelength) at z.
- --lineunit=STR
-
Unit ('angstrom', 'nm', 'microm' or 'm').
- --listlines
-
List pre-defined lines at rest frame.
- --listlinesatz
-
List pre-defined lines at the given redshift.
-
Operating modes:
- -?, --help
-
give this help list
- --checkconfig
-
List all config files and variables read.
- --cite
-
BibTeX citation for this program.
- --config=STR
-
Read configuration file STR immediately.
- --config-prefix=STR
-
Custom prefix of option names config files.
- --lastconfig
-
Do not parse any more configuration files.
- --minmapsize=INT
-
Min. bytes to avoid RAM automatically.
- --onlyversion=STR
-
Only run if the program version is STR.
- -P, --printparams
-
Print parameter values to be used and abort.
- --quietmmap
-
Don't print mmap'd file's name and size.
- -S, --setdirconf
-
Set default values for this directory and abort.
- --usage
-
give a short usage message
- -U, --setusrconf
-
Set default values for this user and abort.
- -V, --version
-
print program version
Mandatory or optional arguments to long options are also mandatory or optional for any corresponding short options.
GNU Astronomy Utilities home page: http://www.gnu.org/software/gnuastro/
REPORTING BUGS
Report bugs to [email protected].
COPYRIGHT
Copyright © 2015-2024 Free Software Foundation, Inc. License GPLv3+: GNU General public license version 3 or later.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
Written/developed by Mohammad Akhlaghi
SEE ALSO
The full documentation for CosmicCalculator is maintained as a Texinfo manual. If the info and CosmicCalculator programs are properly installed at your site, the command
-
info CosmicCalculator
should give you access to the complete manual.