Provided by: gnuastro_0.5-1_amd64 
NAME
CosmicCalculator - estimate cosmological values
SYNOPSIS
astcosmiccal [OPTION...]
DESCRIPTION
CosmicCalculator is part of GNU Astronomy Utilities 0.5. 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.
-r, --oradiation=FLT
Current radiation density per critical density.
-z, --redshift=FLT
Redshift of interest.
Specific calculations
-a, --absmagconv
Conversion to absolute magnitude (no unit).
-A, --angulardimdist
Angular diameter distance (Mpc).
-b, --lookbacktime
Look back time to z (Gyr).
-c, --criticaldensity
Critical density at z (g/cm^3).
-C, --criticaldensitynow
Critical density now (g/cm^3).
-d, --properdistance
Proper distance to z (Mpc).
-g, --age
Age of universe at z (Gyr).
-G, --agenow
Age of universe now (Gyr).
-L, --luminositydist
Luminosity distance to z (Mpc).
-s, --arcsectandist
Tangential dist. covered by 1arcsec at z (kpc).
-u, --distancemodulus
Distance modulus at z (no units).
-v, --volume
Comoving volume (4pi str) to z (Mpc^3).
Operating modes:
-?, --help
give this help list
--cite BibTeX citation for this program.
--config=STR
Read configuration file STR immediately.
--lastconfig
Do not parse any more configuration files.
--onlyversion=STR
Only run if the program version is STR.
-P, --printparams
Print parameter values to be used and abort.
-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 bug-gnuastro@gnu.org.
COPYRIGHT
Copyright © 2015-2017, 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.