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.

GNU Astronomy Utilities 0.5                       December 2017                              COSMICCALCULATOR(1)