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 bug-gnuastro@gnu.org.

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.

GNU Astronomy Utilities 0.23                        July 2024                                COSMICCALCULATOR(1)