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VersionsCOSMICCALCULATOR(1) User Commands COSMICCALCULATOR(1)
NAME
CosmicCalculator - estimate cosmological values
SYNOPSIS
astcosmiccal [OPTION...]
DESCRIPTION
CosmicCalculator is part of GNU Astronomy Utilities 0.22. 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 compre‐
hensive 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 de‐
velopers. 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. covered by 1arcsec at z (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 op‐
tions.
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 0.22 February 2024 COSMICCALCULATOR(1)
NAME
CosmicCalculator - estimate cosmological values
SYNOPSIS
astcosmiccal [OPTION...]
DESCRIPTION
CosmicCalculator is part of GNU Astronomy Utilities 0.22. 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 compre‐
hensive 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 de‐
velopers. 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. covered by 1arcsec at z (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 op‐
tions.
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 0.22 February 2024 COSMICCALCULATOR(1)