Man page - astcosmiccal(1)

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• astscript-radial-profile(1)
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Manual

COSMICCALCULATOR

NAME
SYNOPSIS
DESCRIPTION
REPORTING BUGS
COPYRIGHT
SEE ALSO

---

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/cmˆ3).

-C , --criticaldensitynow

Critical density now (g/cmˆ3).

-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 (Mpcˆ3).

-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.

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