CosmicCalculator - estimate cosmological values
astcosmiccal [
OPTION...]
CosmicCalculator is part of GNU Astronomy Utilities 0.19. 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, --angulardimdist
- 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.
- --listlines
- List known lines and rest frame wavelength.
- --listlinesatz
- List known spectral lines at 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.
- --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/
Report bugs to
[email protected].
Copyright © 2015-2022 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
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.