Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages


home | help

       CosmicCalculator	- estimate cosmological	values

       astcosmiccal [OPTION...]

       CosmicCalculator	is part	of GNU Astronomy Utilities 0.13.  CosmicCalcu-
       lator 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 par-
       ticular the second contains a very comprehensive	explanation of Cosmic-
       Calculator's invocation:	expected input(s), output(s), and a  full  de-
       scription 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:


       -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.

	      List known lines and rest	frame wavelength.

	      List known spectral lines	at given redshift.

	      Operating	modes:

       -?, --help
	      give this	help list

	      List all config files and	variables read.

       --cite BibTeX citation for this program.

	      Read configuration file STR immediately.

	      Do not parse any more configuration files.

	      Minimum bytes in array to	not use	ram RAM.

	      Only run if the program version is STR.

       -P, --printparams
	      Print parameter values to	be used	and abort.

	      Don't print mmap'd file's	name and size.

       -S, --setdirconf
	      Set default values for this directory and	abort.

	      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:

       Report bugs to

       Copyright  (C)  2015-2020,  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  in-
       stalled at your site, the command

	      info CosmicCalculator

       should give you access to the complete manual.

GNU Astronomy Utilities	0.13	September 2020		   COSMICCALCULATOR(1)


Want to link to this manual page? Use this URL:

home | help