Commit c9b65d1a authored by Francesco Montanari's avatar Francesco Montanari

Update inline README

* cosmo.el: Give command examples and define cosmological parameters
  variables.
parent 0fd3ecbb
......@@ -34,28 +34,23 @@
;;
;; M-x cosmo-calculator
;;
;; and to set cosmological parameters, type:
;; All cosmological quantities are computed at a given value of the
;; gravitational `redshift' of photons frequency due to the expansion
;; of the Universe.
;;
;; To set the cosmological parameters, type:
;;
;; M-x cosmo-set-params
;;
;; All cosmological quantities are computed at a given value for the
;; gravitational `redshift' of photons frequency due to the expansion of
;; the Universe.
;; The Lambda-CDM model is characterized by the following parameters:
;;
;; The Lambda-CDM model describes a homogeneous and isotropic universe
;; containing a cosmological constant (Lambda) and a Cold Dark Matter
;; (CDM) component, besides ordinary species. It is characterized by
;; the following parameters:
;; - `H0': Hubble parameter (expansion rate) today (e.g., 70 km/s/Mpc).
;; - `omatter': Matter density parameter today (e.g., 0.3).
;; - `olambda': Cosmological constant density parameter (e.g., 0.7).
;; - `orel': Relativistic species density parameter today (e.g., 0.0001).
;;
;; - H_0 :: Hubble parameter (expansion rate) today.
;; - Omega_m0 :: Matter density parameter today.
;; - Omega_Lambda :: Cosmological constant density parameter.
;; - Omega_r0 :: Relativistic species (e.g., photons plus
;; neutrinos) density parameter today.
;; - Omega_k0 :: Curvature density parameter today. This
;; parameter is derived from the others above
;; according to Friedmann's equation
;; Omega_m0 + Omega_Lambda + Omega_r0 + Omega_k0 = 1.
;; The curvature density parameter today is derived from the others
;; above according to Friedmann's equation.
;;
;; Definitions follow Hogg (1999)
;; <https://arxiv.org/abs/astro-ph/9905116>.
......
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