The hardware and bandwidth for this mirror is donated by dogado GmbH, the Webhosting and Full Service-Cloud Provider. Check out our Wordpress Tutorial.
If you wish to report a bug, or if you are interested in having us mirror your free-software or open-source project, please feel free to contact us at mirror[@]dogado.de.
Added a full thermal cosmology module with nine new exported functions covering the complete early-universe thermal history:
hubble_radiation() — Hubble rate H(T) in the
radiation-dominated era via the Friedmann equation (natural units,
GeV).g_star_eff() — step-function approximation of effective
relativistic degrees of freedom g★(T) across Standard Model epochs.entropy_density() — entropy density s(T) = (2π²/45)
g★_S T³.equilibrium_number_density() — Maxwell-Boltzmann
equilibrium number density n_eq(T).equilibrium_yield() — equilibrium yield Y_eq(x) = n_eq
/ s using the modified Bessel function K₂.boltzmann_pebble_rhs() — the Boltzmann relic-abundance
pebble equation dY/dx governing WIMP thermal
freeze-out.solve_relic_abundance() — full ODE integration of the
pebble equation (via deSolve) returning Y(x) and Ω h². Uses
a log(Y) substitution to handle stiffness.freeze_out_xf() — iterative solver for the freeze-out
parameter x_f = m/T_f.peebles_rhs() — Peebles equation for hydrogen
recombination: returns dx_e/d(ln a), the Peebles C-factor, and the
Lyman-alpha escape rate (SI units).DESCRIPTION updated to document the new
thermal-cosmology and recombination capabilities; deSolve
added to Suggests.NAMESPACE regenerated via
devtools::document() to export all nine new functions.drake_equation() — computes N,
the estimated number of active, communicating civilisations in the Milky
Way, from the seven classic Drake equation parameters
(R_star, fp, ne, fl,
fi, fc, L). Returns a named list
with the numeric result, a substituted equation string, all input
values, and a qualitative six-tier interpretation of N
ranging from “effectively zero” (N < 0.001) to *“galaxy
teeming with life” (N ≥ 10 000).DESCRIPTION updated to mention the Drake equation
capability.deg_to_dms(),
dms_to_deg(), deg_to_hms(),
hms_to_deg(), deg2rad(),
rad2deg().constants_df and retrieval
function constant_value().get_gaia_data().km_to_Mpc() and
Mpc_to_km().photon_energy_density_fn_T(),
photon_energy_density_fn_z(),
photon_number_density_fn_T(),
photon_number_density_fn_z(), Saha_Xe(), and
soln_saha()These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
Health stats visible at Monitor.