PLOHOV E.S / RESEARCH WORKSTATION / 05 TOOLS
Don't just watch.
Check and calculate.
Cosmological distances, lensing, spectral shift, telescope limit and Gaia query. Prerequisites, units, and exports are part of the result, not the fine print.
01 / FLAT ΛCDM / LOCAL COMPUTATION
Distances and time in the expanding universe
E(z) = √[Ωm(1+z)³ + 1 − Ωm]; Dᶜ = (c/H₀) ∫ dz/E(z)
Flat ΛCDM, w = −1; without radiation and evolution of dark energy. The example H₀ = 67.4, Ωm = 0.315 corresponds to the commonly used Planck 2018 parameterization, not the new measurement. Simpson integration: 2048 intervals. Input data uncertainties are not propagated.
Above your horizon
Site, UTC time, 12 targets and export of observation plan.
REPRODUCEWork with scientific archives
Data, bibliography and open source software.
IEEE 754 double educational numerical tools. Not a substitute for peer review, calibration, and uncertainty propagation. The parameters are calculated only in the browser and are not sent to the server.