hubble-constant

Simulate Hubble's Law — measure the expansion rate of the universe from galaxy redshift data

A python package to calibrate levitt law

This project estimates key cosmological parameters like the Hubble constant (H₀) and matter density (Ωₘ) using Type Ia supernova data. It involves distance modulus fitting, cosmological model calculations, and analysis of low-z and high-z supernova subsets.

Dark-siren cosmology with LISA EMRIs — end-to-end engine (GPU EMRI simulation, Fisher/CRB, GLADE+ completeness-corrected H0 inference) with an instructive book

This program classifies the universe as flat, open, or closed based on the matter density parameter (Ωₘ) and dark energy density parameter (ΩΛ). The user enters the Hubble constant, Ωₘ, and ΩΛ, and the program uses these to determine the universe’s geometry.

It is an unified cosmological inference suite.

India Space Academy Internship Projects

The Cepheid Bias: Resolving the Hubble Tension — Environment-dependent Cepheid clock bias under TEP. Generative clock-aware model across 37 SH0ES hosts yields H0 = 66.65 ± 1.58 km/s/Mpc, consistent with Planck at 0.45σ. M31 and OGLE-IV differential tests confirm the predicted sign.

Parameter-Free Derivation of the Hubble Rate

Cosmology

Estimate the Hubble constant using Pantheon+SH0ES supernova data

CANDEL probe: Cepheid-calibrated H0 from the SH0ES hosts with selection-function modelling

Binary console application to calculate the age of the universe based on observations,

CoDE-4: A Self-Consistent Cosmology Solver for Resolving Expansion and Structure Formation Tensions CoDE-4 (Cosmological Dynamical Engine v4) is an independent numerical cosmology framework designed to explore extensions to the standard ΛCDM model while preserving observational consistency across multiple epochs of cosmic evolution.

Public-data traceability archive for Hubble-constant inference, with provenance records, claim–evidence maps, numerical tables, checksums, and verification tools.

stem project cosmology (help is appreciated :D)

CANDEL probe: megamaser warped-disk model and two-stage megamaser H0 pipeline

Re-reduced classification spectra from the ePESSTO+ survey, used in the paper:
"No rungs attached: A distance-ladder free determination of the Hubble constant through type II supernova spectral modelling."
by C. Vogl et al. (2024).

A fully reproducible audit of public Hubble-tension inference, integrating frozen authorities, cross-season validation, claim–evidence traceability, and offline numerical reproduction.

These repositories will be archived on April 14, 2026 (in 2 weeks). All previous versions have been superseded by QCAUS v1.0. Please download any code or data you need before April 14, 2026. New unified QCAUS v1.0 contains everything from the old projects plus major improvements (annotated overlays, ZIP export, historical airport presets, full p