Supported models

Peculiar-velocity models

These models work in units of \(h^{-1}\,\mathrm{Mpc}\) and can be analysed jointly via JointPVModel with user-specified shared parameters.

• Tully–Fisher relation (TFRModel): 2MTF, SFI++, CF4-TFR

• Type Ia supernovae (SNModel): LOSS, Foundation

• Pantheon+ (PantheonPlusModel): Pantheon+ with full covariance matrix

• Fundamental Plane (FPModel): 6dFGS-FP, SDSS-FP

\(H_0\) inference

• Cepheid-calibrated \(H_0\) (CH0Model): 35 Cepheid host galaxies from SH0ES

Package structure

• candel – cosmography, inference, evidence, utilities

• candel.model – forward models for each distance indicator

• candel.pvdata – data loaders for all supported catalogues

• candel.cosmo – growth rate, PV covariance matrices

• candel.field – 3D density/velocity field loading and LOS interpolation

• candel.redshift2real – observed to cosmological redshift mapping

• candel.mock – synthetic catalogue generation