Journal article

Luminosity Distance Dispersion in Swiss-cheese Cosmology as a Function of the Hole Size Distribution

T Cheunchitra, A Melatos, RL Webster

The Astrophysical Journal | American Astronomical Society | Published : 2025

Abstract

Abstract The luminosity distance–redshift ( D L – z ) relation derived from Type Ia supernovae (SNe Ia) yields evidence for a nonzero cosmological constant. SNe Ia analyses typically fit to the functional form D L ( z ) derived theoretically from the homogeneous and isotropic Friedmann–Lemaitre–Robertson–Walker (FLRW) metric. Yet, the metric in the epoch relevant to SNe Ia measurements deviates slightly from FLRW, due to gravitational clumping of mass into ..

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University of Melbourne Researchers

Grants

Awarded by Department of Education and Training ∣ Australian Research Council