Progenitor age-bias-corrected Type Ia supernovae favor a logarithmic luminosity-distance relation

arXiv:2608.00806 · astro-ph.CO, gr-qc · Submitted 2026-08-01 · Read on arXiv

Hoang Ky Nguyen

astro-ph.CO, gr-qc

Submitted: 2026-08-01

Comments: 8 pages, 4 figures. Typos corrected

Code: https://github.com/HoangNguyenUBB/SNeIa-loga-relation

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Calibration — 5× in this paper · explained in 7 episodes
• Systematic Bias — 3× in this paper · explained in 3 episodes
• Alignment — 2× in this paper · explained in 1 episode
• Benchmark — 1× in this paper · explained in 2 episodes
• Degeneracy — 1× in this paper · explained in 3 episodes

Sources

• Environmental dependence of Type Ia supernova standardization on the local luminosity-weighted age
• Still non-accelerating: age-bias correction in supernova cosmology is robust to host-progenitor age mapping
• Old Universe, Young SNe Ia: A Statistical Analysis of Type Ia Supernova Progenitor Age from 6,983 TITAN Host Galaxies, and Implications for Cosmology
• Cosmological Impact of Redshift-Dependent Type Ia Supernovae Calibration
• An intrinsic kinematic relation $\boldsymbol{c=\frac{c_{0}}{H_{0}}\,\dot{a}}\,$ inferred from Type Ia supernovae

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