The Extremes of the Luminosity-Decline Rate Relation
Year: 2025
Type: article
Abstract: The peak luminosity–decline rate relationship for Type Ia supernovae is an important underpinning of modern cosmology. Reproducing it is fundamental to viable progenitor/explosion scenarios. In this talk, I consider the observational properties of the extremes of the relationship: the luminous, slow-declining "91T-like" SNe and the sub-luminous, fast declining "91bg-like" events. Both extremes have long been referred to as "peculiar" (particularly by cosmologists), but I will argue that this is a terminology that should be retired.
Author: Phillips, Mark
Institution: Carnegie Institution for Science
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W6893356299
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