Type Ia Supernovae: Non-standard Candles of the Universe

Abstract

We analyze the influence of the evolution of light absorption by gray dust in the host galaxies of type Ia supernovae (SNe Ia) and the evolution of the mean combined mass of close-binary carbon-oxygen white dwarfs merging due to gravitational waves (SNe Ia precursors) on the interpretation of Hubble diagrams for SNe Ia. A significant increase in the mean SNe Ia energy due to the higher combined masses of merging dwarfs should be observable at redshifts z > 2. The observed relation between the distance moduli and redshifts of SNe Ia can be interpreted not only as evidence for accelerated expansion of the Universe, but also as indicating time variations of the gray-dust absorption of light from these supernovae in various types of host galaxies, observational selection effects, and the decrease in mean combined masses of merging degenerate dwarfs.

14 pages, 2 figures

References in corpus (7)

• New Hubble Space Telescope Discoveries of Type Ia Supernovae at z > 1: Narrowing Constraints on the Early Behavior of Dark Energy
• Improved Cosmological Constraints from New, Old and Combined Supernova Datasets
• The supernova delay time distribution in galaxy clusters and implications for Type-Ia progenitors and metal enrichment
• The Impact of Cosmic Dust on Supernova Cosmology
• Measures of star formation rates from Infrared (Herschel) and UV (GALEX) emissions of galaxies in the HerMES fields
• Evolution of the number of accreting white dwarfs with shell nuclear burning and of occurrence rate of SN Ia
• Host Galaxy Extinction of SNIa: Co-evolution of ISM Structure and Extinction Law with Star-Formation

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• The dependency of Type Ia Supernova parameters on host galaxy morphology for the Pantheon cosmological sample
• Cosmological acceleration
• The influence of host galaxy morphology on the properties of Type Ia supernovae from the JLA compilation
• Binary population synthesis for the core-degenerate scenario of type Ia supernova progenitors
• Interstellar Extinction in Galactic Cirri in SDSS Stripe 82
• The evolution of relative frequencies of ONe and CO SNe Ia