Physics of SNeIa and Cosmology

Abstract

We give an overview of the current understanding of Type Ia supernovae relevant for their use as cosmological distance indicators. We present the physical basis to understand their homogeneity of the observed light curves and spectra and the observed correlations. This provides a robust method to determine the Hubble constant, 67 +- 8 (2 sigma) km/Mpc/sec, independently from primary distance indicators. We discuss the uncertainties and tests which include SNe Ia based distance determinations prior to delta-Ceph. measurements for the host galaxies. Based on detailed models, we study the small variations from homogeneities and their observable consequences. In combination with future data, this underlines the suitability and promises the refinements needed to determine accurate relative distances within 2 to 3 % and to use SNe Ia for high precision cosmology.

to be published in "Stellar Candles", eds. Gieren et al. Lecture Notes in Physics (http://link.springer.de/series/lnpp)

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• The SDSS-II Supernova Survey: Parameterizing the Type Ia Supernova Rate as a Function of Host Galaxy Properties
• Using Line Profiles to Test the Fraternity of Type Ia Supernovae at High and Low Redshifts
• Signatures of Delayed Detonation, Asymmetry, and Electron Capture in the Mid-Infrared Spectra of Supernovae 2003hv and 2005df
• On the Sensitivity of Deflagrations in Chandrasekhar Mass White Dwarf to Initial Conditions
• Signature of Electron Capture in Iron-Rich Ejecta of SN 2003du
• The Chemical Distribution in a Subluminous Type Ia Supernova: HST Images of the SN 1885 Remnant
• Mid-IR Spectra of Type Ia SN 2014J in M82 Spanning the First Four Months
• Pulsating reverse detonation models of Type Ia supernovae. I: Detonation ignition
• Late-time near-infrared observations of SN 2005df
• Cosmic gamma-ray background from Type Ia supernovae revisited: Evidence for missing gamma-rays at MeV
• X- and Gamma-Ray Flashes from Type Ia Supernovae?
• Type Ia Supernovae keep memory of their progenitor metallicity
• Signatures of Bimodality in Nebular Phase Type Ia Supernova Spectra
• Type Ia Supernova Progenitor Properties and Their Host Galaxies