Computer Science
Scientific paper
Dec 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992stin...9417629m&link_type=abstract
Unknown
Computer Science
Monochromatic Radiation, Stellar Radiation, Supernova Remnants, Supernovae, Gamma Ray Bursts, Hubble Diagram, Light (Visible Radiation), Monte Carlo Method, Spectrum Analysis, White Dwarf Stars
Scientific paper
The calculated monochromatic light curves of a set of type Ia supernova models are compared with the observed monochromatic light curves of 13 type Ia Supernovae (SNIa). The set consists of 11 type Ia supernova models including deflagrations, detonations, delayed detonations, pulsating delayed detonations and tamped detonations. The theoretical light curves were calculated using our recently developed light curve model. The model incorporates a detailed equation of state with an elaborate treatment of the ionization balance, an implicit grey LTE (Local Thermodynamic Equilibrium) radiation transport scheme based on the moment equations, a total energy equation for the gas and the radiation field, expansion opacities, and a Monte Carlo gamma ray deposition scheme. To evolve the structure of the underlying explosion models homologous expansion is assumed. Based on a comparison of theoretical light curves and observational data, the distances of the patent galaxies were determined. It is shown that SNe Ia allow for a measurement of the value of the Hubble constant provided individual fits are used and if they are located at distances larger than 15 Mpc, because only then they are in the 'Hubble' flow. Taking this restriction into account a Hubble constant can be derived within a 2 sigma error.
Hoeflich Peter
Mueller Ewald
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