Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999a%26a...345..211l&link_type=abstract
Astronomy and Astrophysics, v.345, p.211-220 (1999)
Astronomy and Astrophysics
Astrophysics
99
Radiative Transfer, Methods: Numerical, Stars: Atmospheres, Stars: Supernovae: General
Scientific paper
Improvements in Monte Carlo techniques for computing synthetic spectra of supernovae (SNe) are described and tested using a simplified model for the atmosphere of a Type Ia SN. In the first innovation, a procedure is implemented that replaces the previously-assumed line formation by resonance scattering with a branching model using Sobolev escape probabilities, and the resulting improvement is demonstrated by comparison with exact calculations for Fe Ii. In a second innovation, greatly accelerated convergence is achieved in the computation of emergent spectra by replacing the crude procedure of binning escaping Monte Carlo quanta with one based on the formal integral for emergent intensity. This is made possible by extracting line- and continuum source functions from a Monte Carlo simulation. Because of accelerated convergence, the required size of the Monte Carlo simulations is reduced by a factor ~ 300, thus greatly speeding up the calculation of model spectra and thereby allowing interactive diagnostic analyses of the spectra of newly-discovered SNe.
No associations
LandOfFree
Improved Monte Carlo techniques for the spectral synthesis of supernovae does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Improved Monte Carlo techniques for the spectral synthesis of supernovae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Improved Monte Carlo techniques for the spectral synthesis of supernovae will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1119198