R.Smareglia, P.A.Mazzali
OAT
The nebular spectra of SNeIa can be used to determine the mass of the SN
ejecta, the density and its distribution, and the distance and reddening
to the SN. Synthetic spectra can be very rapidly computed in NLTE and
compared to the observed ones. Given the relatively large number of
parameters, it is convenient to explore the parameter space in an
automatized form. The nebular spectrum synthesis code can be run in
parallel on a workstation cluster. Each synthetic spectrum is
immediately compared to the observed one.
Exploration of the parameter space can be guided by the information
available on some quantities ( e.g. line width ). The conceptual scheme
of using a workstation LAN as a massively parallel machine and its
practical implementation for the analysis of some cases of "normal" and
possibly peculiar SNeIa are presented and discussed.