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A comparative modeling of supernova 1993JThe light curve of Supernova 1993J is calculated using two computational radiation transport approaches. The two approaches are represented by the computer codes STELLA and EDDINGTON. The emphasis is on the shock breakout and the photometry in the U, B and V bands during the first 120 days of the supernova. The STELLA model includes implicit hydrodynamics and is able to model early supernova evolution before the expansion is homologous. The STELLA model employs multi-group photonics and is able to follow the radiation as it decouples from the matter. The EDDINGTON code uses an algorithm for integrating the transport equation which assumes homologous expansion and uses a finer frequency resolution. The agreement between the two codes is considered to be satisfactory only in the case where compatible physical assumptions are made concerning the opacity. The assumptions are justified. The continuum spectrum for SN 1993J is predicted near the shock breakout to be superior to that predicted by standard single energy group hydrocodes. The uncertainties involved in current time dependent models of supernova light curves are discussed.
Document ID
19980047335
Acquisition Source
Goddard Space Flight Center
Document Type
Preprint (Draft being sent to journal)
Authors
Blinnikov, Sergei
(Max-Planck-Inst. fuer Astrophysik Garching, Germany)
Eastman, Ron
(California Univ. Santa Cruz, CA United States)
Bartunov, Oleg
(California Univ. Santa Cruz, CA United States)
Popolitov, Vlad
(Sternberg Astronomical Inst. Moscow USSR)
Woosley, Stan
(Max-Planck-Inst. fuer Astrophysik Garching, Germany)
Date Acquired
August 18, 2013
Publication Date
October 1, 1997
Subject Category
Physics (General)
Report/Patent Number
NAS 1.26:207709
NASA/CR-97-207709
MPA-1049
Funding Number(s)
CONTRACT_GRANT: RFFR-96-02-16352
CONTRACT_GRANT: NAG5-2843
CONTRACT_GRANT: W-7405-ENG-48
CONTRACT_GRANT: NSF AST-94-17161
CONTRACT_GRANT: CS-58-93
CONTRACT_GRANT: NSF AST-91-15367
Distribution Limits
Public
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