Simulated Radio Images and Light Curves of SN 1993J

  • Vikram V. Dwarkadas
  • Amy J. Mioduszewski
  • Lewis T. Ball
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 99)


We present calculations of the radio images and light curves from supernovae, based on high-resolution numerical simulations of the hydrodynamics and radiation transfer in a spherically symmetric medium. As a specific example we model the emission from SN1993J. This supernova does not appear to be expanding in a self-similar fashion, and cannot be adequately fitted with the often-used analytic mini-shell model. We present a good fit to the radio evolution at a single frequency. Both free-free absorption and synchrotron self-absorption are needed to fit the light curve at early times, and a circumstellar density profile of ρr −1.7 provides the best fit to the later data. Comparisons of VLBI images of SN1993J with synthetic model images suggest that internal free-free absorption completely obscures emission at 8.4 GHz passing through the center of the supernova for the first few tens of years after explosion.


Light Curve Light Curf Radio Image Thermal Energy Density Observe Light Curve 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2005

Authors and Affiliations

  • Vikram V. Dwarkadas
    • 1
  • Amy J. Mioduszewski
    • 2
  • Lewis T. Ball
    • 3
  1. 1.ASCI FLASH CenterUniv of ChicagoChicago
  2. 2.NRAOSocorroUSA
  3. 3.CSIRO ATNF Parkes ObservatoryParkesAustralia

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