- Deceleration in the Expansion of SN 1993J,
J. M. Marcaide, A. Alberdi, E. Ros, P. Diamond, I. I. Shapiro, J. C. Guirado,
D. L. Jones, F. Mantovani, M. A. Pérez-Torres, R. A. Preston, R. T.
Schilizzi, R. A. Sramek, C. Trigilio, S. D. Van Dyk, K. W. Weiler, &
A. R. Whitney,
IAU Colloquim 164: Radio Emission from Galactic and Extragalactic
Compact Sources, eds. J. A. Zensus, G. B. Taylor, & J. M. Wrobel,
ASP Conference Series Vol. 144, pp. 353-354 , (1998)
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- Abstract
With new 6 cm observations we confirm the self-similar expansion of
SN 1993J previously discovered at 3.6 cm and estimate the expansion
deceleration parameter. The results are inconsistent with the
existence of a constant pre-explosion stellar wind but otherwise
confirm the standard radio supernova model. The first map at 13 cm
showing shell structure is also presented.
Eduardo Ros
