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Paper: Deceleration in the Expansion of SN 1993J
Volume: 144, Radio Emission from Galactic and Extragalactic Compact Sources, IAU Colloquium 164
Page: 353
Authors: Marcaide, J. M.; Alberdi, A.; Ros, E.; Diamond, P.; Shapiro, I. I.; Guirado, J. C.; Jones, D. L.; Mantovani, F.; Perez-Torres, M. A.; Preston, R. A.; Schilizzi, R. T.; Sramek, R. A.; Trigilio, C.; van Dyk, S. D.; Weiler, K. W.; Whitney, A. R.
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.
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