Unusual behavior in Radio Supernova SN 1993J

Chandra, Poonam ; Immler, Stefan ; Weiler, Kurt (2007) Unusual behavior in Radio Supernova SN 1993J AIP Conference Proceedings . pp. 331-338. ISSN 1551-7616

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Official URL: http://doi.org/10.1063/1.3682925

Related URL: http://dx.doi.org/10.1063/1.3682925


Here we present two near‐simultaneous spectra of a Type IIb supernova, SN 1993J taken around day ∼ 3200 and ∼ 3700, observed with the Giant Meterwave Radio Telescope (GMRT) and Very Large Array (VLA). We show the synchrotron cooling break in the optically thin part of both the spectra. Based on these two spectra 1.5 years apart, cooling break frequency seems to be evolving with time. We calculate the magnetic field evolution and put constraints on electron diffusion coefficient from the evolution in break frequency.

Item Type:Article
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ID Code:126634
Deposited On:17 Oct 2022 09:06
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