Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006lnea....2..215m&link_type=abstract
Lecture Notes and Essays in Astrophysics, vol. 2, p. 215-226.
Astronomy and Astrophysics
Astrophysics
Supernovae, Radio Emission, Vlbi
Scientific paper
Radio emission has been detected from a small subset of supernovae. For those radio supernovae that are strong radio emitters and are not too distant (≤20 Mpc) VLBI observations have been performed and, in some cases, high angular resolution images obtained. Thanks to VLBI observations, source structures and expansion decelerations have been determined. Together with multi-wavelength light curves and optical spectra, these observations have helped characterize the supernova ejecta and the circumstellar medium density profiles. We report on VLBI observations of SN1993J and SN2004et. In the case of supernova SN~1993J, the details of the expansion have been determined with astonishing detail. In the case of supernova SN~2004et, the last radio supernova imaged with VLBI, some considerations about the physical conditions in which this supernova evolves are made.
Alberdi Antonio
Marcaide Jon
Marti-Vidal Ivan
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