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VLBI observations of SN2011dh: imaging of the youngest radio supernova
I. Marti-Vidal, V. Tudose, Z. Paragi +11
We report on the VLBI detection of supernova SN2011dh at 22GHz using a subset of the EVN array. The observations took place 14 days after the discovery of the supernova, thus resul…
Evidence for Type Ia Supernova Diversity from Ultraviolet Observations with the Hubble Space Telescope
Xiaofeng Wang, Lifan Wang, Alexei V. Filippenko +93
We present ultraviolet (UV) spectroscopy and photometry of four Type Ia supernovae (SNe 2004dt, 2004ef, 2005M, and 2005cf) obtained with the UV prism of the Advanced Camera for Sur…
Multi-Wavelength Properties of the Type IIb SN 2008ax
P. W. A. Roming, T. A. Pritchard, P. J. Brown +11
We present the UV, optical, X-ray, and radio properties of the Type IIb SN 2008ax discovered in NGC 4490. The observations in the UV are one of the earliest of a Type IIb supernova…
1.6 GHz VLBI Observations of SN 1979C: almost-free expansion
J. M. Marcaide, I. Marti-Vidal, M. A. Perez-Torres +4
We report on 1.6 GHz Very-Long-Baseline-Interferometry (VLBI) observations of supernova SN 1979C made on 18 November 2002. We derive a model-dependent supernova size. We also prese…
A Decade of SN1993J: Discovery of Wavelength Effects in the Expansion Rate
J. M. Marcaide, I. Marti-Vidal, A. Alberdi +15
We have studied the growth of the shell-like radio structure of supernova SN1993J in M81 from September 1993 through October 2003 with very-long-baseline interferometry (VLBI) obse…
Radio Supernovae: Circum-Stellar Investigation (C.S.I.) of Supernova Progenitor Stars
Christopher J. Stockdale, Kurt W. Weiler, Nino Panagia +8
Prior to explosion, a supernova progenitor slowly loses significant amounts of its hydrogen envelope in a stellar wind. After the explosion, the blastwave interacts with this wind…