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Understanding the Unusual X-Ray Emission Properties of the Massive, Close Binary WR 20a: A High Energy Window into the Stellar Wind Initiation Region
Gabriela Montes, Enrico Ramirez-Ruiz, Fabio De Colle +1
The problem of explaining the X-ray emission properties of the massive, close binary WR 20a is discussed. Located near the cluster core of Westerlund 2, WR 20a is composed of two n…
Radio limits on off-axis GRB afterglows and VLBI observations of SN 2003gk
M. F. Bietenholz, F. De Colle, J. Granot +2
We report on a VLA survey for late-time radio emission from 59 supernovae (SNe) of Type I b/c, which have been associated with long-duration gamma-ray bursts (GRBs). An "off-axis"…
The Morphology and Dynamics of Jet-Driven Supernova Remnants: the Case of W49B
Diego F. Gonzalez-Casanova, Fabio De Colle, Enrico Ramirez-Ruiz +1
The circumstellar medium (CSM) of a massive star is modified by its winds before a supernova (SN) explosion occurs, and thus the evolution of the resulting supernova remnant (SNR)…
Conditions For Successful Helium Detonations In Astrophysical Environments
Cole Holcomb, James Guillochon, Fabio De Colle +1
Several models for type Ia-like supernovae events rely on the production of a self-sustained detonation powered by nuclear reactions. In the absence of hydrogen, the fuel that powe…