Jeffrey M. Silverman

TL;DR: Wolf–Rayet-like wind signatures are identified, suggesting a progenitor of the WN(h) subclass (those WRSs with winds dominated by helium and nitrogen, with traces of hydrogen), consistent with recent theoretical predictions.

TL;DR: In this article, the authors present new photometry and spectroscopy of SN 2009ip, indicating that the 2012 outburst transitioned into a genuine core-collapse supernova explosion, and they conclude that the most recent 2012 outburst was the result of a true corecollapse SN IIn that occurred when the progenitor star was in an LBV-like outburst phase, and where the spectrum resembled the early optically thick phases of luminous SNe IIn.

TL;DR: In this paper, the authors presented extensive early photometric and spectroscopic data on supernova (SN) 2008D as well as X-ray data analysis on the associated Swift/X-ray transient (XRT) 080109.

TL;DR: The double explosion of SN 2009ip in 2012 raises questions about our understanding of the late stages of massive star evolution as discussed by the authors, which can be connected with documented mass-loss episodes in the previous years.

TL;DR: Observations of a mass-loss event detected 40 days before the explosion of the type IIn supernova SN 2010mc are reported, finding that the outburst luminosity and velocity are consistent with the predictions of the wave-driven pulsation model, and disfavour alternative suggestions.