Publications by authors named "J Parrent"
We present multi-wavelength observations of SN 2014C during the first 500 days. These observations represent the first solid detection of a young extragalactic stripped-envelope SN out to high-energy X-rays ~40 keV. SN 2014C shows ordinary explosion parameters ( ~ 1.
View Article and Find Full Text PDFThere is a consensus that type Ia supernovae (SNe Ia) arise from the thermonuclear explosion of white dwarf stars that accrete matter from a binary companion. However, direct observation of SN Ia progenitors is lacking, and the precise nature of the binary companion remains uncertain. A temporal series of high-resolution optical spectra of the SN Ia PTF 11kx reveals a complex circumstellar environment that provides an unprecedentedly detailed view of the progenitor system.
View Article and Find Full Text PDFArticle Synopsis
- Type Ia supernovae are crucial for understanding the accelerated expansion of the Universe, yet many details about their origins and explosions remain unclear.
- Researchers believe these explosions result from white dwarfs in binary systems, but the nature of their companions is still uncertain.
- The study of supernova SN 2011fe in the galaxy M101 suggests its progenitor was likely a carbon-oxygen white dwarf with a main-sequence companion, confirmed by spectroscopic observations and pre-explosion images.