English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Supernova (SN) 2008D/XRT 080109 is considered to be the only direct detectionof a shock breakout from a regular SN to date. While a breakout interpretationwas favored by several papers, inconsistencies remain between the observationsand current SN shock breakout theory. Most notably, the duration of theluminous X-ray pulse is considerably longer than expected for a sphericalbreakout through the surface of a type Ibc SN progenitor, and the X-rayradiation features, mainly its flat spectrum and its luminosity evolution, areenigmatic. We apply a recently developed theoretical model for the observedradiation from a Wolf-Rayet SN exploding through a thick wind and show that itnaturally explains all the observed features of SN 2008D X-ray emission,including the energetics, the spectrum and the detailed luminosity evolution.We find that the inferred progenitor and SN parameters are typical for anexploding Wolf-Rayet. A comparison of the wind density found at the breakoutradius to the density at much larger radii, as inferred by late radioobservations, suggests an enhanced mass loss rate taking effect about ten daysor less prior to the SN explosion. This finding joins accumulating evidence fora possible late phase in the stellar evolution of massive stars, involvingvigorous mass loss a short time before the SN explosion.

SN 2008D: A Wolf-Rayet explosion through a thick wind