arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 2007.08543astro-ph.HE
收藏

扩展材料的冲击冷却发射再研究

Shock Cooling Emission from Extended Material Revisited

Anthony L. Piro, Annastasia Haynie, Yuhan Yao

摘要:

在激波爆发之后,天体物理爆炸的辐射主要是激波加热物质膨胀和冷却时的辐射,称为激波冷却辐射(SCE)。SCE的光度与发射物质的初始半径成正比,这使得它的测量对于研究这些爆炸的祖先是有用的。最近的观测表明,一些瞬态事件有特别突出的SCE,表明一个大的半径,这可能是由于低质量的扩展材料。出于这一动机,我们提出了一个更新的分析模型SCE,可以用来适应这些观察,并了解更多关于这些事件的起源。该模型与数值模拟进行比较,以评估其有效性和局限性。我们还讨论了SNe 2016gkg和2019dge,这两个瞬变具有较大的早期光度峰值,以前被归因于扩展材料的SCE。我们发现,他们的早期幂律演化和测光很好地匹配我们的模型,加强支持这种解释。

英文摘要:

Following shock breakout, the emission from an astrophysical explosion is dominated by the radiation of shock heated material as it expands and cools, known as shock cooling emission (SCE). The luminosity of SCE is proportional to the initial radius of the emitting material, which makes its measurement useful for investigating the progenitors of these explosions. Recent observations have shown some transient events have especially prominent SCE, indicating a large radius that is potentially due to low mass extended material. Motivated by this, we present an updated analytic model for SCE that can be utilized to fit these observations and learn more about the origin of these events. This model is compared with numerical simulations to assess its validity and limitations. We also discuss SNe 2016gkg and 2019dge, two transients with large early luminosity peaks that have previously been attributed to SCE of extended material. We show that their early power-law evolution and photometry are well matched by our model, strengthening support for this interpretation.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑