AI 中文总结
本综述聚焦发光快速蓝光学瞬变源（LFBOTs），介绍其发现、观测特性与相关模型，探讨其起源对恒星演化及致密天体形成研究的意义。
AI 中文摘要
通过反复巡天，光学望远镜已揭示出多样的瞬变天体景观，这类短暂天体事件源于恒星及恒星残骸的毁灭。本综述聚焦于近期发现的一类被称为发光快速蓝光学瞬变源（LFBOTs）的现象，其典型代表为瞬变源AT2018cow（“牛”）。AT2018cow的特征在于除了明亮、快速演化且呈蓝色的光学辐射外，还存在X射线和射电波段的明亮辐射。部分LFBOTs具有其他任何瞬变天体类别都未观测到的特性，例如AT2022tsd（“塔斯马尼亚恶魔”）所呈现的持续数分钟的光学耀发。确定LFBOTs的物理起源，对于理解恒星演化以及黑洞等致密天体的形成与增长可能具有重要意义。我们阐述了LFBOTs的发现过程、基本观测特性，以及为解释它们而提出的模型。最后，我们强调了有望解开其起源谜团的研究方向。
英文摘要
By repeatedly mapping the sky, optical telescopes have unveiled a diverse landscape of transients, ephemeral celestial events arising from the destruction of stars and stellar remnants. In this review, we focus on a recently identified phenomenon referred to as luminous fast blue optical transients (LFBOTs) and typified by the transient AT2018cow ("The Cow"). AT2018cow was distinguished by luminous emission at X-ray and radio wavelengths in addition to luminous, rapidly evolving, and blue optical emission. Certain LFBOTs have properties that have not been seen in any other class of transients, such as minutes-duration optical flaring in AT2022tsd ("The Tasmanian Devil"). Determining the physical origin of LFBOTs is likely important for understanding stellar evolution and the formation and growth of compact objects such as black holes. We describe how LFBOTs were discovered, their basic observational properties, and the models that have been proposed to explain them. We conclude by highlighting promising avenues for resolving the mystery of their origins.
CommentsInvited review submitted to Reports on Progress in Physics. 70 pages, 22 figures, 3 tables. Comments welcome
