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Exploring the Luminosity-Timescale Phase Space of Exploding Transients

探索爆炸瞬变的光度-时间尺度相空间

基本信息

批准号：
2159908
负责人：
金额：
--
依托单位：
Liverpool John Moores University
依托单位国家：
英国
项目类别：
Studentship
财政年份：
2018
资助国家：
英国
起止时间：
2018 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=studentship-2159908
关键词：
Exploring Luminosity Timescale Phase Space

项目摘要

"This project will explore explosive transients in the luminosity-timescale gaps within the Kasliwal Diagram, and also exploit much larger datasets in order to build up a fuller picture of the luminosity-timescale diagram of explosive transients, with the intention of studying a variety of poorly known phenomena. These phenomena range from faint and fast novae to some of the most luminous supernovae.Initial focus will be on classical novae with high luminosities and fast declines within the M31 galaxy, which allows for large statistical samples of spectroscopically confirmed events. Statistical methods most commonly used on supernovae, will for the first time be used to probe these events. Further to this, other transients will be investigated, namely the mysterious supernovae IIn class which have very differing properties and ambiguities related to Impostor events. These supernovae are likely misclassified with some being very bright core-collapse progenitors, some likely to be thermonuclear events interacting with the CSM, some probably having a progenitor on the very low end of the core-collapse mass scale and others being on the very high end, others are far from any star forming regions. This project will focus on increasing the numbers of events within these poorly populated regions of the Kasliwal Diagram in order to apply statistical methods to probe the progenitors of a range of transient objects, both through observations of historic events, and through continuous monitoring for this phase space to increase the populations."

“这个项目将探索Kasliwal图中亮度-时标间隙中的爆炸瞬变，并利用更大的数据集，以建立爆炸瞬变的亮度-时标图的更完整的图片，旨在研究各种鲜为人知的现象。这些现象包括从微弱和快速的新星到一些最明亮的超新星。最初的重点将是M31星系内具有高亮度和快速衰减的经典新星，这使得光谱证实的事件的大量统计样本成为可能。最常用于超新星的统计方法将首次用于探测这些事件。除此之外，还将研究其他瞬变现象，即神秘的超新星IIn类，它们具有与冒名顶替事件相关的非常不同的属性和模糊性。这些超新星可能被错误地分类，有些是非常明亮的核心坍缩的祖先，有些可能是与CSM相互作用的热核事件，有些可能具有核心坍缩质量尺度非常低端的祖先，有些则是非常高端的，其他的远离任何星星形成区域。该项目将侧重于增加Kasliwal图中这些人口稀少地区的事件数量，以便应用统计方法来探测一系列瞬态物体的祖先，既通过观察历史事件，也通过持续监测这一相空间来增加人口。"