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arXiv 1302.4741astro-ph.HEastro-ph.CO
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长持续时间伽马射线暴的宿主星系

The Host Galaxies of Long-Duration Gamma-Ray Bursts

Emily M. Levesque

摘要:

长持续时间的伽马射线暴(LGRB)是宇宙中发生的超高能事件的标志。自从它们被发现以来,我们已经确定这些事件是在罕见的年轻大质量恒星的核心坍塌死亡过程中产生的。LGRB的宿主星系是探测产生其不寻常祖先的环境和种群的绝佳手段。此外,这些年轻的恒星祖先使得LGRB和它们的宿主星系在高红移下成为恒星形成和金属丰度的潜在强大示踪剂。然而,正确地利用LGRB作为早期宇宙的探测器需要彻底了解它们的形成和它们采样的宿主环境。这篇评论回顾了一些最近的工作,对LGRB宿主星系,这些事件和它们的宇宙学应用已经推进了我们的理解,并认为许多新的问题,我们准备在未来几年追求。

英文摘要:

Long-duration gamma-ray bursts (LGRBs) are the signatures of extraordinarily high-energy events occurring in our universe. Since their discovery, we have determined that these events are produced during the core-collapse deaths of rare young massive stars. The host galaxies of LGRBs are an excellent means of probing the environments and populations that produce their unusual progenitors. In addition, these same young stellar progenitors makes LGRBs and their host galaxies valuable potentially powerful tracers of star formation and metallicity at high redshifts. However, properly utilizing LGRBs as probes of the early universe requires a thorough understanding of their formation and the host environments that they sample. This review looks back at some of the recent work on LGRB host galaxies that has advanced our understanding of these events and their cosmological applications, and considers the many new questions that we are poised to pursue in the coming years.

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。

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