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arXiv 1002.1173astro-ph.IMastro-ph.HE
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用EXIST测量极空

Surveying the Extreme Sky with EXIST

Jonathan E. Grindlay, Lorenzo Natalucci, EXIST Team

摘要:

INTEGRAL和Swift最近进行的硬X射线巡天已经开始揭示致密源的人口统计学特征,包括活动星系核中的超大质量黑洞,并已被证明在跟踪爆炸事件方面非常宝贵,如宇宙学距离的伽马射线暴揭示的大质量恒星的死亡。虽然这些观测对我们理解本宇宙中的源种群做出了重大贡献,但也很明显,揭示驱动第一批大质量恒星和星系诞生和演化的过程需要在灵敏度和研究瞬态现象的能力方面迈出更大的一步,因为它们从一开始就同时覆盖不同的波段。因此,EXIST在作为一项拟议的硬X射线调查飞行任务十年之后,现在已变成一个新的、更先进的概念,船上有三台仪器,覆盖红外/光学和X射线/软伽马射线波段。因此,EXIST的新设计(Grindlay 2009 a)在迅速研究伽玛暴(其中许多具有自主确定的红移)和在0.1到几百keV的高能带中对SMBH和瞬变进行宽带光谱研究的能力方面有了很大的改进,具有灵敏的光学/近红外和软X射线识别和后续研究。

英文摘要:

The recent hard X-ray surveys performed by INTEGRAL and Swift have started to reveal the demographics of compact sources including Super-Massive Black Holes hosted in AGNs and have proven invaluable in tracking explosive events as the death of massive stars revealed by Gamma-Ray Bursts up to cosmological distances. Whereas the observations have contributed significantly to our understanding of the sources populations in the Local Universe, it has also become evident that revealing the processes that drive the birth and evolution of the first massive stars and galaxies would have required a further big step in both sensitivity and capability to study transient phenomena since their very beginning and covering different wavebands simultaneously. Therefore, after its decennial history as a proposed hard X-ray survey mission, EXIST has now turned into a new, more advanced concept with three instruments on board covering the IR/optical and X-ray/soft gamma-ray bands. The EXIST new design (Grindlay 2009a) is therefore much improved in its capability for prompt study of GRBs (with autonomous determination of the redshift for many of them) and broadband spectral studies of SMBHs and transients in the high energy band from 0.1 to several hundred keV, with sensitive optical/NIR and soft X-ray identifications and followup studies.

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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