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arXiv 1002.1194astro-ph.IM
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EXIST上的软X射线成像仪

The Soft X-ray Imager on board EXIST

L. Natalucci, A. Bazzano, F. Panessa, P. Ubertini, G. Tagliaferri, R. Della Ceca, G. Ghisellini, G. Pareschi, G. Villa, P. Caraveo, M. Fiorini, M. Uslenghi, J. … 展开作者

L. Natalucci, A. Bazzano, F. Panessa, P. Ubertini, G. Tagliaferri, R. Della Ceca, G. Ghisellini, G. Pareschi, G. Villa, P. Caraveo, M. Fiorini, M. Uslenghi, J. E. Grindlay, B. Ramsey

摘要:

软X射线成像仪(SXI)是EXIST上的三台仪器之一,EXIST是一个多波长天文台,负责在硬X射线中对天空进行全球调查,寻找超大质量黑洞(Grindlay & Natalucci,这些会议记录)。EXIST的主要目标之一也是以前所未有的灵敏度研究宇宙中最未知的高能量源,如高红移伽玛暴,它将由航天器通过基于硬X射线定位的自主触发器迅速指向。软X射线望远镜在0.2-3千电子伏的能量带内有效面积约为950平方厘米,响应范围可扩展到10千电子伏,它的存在将允许进行0.1 - 600千电子伏的宽带研究。特别是对活动星系核的光谱成分和状态的研究,对源的变化性的监测,对伽玛暴早期阶段以来的瞬发和余辉辐射的研究,将有助于约束辐射模型,最终有助于在EXIST硬X射线巡天中识别源和表征所探测到的瞬态事件。SXI还将进行巡天:扫描巡天,天空覆盖范围为2 π,极限通量为5 × 10 ^(-14)cgs,加上其他偶然发现。

英文摘要:

The Soft X-ray Imager (SXI) is one of the three instruments on board EXIST, a multi-wavelength observatory in charge of performing a global survey of the sky in hard X-rays searching for Super-massive Black Holes (Grindlay & Natalucci, these Proceedings). One of the primary objectives of EXIST is also to study with unprecedented sensitivity the most unknown high energy sources in the Universe, like high redshift GRBs, which will be pointed promptly by the Spacecraft by autonomous trigger based on hard X-ray localization on board. The presence of a soft X-ray telescope with an effective area of about 950cm2 in the energy band 0.2-3 keV and extended response up to 10 keV will allow to make broadband studies from 0.1 to 600 keV. In particular, investigations of the spectra components and states of AGNs and monitoring of variability of sources, study of the prompt and afterglow emission of GRBs since the early phases, which will help to constrain the emission models and finally, help the identification of sources in the EXIST hard X-ray survey and the characterization of the transient events detected. SXI will also perform surveys: a scanning survey with sky coverage 2pi and a limiting flux of 5x10^(-14) cgs plus other serendipitous.

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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