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首页> 外文会议>UV and Gamma-Ray Space Telescope Systems pt.2 >HEXIT-SAT: a mission concept for X-ray grazing incidence telescopes from 0.5 to 70 keV
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HEXIT-SAT: a mission concept for X-ray grazing incidence telescopes from 0.5 to 70 keV

机译：HEXIT-SAT：0.5到70 keV的X射线掠射入射望远镜的任务概念

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摘要

While the energy density of the Cosmic X-ray Background (CXB) provides a statistical estimate of the super massive black hole (SMBH) growth and mass density in the Universe, the lack, so far, of focusing instrument in the 20-60 keV (where the CXB energy density peaks), frustrates our effort to obtain a comprehensive picture of the SMBH evolutionary properties. HEXIT-SAT (High Energy X-ray Imaging Telescope SATellite) is a mission concept capable of exploring the hard X-ray sky with focusing/imaging instrumentation, to obtain an unbiased census of accreting SMBH up to the redshifts where galaxy formation peaks, and on extremely wide luminosity ranges. This will represent a leap forward comparable to that achieved in the soft X-rays by the Einstein Observatory in the late 70'. In addition to accreting SMBH, and very much like the Einstein Observatory, this mission would also have the capabilities of investigating almost any type of the celestial X-ray sources. HEXIT-SAT is based on high throughput (> 400 cm~2 @ 30 keV; > 1200 cm~2 @ 1 keV), high quality (15 arcsec Half Power Diameter) multi-layer optics, coupled with focal plane detectors with high efficiency in the full 0.5-70keV range. Building on the BeppoSAX experience, a low-Earth, equatorial orbit, will assure a low arid stable particle background, and thus an extremely good sensitivity for faint hard X-ray sources. At the flux limits of 1/10 μCrab (10-30 keV) and 1/3 /μCrab (20-40 keV) (reachable in one Msec observation) we should detect ～ 100 and ～ 40 sources in the 15 arcmin FWHM Field of View respectively, thus resolving > 80% and ～ 65% of the CXB where its energy density peaks.
机译：尽管宇宙X射线背景（CXB）的能量密度提供了宇宙中超大质量黑洞（SMBH）的生长和质量密度的统计估计，但到目前为止，在20-60 keV范围内缺乏聚焦仪器（在CXB能量密度达到峰值时），使我们难以获得有关SMBH进化特性的全面描述。 HEXIT-SAT（高能X射线成像望远镜SATellite）是一种任务概念，能够通过聚焦/成像仪器探索硬X射线天空，以获得无偏向的SMBH普查，直到星系形成达到顶峰的红移为止；以及在极宽的亮度范围内。这将代表与爱因斯坦天文台在70年代后期用软X射线获得的飞跃相当的飞跃。除了增添SMBH之外，就像爱因斯坦天文台一样，该任务还具有研究几乎所有类型的天体X射线源的能力。 HEXIT-SAT基于高通量（> 400 cm〜2 @ 30 keV;> 1200 cm〜2 @ 1 keV），高质量（15 arcsec Half Power Diameter）多层光学器件以及高效的焦平面探测器在整个0.5-70keV范围内。基于BeppoSAX的经验，低地球赤道轨道将确保较低的干旱稳定粒子背景，从而对微弱的硬X射线源具有极好的灵敏度。在1/10μCrab（10-30 keV）和1/3 /μCrab（20-40 keV）的通量极限下（在一毫秒内即可达到），我们应该在15 arcmin FWHM场中检测〜100和〜40个光源。分别查看，从而解决了能量密度达到峰值的CXB的> 80％和〜65％的问题。

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