The THESEUS space mission concept: science case, design and expected performances
The THESEUS space mission concept: science case, design and expected performances
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DOI：
10.1016/j.asr.2018.03.010
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发表时间：
2018-07-01
影响因子：
2.6
通讯作者：
Zicha, J.
中科院分区：
文献类型：
--
作者：
Amati, L.;O'Brien, P.;Zicha, J.
THESEUS是一个空间使命概念，目的是利用伽马射线暴研究早期宇宙，并在多信使和时域天体物理学方面取得重大进展。这些目标将通过一种独特的仪器组合来实现，这种组合允许在广阔的视野内进行伽马射线暴和X射线瞬态探测（大于1 sr），具有0.5-1弧分局域化，能带从几MeV向下延伸到0.3 keV，并且对软X射线域中的瞬态源具有高灵敏度，以及机载即时（几分钟）跟进与0.7米级红外望远镜的成像和光谱能力。忒修斯将完全适合于解决宇宙学中的主要开放问题，例如，星星的形成率和星系间和星系内介质的金属丰度演化，红移接近10，Pop III恒星的特征，再电离的来源和物理学，以及星系光度函数的暗端。此外，它将提供前所未有的能力来监测X射线变化的天空，从而检测，定位和识别引力辐射源的电磁对应物，这可能在20年代末/30年代初由下一代设施如aLIGO/ aVirgo，eLISA，KAGRA和爱因斯坦望远镜进行常规检测。THESEUS还将与下一代多波长观测站（例如，LSST、ELT、SKA、CTA、ATHENA）。(C)2018 COSPAR。由爱思唯尔有限公司出版。保留所有权利。
THESEUS is a space mission concept aimed at exploiting Gamma-Ray Bursts for investigating the early Universe and at providing a substantial advancement of multi-messenger and time-domain astrophysics. These goals will be achieved through a unique combination of instruments allowing GRB and X-ray transient detection over a broad field of view (more than 1 sr) with 0.5-1 arcmin localization, an energy band extending from several MeV down to 0.3 keV and high sensitivity to transient sources in the soft X-ray domain, as well as on-board prompt (few minutes) follow-up with a 0.7 m class IR telescope with both imaging and spectroscopic capabilities. THESEUS will be perfectly suited for addressing the main open issues in cosmology such as, e.g., star formation rate and metallicity evolution of the inter-stellar and intra-galactic medium up to redshift similar to 10, signatures of Pop III stars, sources and physics of re-ionization, and the faint end of the galaxy luminosity function. In addition, it will provide unprecedented capability to monitor the X-ray variable sky, thus detecting, localizing, and identifying the electromagnetic counterparts to sources of gravitational radiation, which may be routinely detected in the late '20s/early '30s by next generation facilities like aLIGO/ aVirgo, eLISA, KAGRA, and Einstein Telescope. THESEUS will also provide powerful synergies with the next generation of multi-wavelength observatories (e.g., LSST, ELT, SKA, CTA, ATHENA). (C) 2018 COSPAR. Published by Elsevier Ltd. All rights reserved.