ESPRIT: a study concept for a far-infrared interferometer in space
ESPRIT: a study concept for a far-infrared interferometer in space
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ESPRIT：太空远红外干涉仪的研究概念
DOI：
10.1117/12.789603
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发表时间：
2008
影响因子：
2
通讯作者：
P. Yagoubov
中科院分区：
文献类型：
--
作者：
W. Wild;T. de Graauw;F. Helmich;A. Baryshev;J. Cernicharo;J. Gao;A. Gunst;A. Bos;J. D. den Herder;B. Jackson;V. Koshelets;H. Langevelde;P. Maat;J. Martín;J. Noordam;P. Roelfsema;L. Venema;P. Wesselius;P. Yagoubov
在远红外(FIR) /太赫兹波段，观测设备的角度（通常是光谱）分辨率仍然非常有限，尽管这一频率范围已成为现代天体物理学的首要重要性。ALMA（阿塔卡马大型毫米波阵列）具有极高的灵敏度和角分辨率，只能覆盖大约1太赫兹的频率，而欧空局赫歇尔空间天文台的HIFI仪器将提供有限的角分辨率（10到30弧秒），最高可达2太赫兹。对恒星和行星形成区域的观测需要极高的角分辨率以及全太赫兹波段的频率分辨率。为了打开这些区域的高分辨率天体物理学，我们提出了一个外差空间干涉仪的研究概念，ESPRIT（探索性亚毫米空间射电干涉望远镜）。这项任务将覆盖从地面无法到达的太赫兹区域，并且超出了詹姆斯韦伯太空望远镜（JWST）的操作范围。
In the far-infrared (FIR) / THz regime the angular (and often spectral) resolution of observing facilities is still very restricted despite the fact that this frequency range has become of prime importance for modern astrophysics. ALMA (Atacama Large Millimeter Array) with its superb sensitivity and angular resolution will only cover frequencies up to about 1 THz, while the HIFI instrument for ESA'a Herschel Space Observatory will provide limited angular resolution (10 to 30 arcsec) up to 2 THz. Observations of regions with star and planet formation require extremely high angular resolution as well as frequency resolution in the full THz regime. In order to open these regions for high-resolution astrophysics we present a study concept for a heterodyne space interferometer, ESPRIT (Exploratory Submm Space Radio-Interferometric Telescope). This mission will cover the Terahertz regime inaccessible from the ground and outside the operating range of the James Webb Space Telescope (JWST).