Long-term Integration Ability of the Submillimeter Wave Astronomy Satellite(SWAS)Spectral Line Receivers  

作　　者：Bing-Ru Wang Di Li Paul F.Goldsmith Jingwen Wu Chao-Wei Tsai Rudolf Schieder Gary J.Melnick 

机构地区：[1]National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China [2]University of Chinese Academy of Sciences,Beijing 100049,China [3]Research Center for Astronomical Computing,Zhejiang Laboratory,Hangzhou 311100,China [4]Jet Propulsion Laboratory,California Institute of Technology,Pasadena,CA 91109,USA [5]Institute for Frontiers in Astronomy and Astrophysics,Beijing Normal University,Beijing 102206,China [6]KOSMA,I.Physik.Institut,Universität zu Köln,Zülpicher Str.77,50937 Köln,Germany [7]Center for Astrophysics|Harvard&Smithsonian,60 Garden Street,MS 66,Cambridge,MA 02138,USA

出　　处：《Research in Astronomy and Astrophysics》2024年第6期315-322,共8页天文和天体物理学研究（英文版）

摘　　要：The Submillimeter Wave Astronomy Satellite(SWAS)was the first space telescope capable of high spectral resolution observations of terahertz spectral lines.We have investigated the integration ability of its two receivers and spectrometer during five and a half years of on-orbit operation.The CI,O_(2),H_(2)O,and^(13)CO spectra taken toward all observed Galactic sources were analyzed.The present results are based on spectra with a total integration time of up to 2.72×10~4hr(■10~8s).The noise in the spectra is generally consistent with that expected from the radiometer equation,without any sign of approaching a noise floor.This noise performance reflects the extremely stable performance of the passively cooled front end as well as other relevant components in the SWAS instrument throughout its mission lifetime.

关 键 词：telescopes space vehicles:instruments instrumentation:miscellaneous ISM:lines and bands 

分 类 号：V474.1[航空宇航科学与技术—飞行器设计] P111[天文地球—天文学]