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

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

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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,O2,H2O,and 13CO 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 × 104 hr(～108 s).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.

telescopesspace vehicles:instrumentsinstrumentation:miscellaneousISM:lines and bands

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

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National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China

University of Chinese Academy of Sciences,Beijing 100049,China

Research Center for Astronomical Computing,Zhejiang Laboratory,Hangzhou 311100,Zhejiang Laboratory,Hangzhou 311100,China

Jet Propulsion Laboratory,California Institute of Technology,Pasadena,CA 91109,USA

Institute for Frontiers in Astronomy and Astrophysics,Beijing Normal University,Beijing 102206,China

KOSMA,I.Physik.Institut,Universitat zu Köln,Zülpicher Str.77,50937 Koln,Germany

Center for Astrophysics|Harvard & Smithsonian,60 Garden Street,MS 66,Cambridge,MA 02138,USA

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National Natural Science Foundation of China(NSFC)National Natural Science Foundation of China(NSFC)International Partnership Program of the Chinese Academy of SciencesNational Key R&D Program of China

1198810112041302114A11KYSB202100102023YFA1608004

2024

10.1088/1674-4527/ad484f

天文和天体物理学研究
中国科学院国家天文台

天文和天体物理学研究

CSTPCD
影响因子：0.406
ISSN：1674-4527
年,卷(期)：2024.24(6)