中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Terahertz and far-infrared windows opened at Dome A in Antarctica

文献类型:期刊论文

作者Shi, Sheng-Cai1; Paine, Scott2; Yao, Qi-Jun1; Lin, Zhen-Hui1; Li, Xin-Xing1,8; Duan, Wen-Ying1; Matsuo, Hiroshi3; Zhang, Qizhou2; Yang, Ji1; Ashley, M. C. B.4
刊名NATURE ASTRONOMY
出版日期2017
卷号1期号:1页码:7
ISSN号2397-3366
DOI10.1038/s41550-016-0001
英文摘要

The terahertz and far-infrared band, ranging from approximately 0.3 THz to 15 THz (1 mm to 20 mu m), is important for astrophysics as it hosts the peak of the thermal radiation of the cold component of the Universe as well as many spectral lines that trace the cycle of interstellar matter1-8. However, water vapour makes the terrestrial atmosphere opaque to this frequency band over nearly all of the Earth's surface9. Early radiometric measurements10 below 1 THz at Dome A (80 degrees 22'S, 77 degrees 21' E), the highest point of the cold and dry Antarctic ice sheet, suggest that this site may offer the best possible access for ground-based astronomical observations in the terahertz and far-infrared band. To fully assess the site conditions and to address the uncertainties in radiative transfer modelling of the atmosphere, we carried out measurements of atmospheric radiation from Dome A with a Fourier transform spectrometer, spanning the entire water vapour pure rotation band from 20 mu m to 350 mu m. Our measurements reveal substantial transmission in atmospheric windows throughout the whole band. By combining our broad-band spectra with data on the atmospheric state over Dome A, we set new constraints on the spectral absorption of water vapour at upper tropospheric temperatures, which is important for accurate modelling of the terrestrial climate. We find that current spectral models significantly underestimate the H2O continuum absorption.

WOS关键词WATER-VAPOR CONTINUUM ; ABSORPTION ; MILLIMETER ; EMISSION ; POLYMERS ; HERSCHEL ; REGION ; MODEL
WOS研究方向Astronomy & Astrophysics
语种英语
出版者NATURE PUBLISHING GROUP
WOS记录号WOS:000406527100001
源URL[http://libir.pmo.ac.cn/handle/332002/22655]  
专题中国科学院紫金山天文台
通讯作者Shi, Sheng-Cai
作者单位1.Chinese Acad Sci, Key Lab Radio Astron, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
2.Smithsonian Astrophys Observ, Cambridge, MA 02138 USA
3.Natl Astron Observ Japan, Mitaka, Tokyo 1818588, Japan
4.Univ New South Wales, Sydney, NSW 2052, Australia
5.Tianjin Normal Univ, Tianjin 300386, Peoples R China
6.Chinese Acad Sci, Nanjing Inst Astron Opt & Technol, Natl Astron Observ, Nanjing 210042, Jiangsu, Peoples R China
7.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
8.Chinese Acad Sci, Suzhou Inst Nanotech & Nanobion, Suzhou 215123, Peoples R China
推荐引用方式
GB/T 7714
Shi, Sheng-Cai,Paine, Scott,Yao, Qi-Jun,et al. Terahertz and far-infrared windows opened at Dome A in Antarctica[J]. NATURE ASTRONOMY,2017,1(1):7.
APA Shi, Sheng-Cai.,Paine, Scott.,Yao, Qi-Jun.,Lin, Zhen-Hui.,Li, Xin-Xing.,...&Hu, Zhong-Wen.(2017).Terahertz and far-infrared windows opened at Dome A in Antarctica.NATURE ASTRONOMY,1(1),7.
MLA Shi, Sheng-Cai,et al."Terahertz and far-infrared windows opened at Dome A in Antarctica".NATURE ASTRONOMY 1.1(2017):7.

入库方式: OAI收割

来源:紫金山天文台

浏览0
下载0
收藏0
其他版本

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。