High Frequency Channel for CHAI
CHAI 高频通道
基本信息
- 批准号:530175728
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:德国
- 项目类别:Major Research Instrumentation
- 财政年份:2024
- 资助国家:德国
- 起止时间:2023-12-31 至 无数据
- 项目状态:未结题
- 来源:
- 关键词:
项目摘要
Building on our experience with developing legacy instruments for major observing facilities like Herschel and SOFIA at University of Cologne, we are currently building the Chajnantor Heterodyne Array Instrument (CHAI), to be deployed on the Fred Young Submillimeter Telescope (FYST) of the CCAT observatory on top of Cerro Chajnantor in northern Chile at 5600 m altitude. FYST is a novel 6 m aperture telescope scheduled to see first light in 2024. It will enable highly sensitive wide field observations at submillimeter wavelengths. Its instruments will address science topics ranging from the formation of stars and the evolution of the interstellar medium in the Milky Way and nearby galaxies to galaxies in the early universe and cosmology. CHAI is of particular importance, since it will be the only instrument providing high resolution spectroscopy through its multi-pixel heterodyne spectrometer covering observing frequencies from 400 to 490 GHz in its low frequency channel (LFA) at first light. Accordingly, 25% of the available observing time will be allocated to CHAI and its science cases, as guaranteed in the CCAT consortium partner agreement. We here aim to even better exploit the excellent atmospheric conditions at the CCAT observatory site by adding a high frequency channel (HFA) to CHAI, operating in the 800 GHz atmospheric window. Through simultaneous observation of the LFA and HFA, the performance of the instrument will be doubled, on top of its already unprecedented mapping speed and sensitivity for spectroscopy at these frequencies. More importantly, the second frequency window gives access to unique new science, which is necessary to fully address the research topics defined in the CCAT observatory key program GEco, the Galactic Ecology project. This survey is designed to study the matter cycle in the interstellar medium of the Milky Way and nearby galaxies from the assembly of clouds to the formation of filaments, hubs and cores within them, and eventually stars, which in turn provide stellar feedback. The full science case requires the high frequency observations as they give invaluable information for the interpretation not only of our low frequency observations, but also other large scale surveys and our understanding of the formation of structures in the interstellar medium and their evolution. The key objectives of this proposal are to secure funding to build the CHAI HFA, and thus, to enable and harvest the science that has been envisioned when securing the funding for thr FYST telescope from the DFG and partner resources.
在为科隆大学的Herschel和Sofia等主要观测设施开发传统仪器方面的经验基础上,我们目前正在建造Chajnantor外差阵列仪器(CHAI),将部署在智利北部海拔5600米的Cerro Chajnantor之上的CCAT天文台的Fred Young亚毫米望远镜(FYST)上。FYST是一种新型的6米口径望远镜,计划在2024年看到第一缕曙光。它将使在亚毫米波长进行高灵敏度的广域观测成为可能。它的仪器将处理从恒星的形成和银河系及其附近星系的星际介质的演化到早期宇宙中的星系和宇宙学的一系列科学课题。CHAI具有特别重要的意义,因为它将是唯一一台通过其多像素外差光谱仪提供高分辨率光谱的仪器,该光谱仪在其低频通道(LFA)中覆盖从400 GHz到490 GHz的观测频率。因此,可用观测时间的25%将分配给CHAI及其科学案例,正如CCAT联盟合作伙伴协议所保证的那样。我们的目标是更好地利用CCAT观测站优越的大气条件,为CHAI增加一个高频通道(HFA),在800 GHz的大气窗口中运行。通过同时观测LFA和HFA,该仪器的性能将提高一倍,此外,该仪器在这些频率下已经具有前所未有的测绘速度和光谱灵敏度。更重要的是,第二个频率窗口提供了独特的新科学,这对于充分解决CCAT天文台关键计划GECO(银河生态项目)中定义的研究主题是必要的。这项调查旨在研究银河系和附近星系星际介质中的物质循环,从云层的聚集到其中细丝、枢纽和核心的形成,最后是恒星,这些恒星反过来提供恒星反馈。完整的科学案例需要高频观测,因为它们不仅为解释我们的低频观测提供了宝贵的信息,也为其他大规模调查以及我们对星际介质中结构的形成及其演化的理解提供了宝贵的信息。这项提案的主要目标是确保获得建造柴哈夫望远镜的资金,从而实现和收获在从DFG和合作伙伴资源中为FYST望远镜争取资金时所设想的科学成果。
项目成果
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其他文献
吉治仁志 他: "トランスジェニックマウスによるTIMP-1の線維化促進機序"最新医学. 55. 1781-1787 (2000)
Hitoshi Yoshiji 等:“转基因小鼠中 TIMP-1 的促纤维化机制”现代医学 55. 1781-1787 (2000)。
- DOI:
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LiDAR Implementations for Autonomous Vehicle Applications
- DOI:
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2021 - 期刊:
- 影响因子:0
- 作者:
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吉治仁志 他: "イラスト医学&サイエンスシリーズ血管の分子医学"羊土社(渋谷正史編). 125 (2000)
Hitoshi Yoshiji 等人:“血管医学与科学系列分子医学图解”Yodosha(涉谷正志编辑)125(2000)。
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Effect of manidipine hydrochloride,a calcium antagonist,on isoproterenol-induced left ventricular hypertrophy: "Yoshiyama,M.,Takeuchi,K.,Kim,S.,Hanatani,A.,Omura,T.,Toda,I.,Akioka,K.,Teragaki,M.,Iwao,H.and Yoshikawa,J." Jpn Circ J. 62(1). 47-52 (1998)
钙拮抗剂盐酸马尼地平对异丙肾上腺素引起的左心室肥厚的影响:“Yoshiyama,M.,Takeuchi,K.,Kim,S.,Hanatani,A.,Omura,T.,Toda,I.,Akioka,
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