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Glossary term: 亞毫米波天文學

Description: 亞毫米天文學是研究天空中遠紅外光的學科,其波長介於一百微米和一毫米之間。

亞毫米天文學對太空中一些最冷的區域很敏感,可以用來研究消光最嚴重的區域。它特別適用於研究塵埃密集的恆星形成區域和圍繞年輕恆星的行星形成盤。在更大尺度上,它可以用來研究塵埃對星系整體輻射的貢獻。

亞毫米天文學的許多天文技術與射電天文學共享,許多亞毫米天文臺使用連接在一起的望遠鏡陣列以實現更高的空間分辨率,這通常只有在更大的望遠鏡碟形天線下才能獲得。不過當然,也存在單碟形天線的天文臺。亞毫米波天文臺通常位於非常乾燥的地方,以減少大氣對水蒸氣的吸收,否則水蒸氣會阻擋從外太空到達我們的亞毫米波輻射。亞毫米天文臺通常位於非常乾燥的地方,以減少水蒸氣對大氣的吸收,否則會阻擋來自外太空的亞毫米輻射。常見的這些地點包括夏威夷的莫納克亞山(Mauna Kea)、智利的查伊南托高原(Chajnantor)或喜馬拉雅山脈印度部分的漢勒(Hanle),也有亞毫米望遠鏡建於南極洲。此外,還有幾個亞毫米氣球實驗。

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