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Glossary term: 亚毫米波天文学

Description: 亚毫米天文学是研究天空中远红外光的学科,其波长介于一百微米和一毫米之间。

亚毫米天文学对太空中一些最冷的区域很敏感,可以用来研究消光最严重的区域。它特别适用于研究尘埃密集的恒星形成区域和围绕年轻恒星的行星形成盘。在更大尺度上,它可以用来研究尘埃对星系整体辐射的贡献。

亚毫米天文学的许多天文技术与射电天文学共享,许多亚毫米天文台使用连接在一起的望远镜阵列以实现更高的空间分辨率,这通常只有在更大的望远镜碟形天线下才能获得。不过当然,也存在单碟形天线的天文台。亚毫米波天文台通常位于非常干燥的地方,以减少大气对水蒸气的吸收,否则水蒸气会阻挡从外太空到达我们的亚毫米波辐射。亚毫米天文台通常位于非常干燥的地方,以减少水蒸气对大气的吸收,否则会阻挡来自外太空的亚毫米辐射。常见的这些地点包括夏威夷的莫纳克亚山(Mauna Kea)、智利的查伊南托高原(Chajnantor)或喜马拉雅山脉印度部分的汉勒(Hanle),也有亚毫米望远镜建于南极洲。此外,还有几个亚毫米气球实验。

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