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arXiv 0904.3739astro-ph.IM
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阿塔卡玛大型毫米/亚毫米波天线阵

The Atacama Large Millimeter/submillimeter Array

Alwyn Wootten, A. Richard Thompson

摘要:

阿塔卡马大型毫米/亚毫米阵列(英语:Atacama Large Millimeter/Submillimeter Array,简称ALMA)是一个国际射电望远镜,位于智利北部的阿塔卡马沙漠。ALMA位于海拔5000米的干燥场地上,在仪器波长范围为0.3至10毫米的范围内具有良好的大气传输能力。其中一个是多达64个直径为12米的天线,可以在150米到15公里的范围内以多种模式重新配置。第二个阵列由一组四个12米和十二个7米天线组成,在直径约50米的两个紧密排列的配置中的一个中工作。该仪器将提供关于太阳系、银河系和附近高红移宇宙中原子、分子和电离气体和尘埃的干涉和总功率天文信息。在本文中,我们概述了ALMA的科学驱动因素,技术挑战和计划进展。

英文摘要:

The Atacama Large Millimeter/submillimeter Array (ALMA) is an international radio telescope under construction in the Atacama Desert of northern Chile. ALMA is situated on a dry site at 5000 m elevation, allowing excellent atmospheric transmission over the instrument wavelength range of 0.3 to 10 mm. ALMA will consist of two arrays of high-precision antennas. One, of up to 64 12-m diameter antennas, is reconfigurable in multiple patterns ranging in size from 150 meters up to ~15 km. A second array is comprised of a set of four 12-m and twelve 7-m antennas operating in one of two closely packed configurations ~50 m in diameter. The instrument will provide both interferometric and total-power astronomical information on atomic, molecular and ionized gas and dust in the solar system, our Galaxy, and the nearby to high-redshift universe. In this paper we outline the scientific drivers, technical challenges and planned progress of ALMA.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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