Balloon-borne Astronomical Observations in Antarctica
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摘要: 文章针对南极地区开展的高空球载天文观测实验进行汇总研究。南极大气凭借极低水汽和多种波段高透射率成为天文观测的绝佳地点之一。其独特的极昼现象和稳定极地涡旋也为气球提供了长时定高飞行与绕极漂流条件,使高空气球成为低成本、高效率的观测平台。统计表明,南极高空科考以麦克默多站为主要发放基地,在1984~2024年间累计完成数百项球载实验。其中天文观测占主要部分,涵盖粒子物理与非粒子物理两大领域,涉及到包括宇宙微波背景辐射各向异性与偏振测量,高能电磁辐射采集,星系太赫兹与宽波段光谱成像,宇宙射线的元素组成和粒子能谱分析,超高能宇宙射线中微子观测,反质子、奇异粒子、反氦核捕捉等多项前沿科学实验。近年来,高空科学气球正逐渐成为极地天文观测的重要载体之一,加快极地气球基地建设,开展环极气球实验,有助于增强我国的科考竞争力,提高南极地区国际话语权。Abstract: This article comprehensively reviews high-altitude balloon-borne astronomical experiments conducted in the Antarctic region. The Antarctic atmosphere, characterized by extremely low water vapor levels and high transmittance across multiple wavebands, offers exceptional conditions for astronomical observations. Its unique polar day phenomenon and stable polar vortex also provide ideal environments for long-duration, stable-altitude flights and circumpolar drifting of balloons, making high-altitude balloons a cost-effective and efficient observation platform. Statistics indicate that McMurdo Station serves as the primary launch base for Antarctic high-altitude scientific endeavors, with hundreds of balloon-borne experiments conducted between 1984 and 2024. Astronomical observations constitute the majority of these experiments, spanning both particle and non-particle physics domains. These include cutting-edge scientific investigations such as anisotropy and polarization measurements of cosmic microwave background radiation, high-energy electromagnetic radiation collection, terahertz and broadband spectral imaging of galaxies, analysis of the elemental composition and energy spectra of cosmic rays, observations of ultra-high-energy cosmic ray neutrinos, and the detection of antiprotons, exotic particles, and anti-helium nuclei. In recent years, high-altitude scientific balloons have increasingly become a vital platform for polar astronomical observations. Accelerating the development of polar balloon bases and conducting circumpolar balloon experiments will enhance scientific competitiveness and strengthen international influence in the Antarctic region.
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