用于毫米波天文观测的大气波动激光雷达监测
Lidar-monitoring of atmospheric fluctuations for millimeter-wave astronomical observations
- CNRS-UCB, Centre Pierre Binétruy, IRL 2007, CPB-IN2P3(法国国家科学研究中心-加州大学伯克利分校,皮埃尔·比内特鲁中心)
- Lawrence Berkeley National Laboratory(劳伦斯伯克利国家实验室)
- Laboratoire des Sciences du Climat et de l’Environnement (LSCE), CNRS-CEA-UVSQ(气候与环境科学实验室)
- Université Paris-Saclay, CEA, IRFU(巴黎萨克雷大学)
- Université Paris Cité, CNRS, Astroparticule et Cosmologie(巴黎西岱大学)
机构由 AI 辅助整理,请以论文原文为准。
AI总结:
针对地基毫米波观测受水汽污染的问题,提出用共指向拉曼激光雷达连续监测大气水汽,通过模拟和观测证明可显著提升数据质量。
AI中文摘要:
地基毫米波天文观测受到地球大气中不均匀水汽发射的强烈污染。即使是在智利阿塔卡马高原这样的高海拔干燥地点,这种发射也会降低观测效率和数据质量。我们提出使用共指向的专用拉曼激光雷达系统连续监测大气水汽。通过数值模拟和概念验证观测,我们展示了大气激光雷达数据的协同使用如何有潜力显著提高天文数据集的质量。
英文摘要:
Ground-based millimeter-wave astronomical observations suffer from strong contamination by the emission of inhomogeneous water vapor in the Earth's atmosphere. This emission reduces the observing efficiency and data quality even from a high-altitude, dry location such as the Atacama plateau in Chile. We propose to continuously monitor atmospheric water vapor with a co-pointing dedicated Raman lidar system. We show, with numerical simulations and proof-of-concept observations, how a synergistic use of atmospheric lidar data has the potential to substantially improve the quality of astronomical data sets.