Abstract

Venus was the first of the planets of the Solar System in the atmosphere of which electrical phenomena similar to lightning in the Earth’s atmosphere were discovered. Electrical discharges (lightning in the atmosphere of Venus) were discovered in 1978 in the Venera-12, -11, and Pioneer Venus missions, based on their electromagnetic radiation. The paradox, however, was that the search for optical flares remained unsuccessful for the past 40 years. In 2015, the Akatsuki spacecraft of the Japan Aerospace Exploration Agency was launched into orbit Venus satellite. It was designed to search for lightning and other studies of the meteorology of Venus by recording radiation in selected spectral ranges. In 2016, the Akatsuki orbiter successfully performed detailed observations of Venus in the near-infrared range in the “transparency windows” of the planet’s atmosphere, as well as in the ultraviolet and other ranges. The article presents the results of an alternative search for and successful detection of lightning flashes according to the Akatsuki project, but not in the ultraviolet or visible ranges, but in the near-IR range. A comparison of the results of calculations based on models of terrestrial lightning with the results of measurements made by the IR2 camera of the Akatsuki mission on Venus at a wavelength of 2.26 μm shows a close agreement between the experimental and calculated data.

中文翻译：

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在近红外范围内检测到金星云层中的闪电耀斑

摘要

金星是太阳系中第一颗在大气层中发现类似于地球大气层中闪电的电现象的行星。1978 年， Venera-12、-11和Pioneer Venus任务中根据其电磁辐射发现了放电现象（金星大气层中的闪电） 。然而矛盾的是，过去 40 年来对光学耀斑的搜寻始终没有成功。2015年，日本宇宙航空研究开发机构的“晓”号宇宙飞船发射进入金星卫星轨道。它的目的是通过记录选定光谱范围内的辐射来寻找闪电和金星气象学的其他研究。2016年，“晓”轨道飞行器成功地在金星大气“透明窗口”的近红外范围以及紫外和其他范围内对金星进行了详细观测。本文介绍了根据Akatsuki项目对闪电进行替代搜索和成功检测的结果，但不是在紫外线或可见光范围内，而是在近红外范围内。将基于地面闪电模型的计算结果与金星上的Akatsuki任务IR2相机在2.26μm波长下进行的测量结果进行比较，结果表明实验数据与计算数据非常吻合。