1533年狮子座流星雨亮度的有关研究

A STUDY ON THE BRIGHTNESS OF THE LEO SHOWER OF 1533

根据中国史书和地方志中的记载，１５３３年１０月２３—１１月４日出现的狮子座流星雨，是历史上最盛大的一次流星雨过程。不但出现“天尽赤”、“光著门户”和“唧唧有声”这种空前未有的现象，而且还出现“吓得舟人不敢渡船”的白昼流星雨。本文按历史记载情况，并把它与１８３３年１１月１２日的流星雨比较，估计了流星雨的密度，应用融化理论和能量方程，结合狮子座流星物质的特点，以及大量激流星物质的作用，计算出“天赤”的亮度可达到１ｍ—－１ｍ星等。本文还就本世纪５０年代外国天文学家对这群流星群的物质结构模型、几个主要参数及其曲线做了一些分析和探讨。

According to historical records and local chronicles, the period from Oct. 23 through Nov. 4 of 1533 witnesses the grandest Leo shower in history. It was marked not only by such unprecedented phenomena as 'totally reddened sky', 'illumiuated door', and 'chirping',but also by a daytime meteor shower that 'frightened ferrymen from ferrying'. This paper makes a record-based comparison between the aforesaid shower and the one occurring on Nov. 12 of 1833, from which an estimation is made of the sky density during shower occurrencel and a conclusion conducted of the brightness of 'the reddened sky', arriving at a magnitude of lm-lm. IN so doing, the theory of ablation and energy equation are employed, with the properties of Leo shower substance and the action of numerous micrometeoric substance considered. Discussions and comparisons are also carried out on and between strctural models of the substance of meteor clusters, the few parameters and their curves advanced by researchers abroad in the 1950s.