论文标题
Tau Herculids 2022:视觉数据的速率,数量密度,人口指数和几何影响
Tau Herculids 2022: Rate, number density, population index and geometrical effects from visual data
论文作者
论文摘要
我们分析了2022年5月28日至6月1日之间收集的tau赫拉菌的视觉观察数据。整个样本的种群指数为2.4。在峰值期间,我们发现r = 2.57+-0.23,峰值期r = 2.38+-0.06。 1995年从Schwassmann-Wachmann3(SW3)的1995年弹射器的ZHR最大值在69.450摄氏度的太阳经度(5月31日,05H04MUT, +-5min),ZHR = 55 +-7,对应于空间数密度密度约为大约。在边缘长度为1000 km的立方体中,大于10mg的生态体大于10mg。较早的最大值发生在69.207度的太阳经度(5月30日,23H UT),ZHR = 18+-3,并与1892年的SW3-ejecta暂时相关。讨论了由于大约10度的辐射吸引大约10度而引起的辐射偏移的影响。
We analysed visual observation data of the Tau Herculids collected between 2022 May 28 and June 1. The population index for the entire sample is 2.4. For the pre-peak period we find r=2.57+-0.23, the peak period yields r=2.38+-0.06. The ZHR maximum of the 1995 ejecta from comet Schwassmann-Wachmann3 (SW3) is found at 69.450 deg solar longitude (May 31, 05h04mUT, +-5min) with a ZHR=55+-7, corresponding to a spatial number density ND of approx. 380 meteoroids larger than 10mg in a cube with 1000km edge length. An earlier maximum occurred at 69.207 deg solar longitude (centred May 30, 23h UT) with a ZHR=18+-3 and is tentatively associated with SW3-ejecta from 1892. Effects of the radiant shift due to the large zenith attraction of about 10 deg for the radiant close to the horizon are discussed.