Physical characteristics of space invasion
Physical characteristics of space invasion
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DOI：
10.18372/2411-6602.16.07
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发表时间：
2020-12
期刊：
影响因子：
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通讯作者：
B. Zhilyaev;A. Vidmachenko;A. Steklov
中科院分区：
文献类型：
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作者：
B. Zhilyaev;A. Vidmachenko;A. Steklov
本文介绍了理论发展在空间入侵物理学某些问题上的应用实例。我们发现的流星轨迹中的亮度振荡和“摆动”效应，使我们能够通过测量轨迹中亮度变化的频率（f c）和流星体振荡（f m）来估计流星的一些特性，如果它的速度和高度已知的话。根据拟议的“调整技术”，有可能确定流星在单侧观测时的特征。为了做到这一点，我们设置的初始参数的流星体动力学模型的频率fc和Fm的计算值和测量值的重合。我们的模拟使我们能够找到频率比fc/fm与流星体爆炸中发现的值相一致的高度。利用这种“调整技术”并假定流星的矿物成分，我们估计出流星体的初速度为21公里/秒，质量为850公斤，在约7.9秒内在约20.9公里的高度达到表面速度的临界值，剩余质量约为13.9公斤，剩余速度约为10.9公里/秒。就在这时，陨石爆炸了。
This paper presents an example of the application of theoretical developments on some issues of physics of space invasion. The effect of brightness oscillations and “wobbling” in the meteor trail, which we discovered, allows us to obtain estimates of some characteristics of the meteor by measuring the frequency of changes in the brightness in the trace (f c ) and meteoroid oscillations (f m ), if its velocity and altitude are known. Based on the proposed “tuning technique”, it is possible to determine the characteristics of the meteor at one-sided observations. To do this, we set the initial parameters for the model of meteoroid dynamics by the coincidence of the calculated and measured values of the frequencies f c and f m . Our simulation allows us to find the altitude at which the ratio of frequencies f c / f m coincides with the value found in the explosion of a meteoroid. Using this “tuning technique” and assuming the mineral composition for the meteor, we found estimates of the initial velocity of 21 km/s and the mass of 850 kg of the meteoroid, which reached a critical value of surface speed at an altitude of about 20.9 km in about 7.9 s with a residual mass of about 13.9 kg and a residual speed of about 10.9 km/s. At that moment, the meteoroid exploded.