关于在地球大气层中被破坏的小行星碎片的质量分布

IF 1.6 4区 物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS
I. Brykina, L. Egorova
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引用次数: 3

摘要

为了模拟一颗相互独立运动的破碎小行星的碎片与大气的相互作用,有必要知道它们的质量分布。在这方面,可以类比为模拟小行星在外层空间碰撞时的破碎而进行的高速撞击实验。基于冲击实验结果,假设质量分布的幂律为微分形式,得到了碎片质量m归一化为碎片总质量、最大碎片质量分数(s)、最大碎片数量和幂指数的累积碎片数函数。用破碎体累积破碎数公式描述了不同破碎类型的冲击实验结果。通过与Mbale, Bassikounou, Almahata Sitta, Košice和车里雅宾斯克陨石坠落的回收陨石的质量分布进行比较,也验证了所提出的碎片质量分布。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
On the Mass Distribution of Fragments of an Asteroid Disrupted in the Earth’s Atmosphere
To model the interaction with the atmosphere of fragments of a disrupted asteroid, which move independently of each other, it is necessary to know their mass distribution. In this regard, an analogy is drawn with fragmentation in high-speed impact experiments performed to simulate the disruption of asteroids at their collisions in outer space. Based on the results of impact experiments and assuming a power law for the mass distribution in a differential form, we obtained the cumulative number of fragments as a function of the fragment mass m normalized to the total mass of fragments, the mass fraction of the largest fragment(s), the number of the largest fragments, and the power index. The formula for the cumulative number of fragments of a disrupted body is used to describe the results of impact experiments for different fragmentation types. The proposed fragment mass distribution is also tested by comparison with the mass distributions of recovered meteorites in the cases of Mbale, Bassikounou, Almahata Sitta, Košice, and Chelyabinsk meteorite falls.
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来源期刊
Advances in Astronomy
Advances in Astronomy ASTRONOMY & ASTROPHYSICS-
CiteScore
2.70
自引率
7.10%
发文量
10
审稿时长
22 weeks
期刊介绍: Advances in Astronomy publishes articles in all areas of astronomy, astrophysics, and cosmology. The journal accepts both observational and theoretical investigations into celestial objects and the wider universe, as well as the reports of new methods and instrumentation for their study.
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