The comet Halley meteoroid stream: just one more model
The comet Halley meteoroid stream: just one more model
复制标题
哈雷彗星流星体流：又一个模型
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
G. Ryabova
中科院分区：
文献类型：
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作者：
G. Ryabova
目前模拟哈雷彗星流星流的形成和演化的尝试是基于哈雷彗星喷出的大颗粒尘埃的初步物理模型。由500-5000个试验粒子组成的模型流是根据以下抛射方案构建的。粒子沿着彗星轨道(r<；9Au)在向阳的70°锥体内被抛出，抛射速率与r-4成正比。考虑了两种球形颗粒：1 g和0.001 g，密度为0.25g cm-3。对公元前1404年、公元141年和公元837年的抛射进行了模拟。用Everhart程序对运动方程进行了数值积分。结果，哈雷彗星流星流的复杂精细结构被揭示出来，它不是由细丝组成，而是由层组成。
The present attempt to simulate the formation and evolution of the comet Halley meteoroid stream is based on a tentative physical model of dust ejection of large particles from comet Halley. Model streams consisting of 500-5000 test particles have been constructed according to the following ejection scheme. The particles are ejected from the nucleus along the cometary orbit (r < 9 au) within the sunward 70° cone, and the rate of ejection has been taken as proportional to r - 4 . Two kinds of spherical particles have been considered: 1 and 0.001 g with density equal to 0.25 g cm - 3 . Ejections have been simulated for 1404 BC, 141 AD and 837 AD. The equations of motion have been numerically integrated using the Everhart procedure. As a result, a complicated fine structure of the comet Halley meteoroid stream, consisting not of filaments but of layers, has been revealed.