月球撞击闪光的温度：撞击月球的小撞击物的质量和尺寸分布
Temperatures of lunar impact flashes: mass and size distribution of small impactors hitting the Moon
摘要：
过去20年来一直在监测月球撞击闪光，以确定厘米至分米大小的近地天体的质量频率分布。在这项工作中，使用望远镜观测的R和I波段的NELIOTA数据库，冲击闪光温度的推导。发现它们的范围在大约1，300和5，800 K之间。此外，还发现，温度值似乎具有比高斯函数明显更宽的分布，因此难以通过分配平均温度来估计撞击闪光光能量。通过测量闪光温度并假设黑体发射，我们在这里推导出撞击的能量。我们还研究了每个事件的潜在联系，以个人流星体流，这使我们能够分配一个冲击速度，从而约束弹丸质量。撞击物的质量在几克到几百克之间，而它们的大小只有几厘米，其大小频率分布与其他研究相似。
英文摘要：
Lunar impact flashes have been monitored over the last 20 years for determining the mass frequency distribution of near-Earth objects in the cm-dm size range. In this work, using telescopic observations in R and I band from the NELIOTA database, impact flash temperatures are derived. They are found to range between approximately 1,300 and 5,800 K. In addition, it is also found that temperature values appear to have a distribution significantly broader than a Gaussian function, therefore making it difficult to estimate the impact flash luminous energy by assigning an average temperature. By measuring the flash temperatures and assuming a black body emission, here we derive the energy of the impacts. We also study the potential link of each event to individual meteoroid streams, which allows us to assign an impact velocity and therefore constrain the projectile mass. Impactor masses are found to range between a few to hundreds of grams, while their sizes are just of few centimetres following a size frequency distribution similar to other studies.
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