论文标题
对Cneos 2014-01-08的组成和初始速度的新约束
New Constraints on the Composition and Initial Speed of CNEOS 2014-01-08
论文作者
论文摘要
我们研究了第一届星际流星木炭2014-01-08的火球新发布的光曲线。测得的速度和三个观察到的耀斑降至$ 18.7 \ mathrm {\; km} $表示流星分解时，环境公羊压力在113-194美元的范围内。所需的产量强度为$ \ gtrsim 20 $ 20 $倍，比石陨石高2美元，比铁陨石大2美元。大气中隐含的放缓表明，初始速度约为66.5美元\; {\ rm km〜s^{ - 1}} $，加强了该流星的星际起源的情况，并使之相对于本地恒星的速度分散而变得更加离群。
We study the newly released light curve from the fireball of the first interstellar meteor CNEOS 2014-01-08. The measured velocity and three observed flares down to an altitude of $18.7 \mathrm{\; km}$ imply ambient ram pressure in the range of $113-194$ MPa when the meteor disintegrated. The required yield strength is $\gtrsim 20$ times higher than stony meteorites and $\gtrsim 2$ times larger than iron meteorites. The implied slowdown in the atmosphere suggests an initial speed of about $66.5 \; {\rm km~s^{-1}}$, strengthening the case for an interstellar origin of this meteor and making it an outlier relative to the velocity dispersion of local stars.
