论文标题
2019年8月对木星的影响的破碎模型
Fragmentation modelling of the August 2019 impact on Jupiter
论文作者
论文摘要
2019年8月7日，在木星上观察到了持久的影响闪光灯。分析了此事件的视频以获得光曲线并确定能量释放和初始质量。我们发现，影响器的总能源为96-151美元的TNT $ kilotons，相当于最初的质量在$ 190-260 $吨之间，直径在4-10美元之间。我们开发了一个碎片模型，以模拟物体的大气破裂并重现灯光曲线。我们对三种不同的材料进行建模：彗星，石质和金属，速度为$ 60 $，$ 65 $和70美元/s/s/s $ km/s，以确定撞击物体的材料构成。较慢的箱子最适合强，金属物体，而较快的情况则需要较弱的材料。
On 7th August 2019, an impact flash lasting $\sim1$s was observed on Jupiter. The video of this event was analysed to obtain the lightcurve and determine the energy release and initial mass. We find that the impactor released a total energy of $96-151$ kilotons of TNT, corresponding to an initial mass between $190-260$ metric tonnes with a diameter between $4-10$m. We developed a fragmentation model to simulate the atmospheric breakup of the object and reproduce the lightcurve. We model three different materials: cometary, stony and metallic at speeds of $60$, $65 $ and $70$ km/s to determine the material makeup of the impacting object. The slower cases are best fit by a strong, metallic object while the faster cases require a weaker material.
