A Comprehensive Model of the Meteoroid Environment around Mercury
A Comprehensive Model of the Meteoroid Environment around Mercury
复制标题
水星周围流星体环境的综合模型
DOI：
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发表时间：
2018
影响因子：
4.9
通讯作者：
D. Janches
中科院分区：
文献类型：
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作者：
P. Pokorný;M. Sarantos;D. Janches
为了描述水星周围的流星体环境及其对水星外逸层的贡献，我们结合了太阳系中四种不同的流星体来源：主带小行星、彗星家族彗星、哈雷型彗星和奥尔特云彗星。所有流星体群都由现有的动力学模型描述。我们使用了最近校准的流星体流入地球作为一个约束条件的组合人口模型对水星。我们预测水星上所有四个流星体群的轨道要素、撞击速度和到达方向的分布有很大不同。我们表明，水星的流星体环境的最有可能的模型，在与地球的协议的意义上，提供了很好的协议与以前报道的观测水星的外逸层的信使号航天器，并不高度敏感的变化不确定的参数，如这些人口在地球上的比例，大小频率分布，和碰撞寿命的流星体。最后，我们提供了一个完全校准的模型，包括高分辨率的地图质量流入和表面蒸发率为不同值的水星的真实异常角。
To characterize the meteoroid environment around Mercury and its contribution to the planet’s exosphere, we combined four distinctive sources of meteoroids in the solar system: main-belt asteroids, Jupiter-family comets, Halley-type comets, and Oort Cloud comets. All meteoroid populations are described by currently available dynamical models. We used a recent calibration of the meteoroid influx onto Earth as a constraint for the combined population model on Mercury. We predict vastly different distributions of orbital elements, impact velocities, and directions of arrival for all four meteoroid populations at Mercury. We demonstrate that the most likely model of Mercury’s meteoroid environment—in the sense of agreement with Earth—provides good agreement with previously reported observations of Mercury’s exosphere by the MESSENGER spacecraft and is not highly sensitive to variations of uncertain parameters such as the ratio of these populations at Earth, the size–frequency distribution, and the collisional lifetime of meteoroids. Finally, we provide a fully calibrated model consisting of high-resolution maps of mass influx and surface vaporization rates for different values of Mercury’s true anomaly angle.
影响因子：
5.2
作者：
D. Janches;L. Dyrud;S. Broadley;J. Plane
通讯作者：
D. Janches;L. Dyrud;S. Broadley;J. Plane
流星烧蚀的化学模型
影响因子：
6.3
作者：
Vondrak T
通讯作者：
Vondrak T