Rotational effect as the possible cause of the east-west asymmetric crater rims on Ryugu observed by LIDAR data
Rotational effect as the possible cause of the east-west asymmetric crater rims on Ryugu observed by LIDAR data
复制标题
LIDAR数据观测到的龙宫火山口边缘东西向不对称的可能原因是旋转效应
DOI:
10.1016/j.icarus.2020.114073
复制
发表时间:
2021
期刊:
影响因子:
3.2
通讯作者:
Watanabe Sei-ichiro
中科院分区:
文献类型:
--
作者:
Hirata Naoyuki;Namiki Noriyuki;Yoshida Fumi;Matsumoto Koji;Noda Hirotomo;Senshu Hiroki;Mizuno Takahide;Terui Fuyuto;Ishihara Yoshiaki;Yamada Ryuhei;Yamamoto Keiko;Abe Shinsuke;Noguchi Rina;Hirata Naru;Tsuda Yuichi;Watanabe Sei-ichiro
Asteroid 162,173 Ryugu is a rubble-pile asteroid, whose top-shape is compatible with models of deformation by spin up. Rims of major craters on Ryugu have an east–west asymmetric profile; their western crater rims are sharp and tall, while their eastern crater rims are rounded and low. Although there are various possible explanations, we theoretically assess the effect of asteroid rotation as the possible reason for this east–west asymmetry. It is known that the trajectories and fates of ejecta are affected by the rotation. The Coriolis force and the inertial speed of the rotating surface are the factors altering the ejecta trajectories. Consequently, we found that the east–west asymmetric crater rims might be formed as a result of rotation, when the inertial speed of the rotating surface is nearly equal to the first cosmic velocity of the body. In other words, it is possible that the observed east–west asymmetric rims of the Urashima, Cendrillon, and Kolobok craters were formed when Ryugu's rotation period was ~3.6 h.
登录
查看更多内容
DOI:
10.1007/bf01228625
发表时间:
1975
期刊:
影响因子:
--
作者:
V. Shor
通讯作者:
V. Shor
影响因子:
3.2
作者:
J. Veverka;P. Helfenstein;P. Lee;P. Thomas;A. McEwen;M. Belton;K. Klaasen;T. Johnson;J. Granahan;F. Fanale;P. Geissler;J. Head
通讯作者:
J. Head
影响因子:
3.2
作者:
P. Thomas
通讯作者:
P. Thomas
DOI:
--
发表时间:
2019
期刊:
--
影响因子:
--
作者:
N. Namiki;T. Mizuno;H. Senshu;H. Noda;K. Matsumoto;N. Hirata;R. Yamada;Y. Ishihara;H. Ikeda;H. Araki;K. Yamamoto;S. Abe;F. Yoshida;A. Higuchi;S.;Sasaki;S. Oshigami;S. Tsuruta;K. Asari;S. Tazawa;M. Shizugami;H. Miyamoto;H. Demura;J. Kimura;T.;Otsubo;F. Terui;S. Watanabe;T. Saiki;S. Nakazawa;M. Yoshikawa;Y. Tsuda
通讯作者:
Y. Tsuda
DOI:
--
发表时间:
--
期刊:
影响因子:
--
作者:
通讯作者:
--