Reconstructing the 3-D Trajectories of CMEs in the Inner Heliosphere
Reconstructing the 3-D Trajectories of CMEs in the Inner Heliosphere
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DOI：
10.1007/s11207-009-9364-3
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发表时间：
2009-04
期刊：
影响因子：
2.8
通讯作者：
S. Maloney;Peter T. Gallagher;R. McAteer
中科院分区：
文献类型：
--
作者：
S. Maloney;Peter T. Gallagher;R. McAteer
本文介绍了一种利用日地关系观测站（STEREO）观测数据对日冕物质抛射（CME）轨迹进行全三维重建的方法。分析了由Ahead和Behind STEREO卫星的内日冕仪和外日冕仪（COR 1和2）同时观测到的四个日冕物质抛射。这些观测结果被用来推导出CME的三维轨迹，直到1500 R。使用COR 1/2数据的重建支持径向传播模型。假设在距太阳很远的距离（15 - 240 R）上进行伪径向传播，CME的位置被外推到日光层成像仪（HI）的视场中。我们估计了不同视场中的日冕物质抛射速度。发现慢于太阳风的CME被加速，而快于太阳风的CME被减速，两者都倾向于太阳风速度。
A method for the full three-dimensional (3-D) reconstruction of the trajectories of coronal mass ejections (CMEs) usingSolar TErrestrial RElations Observatory(STEREO) data is presented. Four CMEs that were simultaneously observed by the inner and outer coronagraphs (COR1 and 2) of the Ahead and Behind STEREO satellites were analysed. These observations were used to derive CME trajectories in 3-D out to ∼ 15R⊙. The reconstructions using COR1/2 data support a radial propagation model. Assuming pseudo-radial propagation at large distances from the Sun (15 – 240R⊙), the CME positions were extrapolated into the Heliospheric Imager (HI) field-of-view. We estimated the CME velocities in the different fields-of-view. It was found that CMEs slower than the solar wind were accelerated, while CMEs faster than the solar wind were decelerated, with both tending to the solar wind velocity.