Study of two interacting interplanetary coronal mass ejections encountered by Solar Orbiter during its first perihelion passage: Observations and modeling
Study of two interacting interplanetary coronal mass ejections encountered by Solar Orbiter during its first perihelion passage: Observations and modeling
复制标题
太阳轨道飞行器第一次经过近日点期间遇到的两次相互作用的行星际日冕物质抛射的研究：观测和建模
DOI：
10.1051/0004-6361/202140648
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发表时间：
2021
影响因子：
6.5
通讯作者：
Khotyaintsev, Y.
中科院分区：
文献类型：
--
作者：
Telloni, D.;Scolini, C.;Möstl, C.;Zank, G. P.;Zhao, L.-L.;Weiss, A. J.;Reiss, M. A.;Laker, R.;Perrone, D.;Khotyaintsev, Y.
ContextSolar Orbiter是致力于太阳和日光层探索的新一代使命，于2020年2月10日04：03 UTC从卡纳维拉尔角成功发射。在2020年6月第一次通过近日点期间，两次连续的行星际日冕物质抛射（ICME），沿着日光层电流片（HCS）沿着传播，撞击了航天器。目的是提供一个完整的描述这些事件，他们的相互作用，以及他们与周围的太阳风和HCS.MethodsData的MAG磁强计，高能粒子探测器套件，以及无线电和等离子体波仪器获得的信息被用来提供ICME的磁拓扑结构配置，他们的磁连接到太阳，以及对它们所处的日光层等离子体环境的深入了解。在建模方面，日光层逆风外推模型、三维日冕绳弹射技术和欧洲太阳能协会日光层预报信息资产（EUHFORIA）工具用于补充太阳轨道器对环境太阳风和ICME的观测，并模拟内日球层中喷出物的演变和相互作用，结果数据分析和数值模拟都表明，两个不同的，动态和磁相互作用的通道，（通过磁重联过程）太阳轨道器上的ICME是一种可能的情况，EUHFORIA时间序列在太阳轨道器和太阳轨道器数据之间的许多相似性支持。（连同日冕和内日光层的遥感观测）将大大加深对日冕物质抛射-日冕物质抛射相互作用期间发生的物理过程的理解。
ContextSolar Orbiter, the new-generation mission dedicated to solar and heliospheric exploration, was successfully launched on February 10, 2020, 04:03 UTC from Cape Canaveral. During its first perihelion passage in June 2020, two successive interplanetary coronal mass ejections (ICMEs), propagating along the heliospheric current sheet (HCS), impacted the spacecraft.AimsThis paper addresses the investigation of the ICMEs encountered by Solar Orbiter on June 7−8, 2020, from both an observational and a modeling perspective. The aim is to provide a full description of those events, their mutual interaction, and their coupling with the ambient solar wind and the HCS.MethodsData acquired by the MAG magnetometer, the Energetic Particle Detector suite, and the Radio and Plasma Waves instrument are used to provide information on the ICMEs’ magnetic topology configuration, their magnetic connectivity to the Sun, and insights into the heliospheric plasma environment where they travel, respectively. On the modeling side, the Heliospheric Upwind eXtrapolation model, the 3D COronal Rope Ejection technique, and the EUropean Heliospheric FORecasting Information Asset (EUHFORIA) tool are used to complement Solar Orbiter observations of the ambient solar wind and ICMEs, and to simulate the evolution and interaction of the ejecta in the inner heliosphere, respectively.ResultsBoth data analysis and numerical simulations indicate that the passage of two distinct, dynamically and magnetically interacting (via magnetic reconnection processes) ICMEs at Solar Orbiter is a possible scenario, supported by the numerous similarities between EUHFORIA time series at Solar Orbiter and Solar Orbiter data.ConclusionsThe combination of in situ measurements and numerical simulations (together with remote sensing observations of the corona and inner heliosphere) will significantly lead to a deeper understanding of the physical processes occurring during the CME-CME interaction.