太阳日冕中磁开关结构的观测
太阳与恒星天体物理
2022-09-21 v2
摘要
开关结构（switchbacks）是太阳风磁场的突然、大幅径向偏转，由 Parker Solar Probe 在行星际空间中广泛揭示。尽管候选机制包括 Alfvén 湍流、剪切驱动的 Kelvin-Helmholtz 不稳定性、交换重联以及与 Parker 螺旋相关的几何效应，开关结构的形成机制与源区仍悬而未决。本快报报道了 Solar Orbiter 上 Metis 日冕仪对单个大型传播 S 形涡旋的观测，该涡旋被解释为日冕中开关结构的首个证据。它起源于一个活动区上方，相关环系以东、西两侧开放磁场区为界。观测、建模与理论为开关结构起源于交换重联提供了有力论据。Metis 测量表明，开关结构的起始也可能作为慢太阳风起源的指示。
引用
@article{arxiv.2206.03090,
title = {Observation of Magnetic Switchback in the Solar Corona},
author = {Daniele Telloni and Gary P. Zank and Marco Stangalini and Cooper Downs and Haoming Liang and Masaru Nakanotani and Vincenzo Andretta and Ester Antonucci and Luca Sorriso-Valvo and Laxman Adhikari and Lingling Zhao and Raffaele Marino and Roberto Susino and Catia Grimani and Michele Fabi and Raffaella D'Amicis and Denise Perrone and Roberto Bruno and Francesco Carbone and Salvatore Mancuso and Marco Romoli and Vania Da Deppo and Silvano Fineschi and Petr Heinzel and John D. Moses and Giampiero Naletto and Gianalfredo Nicolini and Daniele Spadaro and Luca Teriaca and Federica Frassati and Giovanna Jerse and Federico Landini and Maurizio Pancrazzi and Giuliana Russano and Clementina Sasso and David Berghmans and Frédéric Auchère and Regina Aznar Cuadrado and Lakshmi P. Chitta and Louise Harra and Emil Kraaikamp and David M. Long and Sudip Mandal and Susanna Parenti and Gabriel Pelouze and Hardi Peter and Luciano Rodriguez and Udo Schühle and Conrad Schwanitz and Phil J. Smith and Cis Verbeeck and Andrei N. Zhukov},
journal= {arXiv preprint arXiv:2206.03090},
year = {2022}
}