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相关论文: Dynamics of the Transition corona

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We apply the slip-back mapping method of Titov et al. 2009 and Lionello et al. 2020 to a thermodynamic MHD simulation to track topological changes in the magnetic field at a range of temporal cadences. The method constitutes the logical…

太阳与恒星天体物理 · 物理学 2026-04-24 Emily I. Mason , Cooper Downs , Roberto Lionello , Jon A. Linker , Viacheslav Titov

The physical connection between thermal convection in the solar interior and the solar wind remains unclear due to their significant scale separation. Using an extended version of the three-dimensional radiative magnetohydrodynamic code…

太阳与恒星天体物理 · 物理学 2023-07-21 H. Iijima , T. Matsumoto , H. Hotta , S. Imada

A critical aspect of solar activity is the coupling between eruptions and the surrounding coronal magnetic field, which determines the trajectory and morphology of the eruptive event. Pseudostreamers (PSs) are coronal magnetic structures…

太阳与恒星天体物理 · 物理学 2022-06-29 A. Sahade , M. Cécere , M. V. Sieyra , G. Krause , H. Cremades , A. Costa

Solar UV bursts are small-scale features that exhibit intermittent brightenings that are thought to be due to magnetic reconnection. They are observed abundantly in the chromosphere and transition region, in particular in active regions. We…

太阳与恒星天体物理 · 物理学 2017-09-13 L. P. Chitta , H. Peter , P. R. Young , Y. -M. Huang

Three-dimensional magnetic null points are ubiquitous in the solar corona, and in any generic mixed-polarity magnetic field. We consider magnetic reconnection at an isolated coronal null point, whose fan field lines form a dome structure.…

太阳与恒星天体物理 · 物理学 2013-08-29 D. I. Pontin , E. R. Priest , K. Galsgaard

Employing Solar Dynamics Observatory (SDO)/Atmospheric Imaging Assembly (AIA) multi-wavelength images, we report the coronal condensation during the magnetic reconnection (MR) between a system of open and closed coronal loops. Higher-lying…

太阳与恒星天体物理 · 物理学 2018-09-05 Leping Li , Jun Zhang , Hardi Peter , Lakshmi Pradeep Chitta , Jiangtao Su , Chun Xia , Hongqiang Song , Yijun Hou

Magnetic field embedded in a perfectly conducting fluid preserves its topology for all time. Although ionized astrophysical objects, like stars and galactic disks, are almost perfectly conducting, they show indications of changes in…

星系天体物理 · 物理学 2010-03-16 A. Lazarian , G. Kowal , E. Vishniac , K. Kulpa-Dubel , K. Otmianowska-Mazur

The structure of magnetic flux ropes injected into the solar wind during reconnection in the coronal atmosphere is explored with particle-in-cell simulations and compared with in situ measurements of magnetic "switchbacks" from the Parker…

We present a new model to explain how particles (solar energetic particles; SEPs), accelerated at a reconnection site that is not magnetically connected to the Earth, could eventually propagate along the well-connected open flux tube. Our…

太阳与恒星天体物理 · 物理学 2015-05-30 S. Masson , G. Aulanier , E. Pariat , K. -L. Klein

The outer solar atmosphere, i.e., the corona and the chromosphere, is replete with small energy-release events, which are accompanied by transient brightening and jet-like ejections. These events are considered to be magnetic reconnection…

太阳与恒星天体物理 · 物理学 2015-10-28 T. Shimizu

Mutual conversion of various kinds of magnetohydrodynamic (MHD) waves can have profound impacts on wave propagation, energy transfer, and heating of the solar chromosphere and corona. Mode conversion occurs when an MHD wave travels through…

太阳与恒星天体物理 · 物理学 2024-04-01 Pankaj Kumar , Valery M. Nakariakov , Judith T. Karpen , Kyung-Suk Cho

Magnetic reconnection is believed to be the primary mechanism by which non-potential energy stored in coronal magnetic fields is rapidly released during solar eruptive events. Unfortunately, owing to the small spatial scales on which…

太阳与恒星天体物理 · 物理学 2018-09-12 Aidan M. O'Flannagain , Shane A. Maloney , Peter T. Gallagher , Philippa Browning , Jose Refojo

The motion of faint propagating disturbances (PD) in the solar corona reveals an intricate structure which must be defined by the magnetic field. Applied to quiet Sun observations by the Atmospheric Imaging Assembly (AIA)/Solar Dynamics…

太阳与恒星天体物理 · 物理学 2022-07-20 Huw Morgan , Marianna Korsos

We present high-resolution observations of a magnetic reconnection event in the solar atmosphere taken with the New Vacuum Solar Telescope, AIA and HMI. The reconnection event occurred between the threads of a twisted arch filament system…

太阳与恒星天体物理 · 物理学 2018-02-14 Zhenghua Huang , Chaozhou Mou , Hui Fu , Linhua Deng , Bo Li , Lidong Xia

Magnetic reconnection is a key mechanism involved in solar eruptions and is also a prime possibility to heat the low corona to millions of degrees. Here, we present ultra-high-resolution extreme ultraviolet observations of persistent…

Reconnection between pairs of solar magnetic flux elements, one open and the other a closed loop, is theorised to be a crucial process for both maintaining the structure of the corona and producing the solar wind. This 'interchange…

太阳与恒星天体物理 · 物理学 2020-09-04 Allan R Macneil , Mathew J Owens , Laura Berčič , Adam J Finley

Magnetic field line reconnection is a universal plasma process responsible for the magnetic field topology change and magnetic field energy dissipation into charged particle heating and acceleration. In many systems, the conditions leading…

Disconnection of open magnetic flux by reconnection is required to balance the injection of open flux by CMEs and other eruptive events. Making use of recent advances in heliospheric background subtraction, we have imaged many abrupt…

太阳与恒星天体物理 · 物理学 2015-06-03 C. E. DeForest , T. A. Howard , D. J. McComas

Magnetic reconnection in the quiet Sun is a phenomenon that is consistently observed, and it has recently become feasible to simulate via 3D numerical models of realistically stratified and convection-driven reconnection. We aim to…

太阳与恒星天体物理 · 物理学 2022-12-21 Rebecca Robinson , Mats Carlsson , Guillaume Aulanier

Much of coronal hole (CH) research is focused upon determining the boundary and calculating the open flux as accurately as possible. However, the observed boundary itself is worthy of investigation, and holds important clues to the physics…

太阳与恒星天体物理 · 物理学 2022-10-05 Emily I. Mason , Vadim M. Uritsky