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Coronal waves exist ubiquitously in the solar atmosphere. They are important not only in their own rich physics but also essential candidates of triggering magnetic eruptions in the remote. However, the later mechanism has never been…

Solar and Stellar Astrophysics · Physics 2021-01-06 Guiping Zhou , Guannan Gao , Jingxiu Wang , Jun Lin , Yingna Su , Chunlan Jin , Yuzong Zhang

The nature of various plausible causal links between sympathetic events is still a controversial issue. In this work, we present multi-wavelength observations of sympathetic eruptions, associated flares and coronal mass ejections (CMEs)…

Solar and Stellar Astrophysics · Physics 2016-04-13 Navin Chandra Joshi , Brigitte Schmieder , Tetsuya Magara , Yang Guo , Guillaume Aulanier

Fast magnetic reconnection powers explosive events throughout the universe, from gamma-ray bursts to solar flares. Despite its importance, the onset of astrophysical fast reconnection is the subject of intense debate and remains an open…

Solar and Stellar Astrophysics · Physics 2020-02-07 L. P. Chitta , A. Lazarian

Previous studies have revealed that solar coronal jets triggered by the eruption of mini-filaments (MFs) conform to the famous magnetic-breakout mechanism. In such scenario, a breakout current sheet (BCS) and a flare current sheet (FCS)…

Solar and Stellar Astrophysics · Physics 2024-01-05 Liheng Yang , Xiaoli Yan , Zhike Xue , Zhe Xu , Qingmin Zhang , Yijun Hou , Jincheng Wang , Huadong Chen

Magnetic reconnection is commonly considered as a mechanism of solar (eruptive) flares. A deeper study of this scenario reveals, however, a number of open issues. Among them is the fundamental question, how the magnetic energy is…

Solar and Stellar Astrophysics · Physics 2015-03-17 Miroslav Bárta , Jörg Büchner , Marian Karlický , Jan Skála

Context: Many previous studies have shown that the magnetic precursor of a coronal mass ejection (CME) takes the form of a magnetic flux rope, and a subset of them have become known as `hot flux ropes' due to their emission signatures in…

Solar and Stellar Astrophysics · Physics 2021-01-04 Alexander W James , Lucie M Green , Lidia van Driel-Gesztelyi , Gherardo Valori

Two major processes have been proposed to convert the coronal magnetic energy into the kinetic energy of a coronal mass ejection (CME): resistive magnetic reconnection and ideal macroscopic magnetohydrodynamic instability of magnetic flux…

Solar and Stellar Astrophysics · Physics 2015-06-16 H. Q. Song , Y. Chen , D. D. Ye , G. Q. Han , G. H. Du , G. Li , J. Zhang , Q. Hu

Solar eruptions, known as Coronal Mass Ejections (CMEs), are frequently observed on our Sun. Recent Kepler observations of superflares on G-type stars have implied that so called super-CMEs, possessing kinetic energies 10 times of the most…

Solar and Stellar Astrophysics · Physics 2014-10-29 Vladimir S. Airapetian , Alex Glocer , William Danchi

In this multi-instrument paper, we search for evidence of sustained magnetic reconnection far beyond the impulsive phase of the X8.2-class solar flare on 2017 September 10. Using Hinode/EIS, CoMP, SDO/AIA, K-Cor, Hinode/XRT, RHESSI, and…

Solar and Stellar Astrophysics · Physics 2020-10-01 Ryan J. French , Sarah A. Matthews , Lidia van Driel-Gesztelyi , David M. Long , Philip G. Judge

It remains an open question how magnetic energy is rapidly released in the solar corona so as to create solar explosions such as solar flares and coronal mass ejections (CMEs). Recent studies have confirmed that a system consisting of a…

Astrophysics · Physics 2009-06-23 Y. Chen , Y. Q. Hu , L. D. Xia

Magnetic reconnection is a fundamental physical process that can drive rapid conversion of magnetic energy into plasma bulk flows, thermal heating, and particle acceleration in space and astrophysical plasmas. Classical reconnection theory…

Fast-mode magnetohydrodynamic (MHD) waves in the solar corona are often known to be produced by solar flares and eruptive prominences. We here simulate the effect of the interaction of an external perturbation on a magnetic null in the…

Solar and Stellar Astrophysics · Physics 2024-11-05 Sripan Mondal , A. K. Srivastava , David I. Pontin , Eric R. Priest , R. Kwon , Ding Yuan

Magnetic reconnection is believed to be the prime mechanism to trigger solar flares and accelerate electrons up to energies of MeV. In the classical two-dimensional reconnection model, the separation motion of chromospheric ribbons…

Solar and Stellar Astrophysics · Physics 2011-02-11 Chang Liu , Haimin Wang

We present a detailed multi-wavelength analysis and interpretation of the evolution of an M7.6 flare on October 24, 2003. The X-ray observations of the flare taken from the RHESSI spacecraft reveal two phases of the flare evolution. The…

Space solar missions such as {\it Yohkoh} and {\it RHESSI} observe the hard X- and gamma-ray emission from energetic electrons in impulsive solar flares. Their energization mechanism, however, is unknown. In this paper, we suggest that the…

Astrophysics · Physics 2009-11-10 S. Tanuma , K. Shibata

We study the evolution of the magnetic field in a Y-type current sheet subject to a brief, localized magnetic reconnection event. The reconnection produces up- and down-flowing reconnected flux tubes which rapidly decelerate when they hit…

Astrophysics · Physics 2015-05-13 M. G. Linton , C. R. DeVore , D. W. Longcope

Solar flares are an abrupt release of magnetic energy in the Sun's atmosphere due to reconnection of the coronal magnetic field. This occurs in response to turbulent flows at the photosphere which twist the coronal field. Similar to…

Solar and Stellar Astrophysics · Physics 2018-06-06 Nastaran Farhang , Hossein Safari , Michael S. Wheatland

We analyze and model an M8.0 flare on 2005 May 13 observed by TRACE and RHESSI to determine the energy release rate from magnetic reconnection that forms and heats numerous flare loops. The flare exhibits two ribbons in UV 1600 {\AA}…

Solar and Stellar Astrophysics · Physics 2014-06-25 Wen-Juan Liu , Jiong Qiu , Dana W. Longcope , Amir Caspi

Magnetic reconnection is a fundamental physical process in many laboratory, space, and astrophysical plasma contexts. Solar flares serve as an outstanding laboratory to study the magnetic reconnection and the associated energy release and…

Context. The recent discovery of much greater magnetic flux cancellation taking place at the photosphere than previously realised has led us in our previous works to suggest magnetic reconnection driven by flux cancellation as the cause of…

Solar and Stellar Astrophysics · Physics 2021-03-03 E. R. Priest , P. Syntelis
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