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Evidence is beginning to be put forward that demonstrates the role of the chromosphere in supplying energy and mass to the corona. We aim to assess the role of chromospheric jets in active region dynamics. Using a combination of the…

Solar and Stellar Astrophysics · Physics 2015-06-05 R. J. Morton

The fine magnetic structure is vitally important to understanding the formation, stabilization and eruption of solar filaments, but so far, it is still an open question yet to be resolved. Using stereoscopic observations taken by the Solar…

Solar and Stellar Astrophysics · Physics 2022-07-20 Song Tan , Yuandeng Shen , Xinping Zhou , Yadan Duan , Zehao Tang , Chengrui Zhou , Surui Yao

Jets are one of the most common eruptive events in the solar atmosphere, and they are believed to be important in the context of coronal heating and solar wind acceleration. We present an observational study on a sequence of jets with the…

Solar and Stellar Astrophysics · Physics 2022-09-07 Hengyuan Wei , Zhenghua Huang , Hui Fu , Ming Xiong , Lidong Xia , Chao Zhang , Kaiwen Deng , Haiyi Li

We report a solar jet phenomenon associated with successive flares on November 10th 2014. These explosive events were involved with the satellite spots' emergence around a delta-type sunspot in the decaying active region NOAA 12205. The…

Solar and Stellar Astrophysics · Physics 2017-10-11 Takahito Sakaue , Akiko Tei , Ayumi Asai , Satoru Ueno , Kiyoshi Ichimoto , Kazunari Shibata

Partial filament eruptions have often been observed, however, the physical mechanisms that lead to filament splitting are not yet fully understood. In this study, we present a unique event of a partial filament eruption that undergoes two…

Solar and Stellar Astrophysics · Physics 2023-07-14 Zheng Sun , Ting Li , Hui Tian , Yinjun Hou , Zhenyong Hou , Hechao Chen , Xianyong Bai , Yuanyong Deng

Recent high-resolution solar observations have unveiled the presence of small-scale loop-like structures in the lower solar atmosphere, often referred to as unresolved fine structures, low-lying loops, and miniature hot loops. These…

Solar and Stellar Astrophysics · Physics 2025-03-14 Annu Bura , Tanmoy Samanta , Alphonse Sterling , Yajie Chen , Jayant Joshi , Vasyl Yurchyshyn , Ronald L. Moore

Coronal jets are transient, collimated eruptions that occur in regions of predominantly open magnetic field in the solar corona. Our understanding of these events has greatly evolved in recent years but several open questions, such as the…

Solar and Stellar Astrophysics · Physics 2015-12-01 T. Torok , R. Lionello , V. S. Titov , J. E. Leake , Z. Mikic , J. A. Linker , M. G. Linton

We study the relationship between implosive motions in a solar flare, and the energy redistribution in the form of oscillatory structures and particle acceleration. The flare SOL2012-03-09T03:53 (M6.4) shows clear evidence for an…

Solar and Stellar Astrophysics · Physics 2015-06-17 P. J. A. Simões , L. Fletcher , H. S. Hudson , A. J. B. Russell

Coronal jets are collimated plasma eruptions which are ubiquitous in the solar atmosphere. Believed to be triggered by magnetic reconnection, these jets can contribute to various phenomena, including coronal heating and particle…

Solar and Stellar Astrophysics · Physics 2026-02-03 Yogesh Kumar Maurya , Ramit Bhattacharyya , Peter Wyper

Recent studies have revealed that solar jets involving minifilament eruptions may be initiated under the well-known magnetic-breakout mechanism. Before or just at the onset of those jets, there should be a current sheet, where breakout…

Solar and Stellar Astrophysics · Physics 2019-04-10 Junchao Hong , Jiayan Yang , Huadong Chen , Yi Bi , Bo Yang , Hechao Chen

In the standard 2D model of eruption, the eruption of a magnetic flux rope is associated with magnetic reconnection occurring beneath it. However, in 3D, additional reconnection geometries are possible, in particular the AR-RF, where…

Solar and Stellar Astrophysics · Physics 2025-06-25 Reetika Joshi , Jaroslav Dudík , Brigitte Schmieder , Guillaume Aulanier , Ramesh Chandra

Large-amplitude oscillations (LAOs) are often detected in filaments. Using multiwavelength observations, their origin can be traced back to the interaction with eruptions and jets. We present two different case studies as observational…

Solar and Stellar Astrophysics · Physics 2023-03-29 Reetika Joshi , Manuel Luna , Brigitte Schmieder , Fernando Moreno-Insertis , Ramesh Chandra

Filament eruptions and hard X-ray (HXR) source motions are commonly observed in solar flares, which provides critical information on the coronal magnetic reconnection. This Letter reports an event on 2005 January 15, in which we found an…

Solar and Stellar Astrophysics · Physics 2015-05-19 Chang Liu , Jeongwoo Lee , Ju Jing , Rui Liu , Na Deng , Haimin Wang

Double coronal hard X-ray (HXR) sources are believed to be critical observational evidence of bi-directional energy release through magnetic reconnection in a large-scale current sheet in solar ares. Here we present a study on double…

Solar and Stellar Astrophysics · Physics 2017-07-05 Yao Chen , Zhao Wu , Wei Liu , Richard A. Schwartz , Di Zhao , Bing Wang , Guohui Du

Velocity structures of jets in a coronal hole have been derived for the first time. Hinode observations revealed the existence of many bright points in coronal holes. They are loop-shaped and sometimes associated with coronal jets. Spectra…

On 2010 August 1, a global solar event was launched involving almost the entire Earth-facing side of the Sun. This event mainly consisted of a C3.2 flare, a polar crown filament eruption and two Earth-directed coronal mass ejections (CMEs).…

Solar and Stellar Astrophysics · Physics 2015-05-28 Ting Li , Jun Zhang , Yuzong Zhang , Shuhong Yang

In the implosion conjecture, coronal loops contract as the result of magnetic energy release in solar eruptions and flares. However, after almost two decades, observations of this phenomenon are still rare, and most of previous reports are…

Solar and Stellar Astrophysics · Physics 2018-06-06 Juntao Wang , P. J. A. Simoes , L. Fletcher

Highly twisted magnetic flux ropes, with finite length, are subject to kink instabilities, and could lead to a number of eruptive phenomena in the solar atmosphere, including flares, coronal mass ejections (CMEs) and coronal jets. The kink…

Solar and Stellar Astrophysics · Physics 2019-05-24 Jiajia Liu , Yuming Wang , Robertus Erdélyi

As one of the most common features in the solar atmosphere, filaments are significant not only in the solar physics but also in the stellar and laboratory plasma physics. With the New Vacuum Solar Telescope and the Solar Dynamics…

Solar and Stellar Astrophysics · Physics 2020-07-27 Hengyuan Wei , Zhenghua Huang , Zhenyong Hou , Youqian Qi , Hui Fu , Bo Li , Lidong Xia

Using multi-wavelength observation from SDO and STEREO, we investigated the mechanism of two successive eruptions (F1 & F2) of a filament in active region NOAA 11444 on 27 march, 2012. The filament was inverse `J' shaped and lying along a…

Solar and Stellar Astrophysics · Physics 2017-10-11 Sajal Kumar Dhara , Ravindra B. , Pankaj Kumar , Ravinder Kumar Banyal , Shibu K. Mathew , Bhuwan Joshi