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This work deals with the study of an erupting prominence embedded in the core of a CME and focuses on the derivation of the prominence plasma filling factor. We explore two methods to measure the prominence plasma filling factor that are…

太阳与恒星天体物理 · 物理学 2018-09-19 R. Susino , A. Bemporad , S. Jejčič , P. Heinzel

To understand the formation mechanism of large plumes in solar prominences, we investigate the formation process of two such phenomena. We studied the dynamic and thermal properties of two large plumes using observations from New Vacuum…

太阳与恒星天体物理 · 物理学 2022-03-14 Jincheng Wang , Xiaoli Yan , Zhike Xue , Liheng Yang , Qiaoling Li , Hechao Chen , Chun Xia , Zhong Liu

Solar flares are known to be prolific electron accelerators, yet identifying the mechanism(s) for such efficient electron acceleration in solar flare (and similar astrophysical settings) presents a major challenge. This is due in part to a…

太阳与恒星天体物理 · 物理学 2023-04-18 Eduard P. Kontar , A. Gordon Emslie , Galina G. Motorina , Brian R. Dennis

In the standard model, magnetic reconnection at a vertical current sheet above the flare arcade is key to explaining many aspects of solar eruptions. The supra-arcade region is where the vertical current sheet is supposedly located, and…

太阳与恒星天体物理 · 物理学 2025-12-23 Hanya Pan , Astrid M. Veronig , Rui Liu

Solar eruptions are the most spectacular events in our solar system and are associated with many different signatures of energy release including solar flares, coronal mass ejections, global waves, radio emission and accelerated particles.…

太阳与恒星天体物理 · 物理学 2017-12-20 David M. Long , Pearse Murphy , Georgina Graham , Eoin P. Carley , David Pérez-Suárez

This chapter discusses the dynamical properties of eruptive prominences in relation to coronal mass ejections (CMEs). The fact that eruptive prominences are a part of CMEs is emphasized in terms of their physical association and kinematics.…

太阳与恒星天体物理 · 物理学 2015-06-22 Nat Gopalswamy

Observations of stellar prominences on young rapidly rotating stars provide unique probes of their magnetic fields out to many stellar radii. We compare two independently obtained datasets of the K3 dwarf Speedy Mic using the…

天体物理学 · 物理学 2009-11-11 N. J. Dunstone , A. Collier Cameron , J. R. Barnes , M. Jardine

We present numerical simulations in 2.5D settings where large scale prominences form in situ out of coronal condensation in magnetic dips, in close agreement with early as well as recent reporting of `funnel prominences'. Our simulation…

太阳与恒星天体物理 · 物理学 2015-06-19 Rony Keppens , Chun Xia

We present a new model for the coronal structure of rapidly rotating solar-type stars. The presence of prominences trapped in co-rotation 2 to 5 stellar radii above the stellar surface has been taken as evidence that the coronae of these…

天体物理学 · 物理学 2009-11-11 M. Jardine , A. A. van Ballegooijen

This paper reviews the current state of our understanding of high-speed solar wind acceleration in coronal holes. Observations by SOHO, coupled with interplanetary particle measurements going back several decades, have put strong…

天体物理学 · 物理学 2007-05-23 Steven R. Cranmer

Context. In previous work, we studied a prominence which appeared like a tornado in a movie made from 193 {\AA} filtergrams obtained with the Atmospheric Imaging Assembly (AIA) imager aboard the Solar Dynamics Observatory (SDO). The…

太阳与恒星天体物理 · 物理学 2019-03-27 M. Zapiór , B. Schmieder , P. Mein , N. Mein , N. Labrosse , M. Luna

The photometry of eclipse white-light (W-L) images showing a moving blob is interpreted for the first time together with observations from space with the PRoject for On Board Autonomy (PROBA-2) mission (ESA). An off-limb event seen with…

太阳与恒星天体物理 · 物理学 2018-03-14 E. Tavabi , S. Koutchmy , C. Bazin

In this paper, we carry out multiwavelength observations of three recurring jets on 2014 November 7. The jets originated from the same region at the edge of AR 12205 and propagated along the same coronal loop. The eruptions were generated…

太阳与恒星天体物理 · 物理学 2021-12-08 Yan-Jie Zhang , Qing-Min Zhang , Jun Dai , Zhe Xu , Hai-Sheng Ji

Recurrent, arc-shaped intensity disturbances were detected by EUV channels in an active region. The fronts were observed to propagate along a coronal loop bundle rooted in a small area within a sunspot umbra. Previous works have linked…

太阳与恒星天体物理 · 物理学 2022-11-02 M. V. Sieyra , S. Krishna Prasad , G. Stenborg , E. Khomenko , T. Van Doorsselaere , A. Costa , A. Esquivel , J. M. Riedl

This paper presents a study of a large sample of global disturbances in the solar corona with characteristic propagating fronts as intensity enhancement, similar to the phenomena that have often been referred to as EIT waves or EUV waves.…

太阳与恒星天体物理 · 物理学 2015-06-16 Nariaki V. Nitta , Carolus J. Schrijver , Alan M. Title , Wei Liu

On February 12, 2021 two subsequent eruptions occurred above the West limb, as seen along the Sun-Earth line. The first event was a typical slow Coronal Mass Ejection (CME), followed $\sim 7$ hours later by a smaller and collimated…

Magnetic reconnection is a proposed mechanism for nanojets associated with coronal heating. We investigate the characteristics of reconnection-driven nanojets just before and during a prominence eruption using the High Resolution Imager…

太阳与恒星天体物理 · 物理学 2025-10-30 Tarhik Wallace , Patrick Antolin

The acceleration of charged particles is relevant to the solar corona over a broad range of scales and energies. High-energy particles are usually detected in concomitance with large energy release events like solar eruptions and flares,…

太阳与恒星天体物理 · 物理学 2014-02-27 S. Dalena , A. F. Rappazzo , P. Dmitruk , A. Greco , W. H. Matthaeus

Observations of solar prominences reveal a complex, dynamic flow field within them. The flow field within quiescent prominences is characterized by long ``threads'' and dark ``bubbles'' that fall and rise (respectively) in a thin sheet. The…

太阳与恒星天体物理 · 物理学 2012-01-23 Neal Hurlburt , Thomas Berger

Sixty years ago the first observation was published showing solar energetic particles (SEPs) with a sampling of chemical elements. Thus began study of the direct products of dynamic physics in the solar corona. As we have progressed from…

太阳与恒星天体物理 · 物理学 2021-08-19 Donald V. Reames