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Solar flares are transient yet dramatic events in the atmosphere of the Sun, during which a vast amount of magnetic energy is liberated. This energy is subsequently transported through the solar atmosphere or into the heliosphere, and…

太阳与恒星天体物理 · 物理学 2022-12-14 Graham S. Kerr

Understanding how energy is released in flares is one of the central problems of solar and stellar astrophysics. Observations of high temperature flare plasma hold many potential clues as to the nature of this energy release. It is clear,…

太阳与恒星天体物理 · 物理学 2020-05-27 Jeffrey W. Reep , Harry P. Warren , Christopher S. Moore , Crisel Suarez , Laura A. Hayes

Context. Multi-dimensional solar flare simulations have not yet included detailed analysis of the lower atmospheric responses such as down-flowing chromospheric compressions and chromospheric evaporation processes. Aims. We present an…

太阳与恒星天体物理 · 物理学 2024-02-02 Malcolm Druett , Wenzhi Ruan , Rony Keppens

During solar flares a tremendous amount of magnetic energy is released and transported through the Sun's atmosphere and out into the heliosphere. Despite over a century of study, many unresolved questions surrounding solar flares are still…

太阳与恒星天体物理 · 物理学 2022-12-14 Graham S. Kerr

Solar flares are energetic events taking place in the Sun's atmosphere, and their effects can greatly impact the environment of the surrounding planets. In particular, eruptive flares, as opposed to confined flares, launch coronal mass…

太阳与恒星天体物理 · 物理学 2016-01-20 Miho Janvier , Guillaume Aulanier , Pascal Demoulin

Solar flares are driven by release of the free magnetic energy and its conversion to other forms of energy -- kinetic, thermal, and nonthermal. Quantification of partitions between these energy components and their evolution is needed to…

太阳与恒星天体物理 · 物理学 2023-08-02 Gregory D. Fleishman , Gelu M. Nita , Galina G. Motorina

Understanding nonthermal particle generation, transport, and escape in solar flares requires detailed quantification of the particle evolution in the realistic 3D domain where the flare takes place. Rather surprisingly, apart of standard…

太阳与恒星天体物理 · 物理学 2018-05-23 Gregory D. Fleishman , Gelu M. Nita , Natsuha Kuroda , Sabina Jia , Kevin Tong , Richard R. Wen , Zhou Zhizhuo

The origin of the near-ultraviolet and optical continuum radiation in flares is critical for understanding particle acceleration and impulsive heating in stellar atmospheres. Radiative-hydrodynamic simulations in 1D have shown that high…

太阳与恒星天体物理 · 物理学 2018-01-10 Adam F. Kowalski , Joel C. Allred

Context: Solar flares are the result of the sudden release of magnetic energy in the corona. Much of this energy goes into accelerating charged particles to high velocity. These particles travel along the magnetic field and the energy is…

Without any doubt solar flaring loops possess a multi-thread internal structure that is poorly resolved and there are no means to observe heating episodes and thermodynamic evolution of the individual threads. These limitations cause…

太阳与恒星天体物理 · 物理学 2015-11-04 R. Falewicz , P. Rudawy , K. Murawski , A. K. Srivastava

The bulk of solar flare energy is deposited in the chromosphere. Flare ribbons and footpoints in the chromosphere therefore offer great diagnostic potential of flare energy release and transport processes. High quality observations from the…

太阳与恒星天体物理 · 物理学 2023-10-12 Graham S. Kerr , Adam F. Kowalski , Joel C. Allred , Adrian N. Daw , Melissa R. Kane

The coming years will see routine use of solar data of unprecedented spatial and spectral resolution, time cadence, and completeness in the wavelength domain. To capitalize on the soon to be available radio facilities such as the expanded…

太阳与恒星天体物理 · 物理学 2015-05-20 Gregory D. Fleishman , Gelu M. Nita , Dale E. Gary

We propose a method for diagnosing the physical conditions in the solar atmosphere using an increase in oscillation amplitudes resulting from minuscule solar flares. As an example, we consider a B2 flare, which caused a sharp short-lived…

太阳与恒星天体物理 · 物理学 2022-01-05 Andrei Chelpanov , Nikolai Kobanov

Numerical models of solar flares typically focus on the behaviour of directly-heated flare models, adopting magnetic field- aligned, plane-parallel methodologies. With high spatial- and spectral-resolution ground-based optical observations…

太阳与恒星天体物理 · 物理学 2022-09-21 Christopher M. J. Osborne , Lyndsay Fletcher

The coming decade will see the routine use of solar data of unprecedented spatial and spectral resolution, time cadence, and completeness. To capitalize on the new (or soon to be available) facilities such as SDO, ATST and FASR, and the…

While solar flares are primarily associated with enhanced ultraviolet and X-ray emission, a subset of flares exhibit significant continuum brightening in visible light and are classified as white-light flares (WLFs). Despite extensive…

太阳与恒星天体物理 · 物理学 2026-01-01 Samuel Granovsky , Alexander G. Kosovichev , Irina N. Kitiashvili , Alan A. Wray

Recent observations and simulations indicate that solar flares undergo extremely complex three-dimensional (3D) evolution, making 3D particle transport models essential for understanding electron acceleration and interpreting flare…

太阳与恒星天体物理 · 物理学 2025-08-19 Xiaocan Li , Chengcai Shen , Xiaoyan Xie , Fan Guo , Bin Chen , Ivan Oparin , Yuqian Wei , Sijie Yu , Jeongbhin Seo

The emphasis of observational and theoretical flare studies in the last decade or two has been on the flare corona, and attention has shifted substantially away from the flare's chromospheric aspects. However, although the pre-flare energy…

太阳与恒星天体物理 · 物理学 2010-01-06 Lyndsay Fletcher

Coronal flare emission is commonly observed to decay on timescales longer than those predicted by impulsively-driven, one-dimensional flare loop models. This discrepancy is most apparent during the gradual phase, where emission from these…

太阳与恒星天体物理 · 物理学 2023-03-01 William Ashfield , Dana Longcope

The contemporary multi-wavelength observations have revealed various important features during solar flares which, on one hand, support the two-dimensional (2D) "standard flare model" while, on other hand, also urge for the exploration of…

太阳与恒星天体物理 · 物理学 2024-09-17 Bhuwan Joshi , Prabir K. Mitra , Astrid M. Veronig , R. Bhattacharyya
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