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Neutrinos generated during solar flares remain elusive. However, after $50$ years of discussion and search, the potential knowledge unleashed by their discovery keeps the search crucial. Neutrinos associated with solar flares provide…

太阳与恒星天体物理 · 物理学 2020-10-12 K. Okamoto , Y. Nakano , S. Masuda , Y. Itow , M. Miyake , T. Terasawa , S. Ito , M. Nakahata

With the invention of new far-infrared (FIR) and radio mm and sub-mm instruments (DESIR on SMESE satellite, ESO-ALMA), there is a growing interest in observations and analysis of solar flares in this so far unexplored wavelength region. Two…

太阳与恒星天体物理 · 物理学 2009-05-22 J. Kašparová , P. Heinzel , M. Karlický , Z. Moravec , M. Varady

We developed a flare prediction model using machine learning, which is optimized to predict the maximum class of flares occurring in the following 24 h. Machine learning is used to devise algorithms that can learn from and make decisions on…

太阳与恒星天体物理 · 物理学 2017-02-01 N. Nishizuka , K. Sugiura , Y. Kubo , M. Den , S. Watari , M. Ishii

Solar flares are explosions on the Sun. They happen when energy stored in magnetic fields around solar active regions (ARs) is suddenly released. In this paper, we present a transformer-based framework, named SolarFlareNet, for predicting…

太阳与恒星天体物理 · 物理学 2024-05-28 Yasser Abduallah , Jason T. L. Wang

Solar flares are 3D phenomenon but modelling a flare in 3D, including many of the important processes in the chromosphere, is a computational challenge. Accurately modelling the chromosphere is important, even if the transition region and…

太阳与恒星天体物理 · 物理学 2020-09-02 Graham S. Kerr , Joel C. Allred , Vanessa Polito

Thermal changes in coronal loops are well-studied, both in quiescent active regions and in flaring scenarios. However, relatively little attention has been paid to loop emission in the hours before the onset of a solar flare; here, we…

太阳与恒星天体物理 · 物理学 2024-11-20 Kara L. Kniezewski , Emily I. Mason , Vadim M. Uritsky , Seth H. Garland

Post-flare arcades are well-known components of solar flare evolution, which have been observed for several decades. Coronal rain, cascades of catastrophically-cooled plasma, outline the loops and provide eye-catching evidence of the recent…

太阳与恒星天体物理 · 物理学 2022-11-09 Emily I. Mason , Kara L. Kniezewski

The mid-infrared (mid-IR) range has been mostly unexplored for the investigation of solar flares. It is only recently that new mid-IR flare observations have begun opening a new window into the response and evolution of the solar…

Emission from Sgr A* is highly variable at both X-ray and infrared (IR) wavelengths. Observations over the last ~20 years have revealed X-ray flares that rise above a quiescent thermal background about once per day, while faint X-ray flares…

We investigate the sequence of events leading to the solar X1 flare SOL2014-03-29T17:48. Because of the unprecedented joint observations of an X-flare with the ground-based Dunn Solar Telescope and the spacecraft IRIS, Hinode, RHESSI,…

太阳与恒星天体物理 · 物理学 2015-06-11 Lucia Kleint , Marina Battaglia , Kevin Reardon , Alberto Sainz Dalda , Peter R. Young , Säm Krucker

Observations of strong solar wind proton flux correlations with ROSAT X-ray rates along with high spectral resolution Chandra observations of X-rays from the dark Moon show that soft X-ray emission mirrors the behavior of the solar wind. In…

天体物理学 · 物理学 2009-11-10 M. R. Collier , T. E. Moore , S. L. Snowden , K. D. Kuntz

Solar flares are the most powerful explosions occurring in the solar system, which may lead to disastrous space weather events and impact various aspects of our Earth. So far, it is still a big challenge in modern astrophysics to understand…

太阳与恒星天体物理 · 物理学 2016-12-28 Baolin Tan , Zhiqiang Yu , Jing Huang , Chengming Tan , Yin Zhang

Solar observations in the infrared domain can bring important clues on the response of the low solar atmosphere to primary energy released during flares. At present the infrared continuum has been detected at 30 THz (10 $\mu$m) in only a…

太阳与恒星天体物理 · 物理学 2015-11-04 G. Trottet , J. -P. Raulin , A. MacKinnon , G. Giménez de Castro , P. J. A. Simões , D. Cabezas , V. de La Luz , M. Luoni , P. Kaufmann

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

The soft X-ray emissions of solar flares come mainly from the bright coronal loops at the highest temperatures normally achieved in the flare process. Their ubiquity has led to their use as a standard measure of flare occurrence and energy,…

太阳与恒星天体物理 · 物理学 2015-06-03 Paulo J. A. Simões , Hugh S. Hudson , Lyndsay Fletcher

Solar flares, as one of the most prominent manifestations of solar activity, have a profound impact on both the Earth's space environment and human activities. As a result, accurate solar flare prediction has emerged as a central topic in…

太阳与恒星天体物理 · 物理学 2026-03-31 Mingfu Shao , Suo Liu , Haiqing Xu , Peng Jia , Hui Wang , Liyue Tong , Yang Bai , Chen Yang , Yuyang Li , Nan Li , Jiaben Lin

Solar irradiance is the primary input for all solar energy generation systems. The amount of available solar radiation over time under the local weather conditions helps to decide the optimal location, technology and size of a solar energy…

大气与海洋物理 · 物理学 2019-12-17 T. A. Fathima , Vasudevan Nedumpozhimana , Yee Hui Lee , Stefan Winkler , Soumyabrata Dev

X-ray and EUV solar flare emission cause increases in the Earth's dayside ionospheric electron density. While the response of the lower ionosphere to X-rays is well studied, the delay between EUV flare emission and the response of the…

太阳与恒星天体物理 · 物理学 2025-08-06 Aisling N. O'Hare , Susanna Bekker , Harry J. Greatorex , Ryan O. Milligan

In previous works we have developed a method to convert solar X-ray data, collected with the Yohkoh/SXT, into templates of stellar coronal observations. Here we apply the method to several solar flares, for comparison with stellar X-ray…

天体物理学 · 物理学 2009-11-06 F. Reale , G. Peres , S. Orlando