Observation of a reversal of rotation in a sunspot during a solar flare [PDF]
Nature Communications, 2016 Back reaction of coronal magnetic fields on the solar surface may help to understand the coronal reconfiguration during a solar flare. Here the authors report observation of reversal of the rotation of a sunspot during a X1.6 flare with data from HMI.
Yi Bi +6 more
doaj +3 more sources
Fast plasmoid-mediated reconnection in a solar flare. [PDF]
Nat Commun, 2022 Magnetic reconnection is a multi-faceted process of energy conversion in astrophysical, space and laboratory plasmas that operates at microscopic scales but has macroscopic drivers and consequences.
Yan X +10 more
europepmc +2 more sources
Solar flare accelerates nearly all electrons in a large coronal volume. [PDF]
Nature, 2022 Solar flares, driven by prompt release of free magnetic energy in the solar corona1,2, are known to accelerate a substantial portion (ten per cent or more)3,4 of available electrons to high energies.
Fleishman GD +4 more
europepmc +2 more sources
The development of lower-atmosphere turbulence early in a solar flare. [PDF]
Sci Adv, 2018 IRIS observation of the initiation of a solar flare suggests that turbulence helps to heat the Sun’s lower atmosphere. We present the first observational study of the onset and evolution of solar flare turbulence in the lower solar atmosphere on an ...
Jeffrey NLS +3 more
europepmc +3 more sources
Solar Flare Intensity Prediction With Machine Learning Models [PDF]
Space Weather, 2020 We develop a mixed long short‐term memory (LSTM) regression model to predict the maximum solar flare intensity within a 24‐hr time window 0–24, 6–30, 12–36, and 24–48 hr ahead of time using 6, 12, 24, and 48 hr of data (predictors) for each Helioseismic ...
Zhenbang Jiao +6 more
doaj +2 more sources
Unprecedented Fine Structure of a Solar Flare Revealed by the 1.6 m New Solar Telescope. [PDF]
Sci Rep, 2016 Solar flares signify the sudden release of magnetic energy and are sources of so called space weather. The fine structures (below 500 km) of flares are rarely observed and are accessible to only a few instruments world-wide.
Jing J +5 more
europepmc +3 more sources
Mars Upper Atmospheric Responses to the 10 September 2017 Solar Flare: A Global, Time‐Dependent Simulation [PDF]
Geophysical Research Letters, 2019 We report the first global, time‐dependent simulation of the Mars upper atmospheric responses to a realistic solar flare event, an X8.2 eruption on 10 September 2017.
Xiaohua Fang +14 more
doaj +2 more sources
On the Performance of Multi-Instrument Solar Flare Observations During Solar Cycle 24. [PDF]
Sol Phys, 2018 The current fleet of space-based solar observatories offers us a wealth of opportunities to study solar flares over a range of wavelengths. Significant advances in our understanding of flare physics often come from coordinated observations between ...
Milligan RO, Ireland J.
europepmc +3 more sources
Verification of operational solar flare forecast: Case of Regional Warning Center Japan [PDF]
Journal of Space Weather and Space Climate, 2017 In this article, we discuss a verification study of an operational solar flare forecast in the Regional Warning Center (RWC) Japan. The RWC Japan has been issuing four-categorical deterministic solar flare forecasts for a long time.
Kubo Yûki, Den Mitsue, Ishii Mamoru
doaj +2 more sources
Solar Flare Effects on the Earth’s Lower Ionosphere [PDF]
Solar Physics, 2021 Solar flares significantly impact the conditions of the Earth’s ionosphere. In particular, the sudden increase in X-ray flux during a flare penetrates down to the lowest-lying D-region and dominates ionization at these altitudes (≈60\documentclass[12pt ...
L. Hayes +3 more
semanticscholar +1 more source