Results 31 to 40 of about 1,129,035 (260)
Identifying Solar Flare Precursors Using Time Series of SDO/HMI Images and SHARP Parameters [PDF]
Space Weather, 2019 In this paper we present several methods to identify precursors that show great promise for early predictions of solar flare events. A data preprocessing pipeline is built to extract useful data from multiple sources, Geostationary Operational ...
Yang Chen +9 more
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Diagnostics of solar flare reconnection [PDF]
Nonlinear Processes in Geophysics, 2004 Abstract. We present new diagnostics of the solar flare reconnection, mainly based on the plasma radio emission. We propose that the high-frequency (600-2000 MHz) slowly drifting pulsating structures map the flare magnetic field reconnection. These structures correspond to the radio emission from plasmoids which are formed in the extended current sheet
Karlický, M., Bárta, M.
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Full-Disk Solar Flare Forecasting Model Based on Data Mining Method
Advances in Astronomy, 2019 Solar flare is one of the violent solar eruptive phenomena; many solar flare forecasting models are built based on the properties of active regions. However, most of these models only focus on active regions within 30° of solar disk center because of the
Rong Li, Yong Du
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Feature Ranking of Active Region Source Properties in Solar Flare Forecasting and the Uncompromised Stochasticity of Flare Occurrence [PDF]
Astrophysical Journal, 2019 Solar flares originate from magnetically active regions (ARs) but not all solar ARs give rise to a flare. Therefore, the challenge of solar flare prediction benefits from an intelligent computational analysis of physics-based properties extracted from AR
C. Campi +5 more
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The Solar Flare Complex Network [PDF]
The Astrophysical Journal, 2017 Abstract We investigate the characteristics of the solar flare complex network. The limited predictability, nonlinearity, and self-organized criticality of the flares allow us to study systems of flares in the field of the complex systems.
Akbar Gheibi +2 more
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Solar–Stellar Connection: X-Ray Flares to Energetic (E > 10 MeV) Particle Events
The Astrophysical Journal, 2023 Energetic particle environments are an important factor for the viability of life on exoplanets surrounding flare stars. In the heliosphere, large gradual solar energetic ( E > 10 MeV) particle (SEP) events are produced by shocks from fast coronal mass ...
S. W. Kahler, A. G. Ling
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Persistent Quasi-periodic Pulsations during a Large X-class Solar Flare [PDF]
Astrophysical Journal, 2019 Solar flares often display pulsating and oscillatory signatures in the emission, known as quasi-periodic pulsations (QPP). QPP are typically identified during the impulsive phase of flares, yet in some cases, their presence is detected late into the ...
L. Hayes +5 more
semanticscholar +1 more source
A solar tornado triggered by flares? [PDF]
Astronomy & Astrophysics, 2013 7 pages, 8 Figures, accepted for publication in A&A, Movies can be found at http://www.mps.mpg.de/data/outgoing/panesar/tornado/
Panesar, N. K. +3 more
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Chromospheric Bubbles in Solar Flares [PDF]
The Astrophysical Journal Letters, 2020 Abstract We analyze a grid of radiative hydrodynamic simulations of solar flares to study the energy balance and response of the atmosphere to nonthermal electron beam heating. The appearance of chromospheric bubbles is one of the most notable features that we find in the simulations.
A. Reid +3 more
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Symposium - International Astronomical Union, 1968 A model of solar flares is proposed in which the preflare state comprises a bipolar magnetic-field structure associated with a bipolar photospheric magnetic region. At low heights, the magnetic-field lines are closed but, at sufficiently great heights, the lines are drawn out into an open structure comprising a bipolar flux tube containing a ‘neutral ...
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