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Full-Disk Solar Flare Forecasting Model Based on Data Mining Method

open access: yesAdvances 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
doaj   +1 more source

Solar flares and energetic particles [PDF]

open access: yesPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2012
Solar flares are now observed at all wavelengths from γ -rays to decametre radio waves. They are commonly associated with efficient production of energetic particles at all energies. These particles play a major role in the active Sun because they contain a large amount of the energy released
openaire   +3 more sources

Diagnostics of the Solar X-Flare Impact on Lower Ionosphere through the VLF-NAA Signal Recordings

open access: yesOpen Astronomy, 2011
An analysis of four solar flare X-ray irradiance effects on VLF signal amplitude and phase delay variations on the NAA/24.0 kHz signal trace during the period from 2005 September to 2006 December was carried out.
Kolarski Aleksandra   +2 more
doaj   +1 more source

Solar–Stellar Connection: X-Ray Flares to Energetic (E > 10 MeV) Particle Events

open access: yesThe 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
doaj   +1 more source

THE PROCESSES OF ENERGY RELEASE IN LOW-POWER SOLAR FLARES

open access: yesSolar-Terrestrial Physics, 2019
Using flare patrol data for 1972–2010 [http://www.ngdc.noaa.gov/stp/space-weather/solar-data/solar-features/solar-flares/], we have conducted statistical studies of small solar flares.
Borovik A.V., Zhdanov A.A.
doaj   +1 more source

Statistical properties of solar Hα flare activity

open access: yesJournal of Space Weather and Space Climate, 2017
Magnetic field structures on the solar atmosphere are not symmetric distribution in the northern and southern hemispheres, which is an important aspect of quasi-cyclical evolution of magnetic activity indicators that are related to solar dynamo theories.
Deng Linhua   +3 more
doaj   +1 more source

Global response of Magnetic field and Ionosonde observations to intense solar flares on 6 and 10 September 2017

open access: yesE3S Web of Conferences, 2018
Intense X-ray fluxes during solar flares are known to cause enhanced ionization in the Earth’s ionospheric D, E and F region. This sudden change of ionospheric electron density profile is serious problem to radio wave communication and navigation system.
Fujimoto Akiko   +2 more
doaj   +1 more source

Deep Learning–based Solar Flare Forecasting Model. III. Extracting Precursors from EUV Images

open access: yesThe Astrophysical Journal Supplement Series, 2023
A solar flare is one of the most intense solar activities, and flare forecasting is necessary to avoid its destructive impact on the near-Earth space environment and technological infrastructure.
Dezhi Sun   +3 more
doaj   +1 more source

Solar flares: An overview

open access: yesAdvances in Space Research, 1992
This is a survey of solar phenomena and physical models that may be useful for improving forecasts of solar flares and proton storms in interplanetary space. Knowledge of the physical processes that accelerate protons has advanced because of gamma-ray and X-ray observations from the Solar Maximum Mission telescopes.
openaire   +2 more sources

Multi‐Source Forecast of Solar Cycle Flare Activity Using the Novel Informer‐Based Models

open access: yesSpace Weather
Solar flares, the significant indicators of solar activity, have an impact on Earth's satellites and communication systems. Accurate prediction of solar flare events is crucial for mitigating these effects.
Jie Cao   +11 more
doaj   +1 more source

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