Results 1 to 10 of about 1,793,812 (174)

M-Class Solar Flares in Solar Cycles 23 and 24: Properties and Space Weather Relevance

open access: yesUniverse, 2022
A comprehensive statistical analysis on the properties and accompanied phenomena of all M-class solar flares (as measured in soft X-rays) in the last two solar cycles (1996–2019) is presented here with a focus on their space weather potential.
Rositsa Miteva, Susan W. Samwel
doaj   +2 more sources

RADIO EMISSION FROM ACCELERATION SITES OF SOLAR FLARES [PDF]

open access: yesThe Astrophysical Journal, 2009
ApJL, in ...
Li, Yixuan, Fleishman, Gregory D.
openaire   +3 more sources

Space weather study through analysis of solar radio bursts detected by a single-station CALLISTO spectrometer [PDF]

open access: yesAnnales Geophysicae, 2021
This article summarises the results of an analysis of solar radio bursts (SRBs) detected by the Compound Astronomical Low-cost Low-frequency Instrument for Spectroscopy and Transportable Observatory (CALLISTO) spectrometer hosted by the University of ...
T. Ndacyayisenga   +3 more
doaj   +1 more source

Are There Radio-quiet Solar Flares? [PDF]

open access: yesSolar Physics, 2007
Some 15% of solar flares having a soft X-ray flux above GOES class C5 are reported to lack coherent radio emission in the 100-4000 MHz range (type I-V and decimetric emissions). A detailed study of 29 such events reveals that 22 (76%) of them occurred at a radial distance of more than 800″ from the disk center, indicating that radio waves from the limb
Benz, Arnold O.   +2 more
openaire   +7 more sources

Investigation of the Sudden Solar Ionospheric Disturbance using Radio Telescope [PDF]

open access: yesEPJ Web of Conferences, 2020
Low-frequency radio telescopes are cheap and useful devices for the investigation of terrestrial and extra-terrestrial emissions. These emissions come either from the Sun and the planet Jupiter to terrestrial emissions.
Aqasha Adam   +3 more
doaj   +1 more source

Investigating the effect of large solar flares on the ionosphere based on novel Digisonde data comparing three different methods

open access: yesFrontiers in Astronomy and Space Sciences, 2023
Increased solar radiation during solar flare events can cause additional ionization and enhanced absorption of the electromagnetic (EM) waves in the ionosphere leading to partial or even total radio fade-outs.
Attila Buzás   +8 more
doaj   +1 more source

Validation of the SMOS Mission for Space Weather Operations: The Potential of Near Real‐Time Solar Observation at 1.4 GHz

open access: yesSpace Weather, 2021
Soil Moisture and Ocean Salinity (SMOS) is an ESA mission observing Earth at 1.4 GHz with full polarimetry. SMOS images are affected by a noise of solar origin produced by the Sun appearing in the antenna's field of view.
M. Flores‐Soriano   +2 more
doaj   +1 more source

Operational prediction of solar flares using a transformer-based framework

open access: yesScientific Reports, 2023
Solar flares are explosions on the Sun. They happen when energy stored in magnetic fields around solar active regions (ARs) is suddenly released. Solar flares and accompanied coronal mass ejections are sources of space weather, which negatively affects a
Yasser Abduallah   +3 more
doaj   +1 more source

Detection of Solar Flares from the Analysis of Signal-to-Noise Ratio Recorded by Digisonde at Mid-Latitudes

open access: yesRemote Sensing, 2022
This work proposes a new indirect method to detect the impact of solar flares on ionospheric sounding measurements, i.e., on the signal-to-noise ratio of ionospheric reflected radio signals. The method allows us to detect and characterize the ionospheric
Victor de Paula   +4 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

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