Results 21 to 30 of about 1,793,812 (174)

Characteristics of the Accelerated Electrons Moving along the Loop Derived from Cyclical Microwave Brightenings at the Footpoints

open access: yesThe Astrophysical Journal Letters, 2023
Many particles are accelerated during solar flares. To understand the acceleration and propagation processes of electrons, we require the pitch-angle distributions of the particles.
Keitarou Matsumoto   +2 more
doaj   +1 more source

Lightning, Solar Flares and Radio Galaxies [PDF]

open access: yesNature, 1966
IN 1925, when it was still believed that a potential of n × 109 V was necessary to cause a lightning flash1a, C. T. R. Wilson put forward the suggestion that the soft cosmic rays up to about 109 eV might be accounted for by runaway electrons in thundercloud fields1b.
openaire   +1 more source

Observation of Radio Solar Flares in RNO-G

open access: yesProceedings of 39th International Cosmic Ray Conference — PoS(ICRC2025)
The Radio Neutrino Observatory - Greenland (RNO-G) is a multipurpose experiment that extends its scope to sciences like solar heliophysics and radioglaciology beyond its primary focus to detect ultra-high energy neutrinos and cosmic rays. In this contribution, we discuss the recent observations of solar flares in RNO-G.
Mohammad Ful Hossain Seikh   +79 more
openaire   +2 more sources

Hard X-rays, ejecta, and their associated decimetric radio emission in solar flares [PDF]

open access: yes, 2003
We investigate temporal and spatial correlations in solar flares of hard X-rays (HXR) and decimetric continuum emissions, ejecta, and CMEs. The focus is on three M-class flares, supported by observations from other flares.
Saint-Hilaire, Pascal (author)   +1 more
core   +1 more source

Solar Radio Bursts Associated with In Situ Detected Energetic Electrons in Solar Cycles 23 and 24

open access: yesUniverse, 2022
The first comprehensive analysis between the in situ detected solar energetic electrons (SEEs) from ACE/EPAM satellite and remotely observed radio signatures in solar cycles (SCs) 23 and 24 (1997–2019) is presented.
Rositsa Miteva   +2 more
doaj   +1 more source

Cold Solar Flares. I. Microwave Domain

open access: yesThe Astrophysical Journal, 2023
We identify a set of ∼100 “cold” solar flares and perform a statistical analysis of them in the microwave range. Cold flares are characterized by a weak thermal response relative to nonthermal emission.
Alexandra L. Lysenko   +6 more
doaj   +1 more source

A catalogue of white-light flares observed by Yohkoh [PDF]

open access: yes, 2003
The aspect camera of the Soft X-ray Telescope (SXT) on Yohkoh provided the first systematic survey of white-light flares from an observatory in space. The observations were made in the Fraunhofer g-band at a pixel size of 2.46 arcsec and a typical sample
H. S. Hudson   +7 more
core   +1 more source

Effects of solar flares on the ionosphere as shown by the dynamics of ionograms recorded in Europe and South Africa [PDF]

open access: yesAnnales Geophysicae, 2019
We have investigated the solar flare effects on ionospheric absorption with the systematic analysis of ionograms measured at midlatitude and low-latitude ionosonde stations under different solar zenith angles.
V. Barta   +5 more
doaj   +1 more source

Statistical analysis of solar radio fiber bursts and relations with flares

open access: yes, 2021
Fiber bursts are a type of fine structure that frequently occurs in solar flares. Although observations and theory of fiber bursts have been studied for decades, their microphysical process, emission mechanism, and especially the physical links with the ...
Baolin Tan   +4 more
core   +1 more source

Radio bursts of very short duration: Fine structure of solar flare emissions [PDF]

open access: yesGeofísica Internacional, 2006
The fine time structure of sub-second radio events of solar flare emissions is described on the multichannel polarimeter of Station Basovizza at 237, 327, and 408 MHz frequencies.
R. E. Rodríguez Taboada   +1 more
doaj  

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