Results 1 to 10 of about 340 (99)

Understanding the Relationship between Solar Coronal Abundances and F10.7 cm Radio Emission

open access: yesThe Astrophysical Journal, 2023
Sun-as-a-star coronal plasma composition, derived from full-Sun spectra, and the F10.7 radio flux (2.8 GHz) have been shown to be highly correlated ( r = 0.88) during solar cycle 24.
Andy S. H. To   +9 more
doaj   +1 more source

CORONAL JETS AS A CAUSE OF MICROWAVE NEGATIVE BURSTS

open access: yesSolar-Terrestrial Physics, 2020
We have investigated the cause of three “isolated” negative radio bursts recorded one after another at several frequencies in the 1–17 GHz range at the Nobeyama Radio Observatory, Ussuriysk Astrophysical Observatory, and Learmonth Solar Observatory on ...
I.V. Kuzmenko
doaj   +1 more source

Morphology of Solar Type II Bursts Caused by Shock Propagation through Turbulent and Inhomogeneous Coronal Plasma

open access: yesThe Astrophysical Journal, 2023
Type II solar bursts are radio signatures of shock waves in the solar corona driven by solar flares or coronal mass ejections (CMEs). Therefore, these bursts present complex spectral morphologies in solar dynamic spectra.
Artem Koval   +6 more
doaj   +1 more source

Multifrequency Microwave Imaging of Weak Transients from the Quiet Solar Corona

open access: yesThe Astrophysical Journal, 2023
Understanding the dynamics of the quiet solar corona is important for answering key questions including the coronal heating problem. Multiple studies have suggested small-scale magnetic-reconnection events may play a crucial role.
Surajit Mondal, Bin Chen, Sijie Yu
doaj   +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

SOLAR WIND INVESTIGATIONS BY OBSERVATIONS OF INTERPLANETARY SCINTILLATIONS OF COSMIC RADIO SOURCES AT DECAMETER WAVELENGTHS

open access: yesRadio Physics and Radio Astronomy, 2017
Purpose: Description of the solar wind investigation technique based on interplanetary scintillation observations of the decameter radio emission of space radio sources.
N. N. Kalinichenko   +7 more
doaj   +1 more source

Multiwave Siberian Radioheliograph

open access: yesSolar-Terrestrial Physics, 2020
The article discusses characteristics, fundamental and applied tasks of the Siberian Radioheliograph that is developed at the ISTP SB RAS Radio Astrophysical Observatory and spectropolarimetric complex that measures the total flux of solar radio emission.
Altyntsev A.T.   +13 more
doaj   +1 more source

THE ROLE OF RADIO WAVE PROPAGATION EFFECTS IN THE SOLAR CORONA TO INTERPRET THE BEHIND-LIMB BURSTS

open access: yesRadio Physics and Radio Astronomy, 2016
Purpose: The radio emission propagation of solar radio bursts in the solar corona which sources are located on the far side of the Sun relative to the observer on Earth is studied.
A. A. Stanislavsky
doaj   +1 more source

Radio Measurements of the Magnetic Field in the Solar Chromosphere and the Corona

open access: yesFrontiers in Astronomy and Space Sciences, 2021
The structure of the upper solar atmosphere, on all observable scales, is intimately governed by the magnetic field. The same holds for a variety of solar phenomena that constitute solar activity, from tiny transient brightening to huge Coronal Mass ...
Costas E. Alissandrakis, Dale E. Gary
doaj   +1 more source

An Unsupervised Machine Learning-based Algorithm for Detecting Weak Impulsive Narrowband Quiet Sun Emissions and Characterizing Their Morphology

open access: yesThe Astrophysical Journal, 2023
The solar corona is extremely dynamic. Every leap in observational capabilities has been accompanied by unexpected revelations of complex dynamic processes.
Shabbir Bawaji   +4 more
doaj   +1 more source

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