Results 1 to 10 of about 3,497 (260)

Incoherent Solar Radio Emission [PDF]

Frontiers in Astronomy and Space Sciences, 2020
Incoherent solar radio radiation comes from the free-free, gyroresonance, and gyrosynchrotron emission mechanisms. Free-free is primarily produced from Coulomb collisions between thermal electrons and ions.
Alexander Nindos
doaj   +3 more sources

Tracing the heliospheric magnetic field via anisotropic radio-wave scattering [PDF]

Scientific Reports
Astrophysical radio sources are embedded in turbulent magnetised environments. In the 1 MHz sky, solar radio bursts are the brightest sources, produced by electrons travelling along magnetic field lines from the Sun through the heliosphere.
Daniel L. Clarkson, Eduard P. Kontar, Nicolina Chrysaphi, A. Gordon Emslie, Natasha L. S. Jeffrey, Vratislav Krupar, Antonio Vecchio   +6 more
doaj   +2 more sources

An Anisotropic Density Turbulence Model from the Sun to 1 au Derived from Radio Observations

The Astrophysical Journal, 2023
Solar radio bursts are strongly affected by radio-wave scattering on density inhomogeneities, changing their observed time characteristics, sizes, and positions.
Eduard P. Kontar, A. Gordon Emslie, Daniel L. Clarkson, Xingyao Chen, Nicolina Chrysaphi, Francesco Azzollini, Natasha L. S. Jeffrey, Mykola Gordovskyy   +7 more
doaj   +1 more source

CORONAL JETS AS A CAUSE OF MICROWAVE NEGATIVE BURSTS

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

Frontiers 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

SPORADIC RADIO EMISSION OF SPACE OBJECTS AT LOW-FREQUENCIES [PDF]

Radio Physics and Radio Astronomy, 2021
Purpose: The results of studies of sporadic radio emission of several types of space radio sources, including neutron stars and planets of the Solar System, are presented.
V. V. Zakharenko, V. B. Ryabov, I. P. Kravtsov, K. Yu. Mylostna, V. Yu. Kharlanova, I. Y. Vasylieva, O. M. Ulyanov, O. O. Konovalenko, M. M. Kalinichenko, P. Zarka, H. O. Rucker, G. Fischer, S. M. Yerin, J.-M. Grießmeier, M. A. Sydorchuk, A. I. Shevtsova, A. O. Skoryk, V. A. Shevchenko   +17 more
doaj   +1 more source

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

Radio 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

Observations of Solar Type III radio bursts by Cassini/RPWS experiment [PDF]

Advances in Radio Science, 2020
In this study, we report on the occurrence of solar Type III radio bursts recorded by radio and plasma wave experiment (RPWS) experiment onboard Cassini spacecraft.
M. Y. Boudjada, A. Abou el-Fadl, P. H. M. Galopeau, E. Al-Haddad, H. Lammer   +4 more
doaj   +1 more source

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

Radio 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, M. R. Olyak, O. O. Konovalenko, I. N. Bubnov, S. N. Yerin, A. I. Brazhenko, O. L. Ivantishin, O. A. Lytvynenko   +7 more
doaj   +1 more source

A New Component from the Quiet Sun from Radio to Gamma Rays: Synchrotron Radiation by Galactic Cosmic-Ray Electrons

The Astrophysical Journal, 2023
The quiet Sun, i.e., in its nonflaring state or nonflaring regions, emits thermal radiation from radio to ultraviolet. The quiet Sun also produces nonthermal radiation observed in gamma rays due to interactions of Galactic cosmic rays (GCRs) with the ...
Elena Orlando, Vahe’ Petrosian, Andrew Strong   +2 more
doaj   +1 more source