Results 1 to 10 of about 438 (164)
Understanding the Relationship between Solar Coronal Abundances and F10.7 cm Radio Emission
The 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
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Imaging spectroscopy reveals spike-like repeating radio burst pairs in the solar corona [PDF]
Nature CommunicationsSolar radio bursts exhibit complex fine structures that reveal intricate coronal plasma dynamics. Here, we report detection of spike-like repeating burst pairs, characterized by two short-lived (0.1-2 s), narrowband components separated by about 4 s at ...
Suli Ma +4 more
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A MODEL FOR RADIO EMISSION FROM SOLAR CORONAL SHOCKS [PDF]
Astrophysical Journal, 2014 Solar coronal shocks are very common phenomena in the solar atmosphere and are believed to be the drivers of solar type II radio bursts. However, the microphysical nature of these emissions is still an open problem. This paper proposes that electron cyclotron maser (ECM) emission is responsible for the generation of radiations from the coronal shocks ...
Ling Chen
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The Connection of Solar Wind Parameters with Radio and UV Emission from Coronal Holes [PDF]
Solar Physics, 2011 This paper presents the results of a comparison between observations of coronal holes in UV (SOHO EIT) and radio emission (17, 5.7 GHz, 327 and 150.9 MHz, from NoRH, SSRT and Nancay radioheliographs), and solar wind parameters, from ACE spacecraft data over the period 12 March – 31 May 2007.
Myagkova I N
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Oscillation of solar radio emission at coronal acoustic cut-off frequency [PDF]
Astronomy and Astrophysics, 2017 10 pages, 6 figures, accepted in A& ...
Teimuraz Zaqarashvili +2 more
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Astrophysical Journal, 2013 Solar type I radio storms are long-lived radio emissions from the solar atmosphere. It is believed that these type I storms are produced by energetic electrons trapped within a closed magnetic structure and are characterized by a high ordinary (O) mode polarization. However, the microphysical nature of these emissions is still an open problem. Recently,
Ling Chen
exaly +2 more sources
Astrophysical Journal, 2013 Low-frequency (80 MHz) imaging and spectral (≈85-20 MHz) observations of moving type IV radio bursts associated with coronal mass ejections (CMEs) from the Sun on three different days are reported. The estimated drift speed of the bursts is in the range ≈150-500 km s–1.
P Kishore, Sargam Mulay
exaly +2 more sources
New Results on the Direct Observations of Thermal Radio Emission from a Solar Coronal Mass Ejection [PDF]
Geophysical Research Letters, 2021 AbstractWe report observations of thermal emission from the frontal structure of a coronal mass ejection (CME) using data obtained with the Gauribidanur RAdioheliograPH simultaneously at 80 and 53 MHz on May 1, 2016. The CME was due to activity on the far side of the Sun, but near its limb. No nonthermal radio burst activity was noticed.
R. Ramesh +4 more
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AN ANALYSIS OF INTERPLANETARY SOLAR RADIO EMISSIONS ASSOCIATED WITH A CORONAL MASS EJECTION [PDF]
The Astrophysical Journal Letters, 2016 ABSTRACT Coronal mass ejections (CMEs) are large-scale eruptions of magnetized plasma that may cause severe geomagnetic storms if Earth directed. Here, we report a rare instance with comprehensive in situ and remote sensing observations of a CME combining white-light, radio, and plasma measurements from four different vantage points. For
Krupar, V. +15 more
openaire +6 more sources
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
doaj +1 more source