Results 31 to 40 of about 630 (149)

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

Strongest Coronal Magnetic Fields in Solar Cycles 23 and 24: Probing, Statistics, and Implications

The Astrophysical Journal, 2023
A strong coronal magnetic field, when present, manifests itself as bright microwave sources at high frequencies produced by the gyroresonant (GR) emission mechanism in thermal coronal plasma.
Viktor V. Fedenev, Sergey A. Anfinogentov, Gregory D. Fleishman   +2 more
doaj   +1 more source

The Nancay Multifrequency Radioheliograph [PDF]

Highlights of Astronomy, 1986
The Nançay Multifrequency Radioheliograph is an extension of the previous Mark III instrument described in Solar Radioheliograph Group (1983). The table I summarizes the characteristics of the instrument.
openaire   +1 more source

Scale sequentially CLEAN for Mingantu Spectral Radioheliograph

Solar-Terrestrial Physics, 2019
MingantU SpEctral Radioheliograph (MUSER) is a solar-dedicated radio heliograph, adopting aperture synthesis technique to image the Sun in the frequency range of 0.4 GHz to 15 GHz.
Jun Cheng, Yihua Yan, Dong Zhao, Long Xu
doaj   +1 more source

Performance Comparison of Power Divider and Fiber Splitter in the Fiber-Based Frequency Transmission System of Solar Radio Observation

IEEE Access, 2021
Time-frequency synchronization plays an important role in the construction of solar radio telescopes (such as heliograph and interferometry). In the development of a synchronization system, time-frequency signal is divided and transmitted to each antenna
Yuqing Liu, Daopeng Ren, Fabao Yan, Zhao Wu, Zhen Dong, Yao Chen   +5 more
doaj   +1 more source

Solar imaging capabilities of the Brazilian Decimetric Array [PDF]

Geofísica Internacional, 2000
In collaboration with the Department of Physics at the Universidade Federal de São Carlos (UFSC), the Instituto Nacional de Pesquisas Espaciais (INPE), and the Universidade Federal de Santa Maria (UFSM) efforts are made to develop solar tomography using ...
M. L. Mucheroni, C. E. Moron, W. D. Gonzalez, J. H. A. Sobral, G. Swarup, R. R. Rosa, J. R. Cecatto, F. C. R. Fernandes, K. R. Subramanian, H. S. Sawant, E. Lüdke   +10 more
doaj  

Comparing results of real-scale time MHD modeling with observational data for first flare M 1.9 in AR 10365

Open Astronomy, 2022
As shown in the first results of MHD simulations in the real scale of time, above the active region (AR) 10365, during the first flare M 1.9 (05/26/2003 05:34) at a height of 16–18 mm (lower corona), a singular line of magnetic field appears.
Borisenko Alexey Vasilevich, Podgorny Igor Maksimovich, Podgorny Alexander Igorevich   +2 more
doaj   +1 more source

MMLTC: A Novel Tolerance‐Based Clustering Framework for Multimodal Sentiment and Harmful Meme Classification in Multilingual Settings

Computational Intelligence, Volume 42, Issue 2, April 2026.
ABSTRACT This work introduces a novel Tolerance‐Based Clustering Framework (MMLTC) framework for affective analytics of multimodal/multilingual content in social media. A key feature of the MMLTC framework is its ability to overcome limitations of prior tolerance‐based classifiers through the construction of label specific pure tolerance classes ...
Jaher Hassan Chowdhury, Sheela Ramanna
wiley   +1 more source

Microwave diagnostics of flare plasma by the direct fitting method based on data from the Siberian Radioheliograph

Solar-Terrestrial Physics
In this paper, we analyze images and the frequency spectrum of microwave emission in the maximum of brightness distribution in the January 20, 2022 and July 16, 2023 flares recorded by the Siberian Radioheliograph in the 3–6 GHz and 6–12 GHz ranges.
.Smirnov D. A., Melnikov V. F
doaj   +1 more source

Spectral Analysis of Solar Radio Type III Bursts from 20 kHz to 410 MHz

The Astrophysical Journal, 2022
We present the statistical analysis of the spectral response of solar radio type III bursts over the wide frequency range between 20 kHz and 410 MHz. For this purpose, we have used observations that were carried out using both spaced-based (Wind/Waves ...
K. Sasikumar Raja, Milan Maksimovic, Eduard P. Kontar, Xavier Bonnin, Philippe Zarka, Laurent Lamy, Hamish Reid, Nicole Vilmer, Alain Lecacheux, Vratislav Krupar, Baptiste Cecconi, Lahmiti Nora, Laurent Denis   +12 more
doaj   +1 more source