Results 31 to 40 of about 133 (107)

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

open access: yesIEEE 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   +5 more
doaj   +1 more source

Scale sequentially CLEAN for Mingantu Spectral Radioheliograph

open access: yesSolar-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

Radioheliograph array for the solar atmospheric dynamics [PDF]

open access: yesSCIENTIA SINICA Physica, Mechanica & Astronomica, 2019
Studying the origin of solar activities, revealing the basic laws of solar activities and forecasting the violent solar eruptions are not only important problems in astronomy, but also the basis of protecting the near-Earth space environment and the many high-technology systems.
YiHua YAN   +4 more
openaire   +1 more source

Simulating Siberian Radioheliograph response to the quiet Sun

open access: yesSolar-Terrestrial Physics, 2018
The Siberian Radioheliograph (SRH) correlation plot is the time dependence of the sum of absolute values of complex correlations over all baselines. These plots are built for each operating frequency of SRH.
Lesovoi S.V., Kobets V.S.
doaj   +1 more source

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

open access: yesOpen 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   +2 more
doaj   +1 more source

Solar imaging capabilities of the Brazilian Decimetric Array [PDF]

open access: yesGeofísica 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   +10 more
doaj  

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

open access: yesThe 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   +12 more
doaj   +1 more source

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

open access: yesComputational 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

open access: yesSolar-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

Statistical analysis of microflares as observed by the 4–8 GHz spectropolarimeter

open access: yesSolar-Terrestrial Physics, 2023
Radio observations of weak events are one of the promising methods for studying energy release and non-thermal processes in the solar corona. The development of instrumental capabilities allows for radio observations of weak transient coronal events ...
Zhdanov D. A.   +3 more
doaj   +1 more source

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