Results 1 to 10 of about 1,264 (121)
Multiwave Siberian Radioheliograph
Solar-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
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A New Image Restoration Method for MUSER
Advances in Astronomy, 2019 Solar radio images in decimeter wave range consist of many complicated components including a disk component, some bright and weak compact sources, and many diffuse features.
Wei Wang, Yihua Yan
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MEASUREMENT OF SIBERIAN RADIOHELIOGRAPH CABLE DELAYS
Solar-Terrestrial Physics, 2021 To achieve the maximum dynamic range of solar radio images obtained using aperture synthesis in relatively wide frequency bands 0.1−0.5 % of the operating frequency, it is necessary to compensate the signal propagation delays in the antenna receive path ...
S.V. Lesovoi, M.V. Globa
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CALIBRATION OF SIBERIAN RADIOHELIOGRAPH IMAGES
Solar-Terrestrial Physics, 2019 We discuss the method for automatic calibration of solar radio images derived from the first stage of the multiwave Siberian Radioheliograph (SRH-48). SRH is a 48-element T-shaped radiointerferometer in the 4–8 GHz frequency range. Since the end of 2017,
Fedotova A.Yu. +4 more
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CALIBRATION OF SIBERIAN RADIOHELIOGRAPH ANTENNA GAINS USING REDUNDANCY
Solar-Terrestrial Physics, 2021 The paper describes application of standard gain calibration using redundancy for a 48-antenna prototype of Siberian Radioheliograph. Traditionally, for calibration, the visibilities were measured only between adjacent antennas since they have the ...
M.V. Globa, S.V. Lesovoi
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Over seven decades of solar microwave data obtained with Toyokawa and Nobeyama Radio Polarimeters
Geoscience Data Journal, Volume 10, Issue 1, Page 114-129, January 2023., 2023 Upper left: Toyokawa Radio Polarimeter (ToRP: Behnde) and 8‐element solar grating array (Front). Upper Right: Nobeyama Radio Polarimeter (NoRP). Lower: Long‐term variation of microwave fluxes (colors) and sunspot (black) from the 1950s to 2021. Abstract Monitoring observations of solar microwave fluxes and their polarization began in Japan during the ...
Masumi Shimojo, Kazumasa Iwai
wiley +1 more source
Mingantu Spectral Radioheliograph for Solar and Space Weather Studies
Frontiers in Astronomy and Space Sciences, 2021 The Chinese Spectral Radioheliograph (CSRH) covering 400 MHz-15 GHz frequency range was constructed during 2009–2016 in Mingantu Observing Station, National Astronomical Observatories, Chinese Academy of Sciences at Zhengxiangbaiqi, Inner Mongolia of ...
Yihua Yan +12 more
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Solar-Terrestrial Physics, 2021 We analyze the presence of a microwave neutral-line-associated source (NLS) in a super-active region NOAA 12673, which produced a number of geo-effective events in September 2017.
A.V. Kudriavtseva +3 more
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Earth and Space Science, Volume 7, Issue 3, March 2020., 2020 Abstract Solar prominences are structures of importance because of their role in polar field reversal. We study the long‐term variation of the time latitude distribution of solar prominences in this article. To accomplish this, we primarily used the digitized disc‐blocked Ca II K spectroheliograms as recorded from Kodaikanal Solar Observatory for the ...
Subhamoy Chatterjee +4 more
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Fine Structure of Solar Metric Radio Bursts: ARTEMIS-IV/JLS and NRH Observations
Universe, 2023 Radio bursts provide important diagnostics of energetic phenomena of the Sun. In particular, bursts in decimetric and metric wavelengths probe the physical conditions and the energy release processes in the low corona as well as their association with ...
Costas Alissandrakis +3 more
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