The first detection of the solar U+III association with an antenna prototype for the future lunar observatory

Stanislavsky, L. A.; Bubnov, I. N.; Konovalenko, A. A.; Tokarsky, P. L.; Yerin, S. N.

doi:10.1088/1674-4527/21/8/187

Cited by 11 publications

(10 citation statements)

References 29 publications

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“…This type of radio burst was recorded on June 5, 2020. As it has been shown by Stanislavsky et al (2021), this observation gave the first detection of the solar U+III association (Fig. 2).…”

Section: Solar Events and Observationssupporting

confidence: 80%

“…We note that the RSTN observations give similar results, about 83.66 ± 0.26 MHz (see Appendix A). This leads α ≈ 4 (Stanislavsky et al 2021). Then according to the cleaned spectrogram of Fig.…”

Section: Models Of Electron Density In the Solar Coronamentioning

confidence: 98%

“…The main feature of the solar U+J+III association is that the bursts started with ∼84 MHz. This allowed Stanislavsky et al (2021) to adjust the electron density model of solar corona above AR 12765. The point is that the corona of the quiet Sun can be described by the Newkirk (α-fold) model (Newkirk 1961), in which the radial change of the electron density takes the following form:…”

Section: Models Of Electron Density In the Solar Coronamentioning

confidence: 99%

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Parker Solar Probe detects solar radio bursts related with a behind–the–limb active region

Stanislavsky

Bubnov

Koval

et al. 2021

A&A

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Context. The interpretation of solar radio bursts observed by Parker Solar Probe (PSP) in the encounter phase plays a key role in understanding intrinsic properties of the emission mechanism in the solar corona. Lower time–frequency resolution of the PSP receiver can be overcome by simultaneous ground–based observations using more advanced antennas and receivers. Aims. In this paper we present such observations for which the active active region 12 765, begetter of type III, J, and U solar bursts, was within sight of ground–based instruments and behind the solar limb of the PSP spacecraft. Methods. We used a subarray of the Giant Ukrainian Radio Telescope to get the spectral properties of radio bursts at the frequency range of 8–80 MHz, as well as the PSP radio instruments with a bandwidth of 10.5 kHz–19.2 MHz, during solar observations on June 5, 2020. Results. We directly detected the radio events initiated by the active region behind the solar limb of the PSP spacecraft, using special conditions in the solar corona, due to the absence of active regions from the PSP side. Following the generation mechanism of solar radio emission, we refined the density model for the solar corona above the active region 12765 responsible for the radio bursts. Based on the PSP spacecraft position near the Sun and delays of radio waves between space– and ground–based records, we found the corresponding radio responses on the PSP spectrogram. Conclusions. The absence of sunspots from the PSP side contributes to the propagation of radio waves from a dense loop of the Sun to quiet regions with low densities, through which PSP instruments can detect the radiation.

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Section: Solar Events and Observationssupporting

confidence: 80%

Section: Models Of Electron Density In the Solar Coronamentioning

confidence: 98%

Section: Models Of Electron Density In the Solar Coronamentioning

confidence: 99%

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Parker Solar Probe detects solar radio bursts related with a behind–the–limb active region

Stanislavsky

Bubnov

Koval

et al. 2021

A&A

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“…This event was detected by many ground-and space-based radio instruments. These include such as the Nançay Decametric Array (NDA) in France, e-Callisto network stations, STEREO Topic: Sun and Solar Activity A, Wind/WAVES and our radio telescopes [see Stanislavsky et al, 2021]. This means that the Fig.…”

Section: Data Analysis and Resultsmentioning

confidence: 99%

“…Often bipolar magnetic fields on the Sun are responsible for the type U solar radio bursts [Reid and Ratcliffe, 2014]. Such a radio burst was recorded with the GURT on June 5, 2020 [Stanislavsky et al, 2021]. Solar observations on June 5, 2020 were also available with space-based observatories: Wind/WAVES, STEREO-A and PSP.…”

Section: B) Ground-based Radio Telescopesmentioning

confidence: 99%

“Obstanovka” experiment on determining spacecraft surface charging aboard the International Space Station

2021

Тhirteenth Workshop Solar Influences on the Magnetosphere, Ionosphere and Atmosphere

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Aiming at earthquake precursors apportionment the earthquake preparation displays of VARDENIS (Armenia, 29.04.2008, M=3.7) BORISAKHO (Georgia, 09.06.08, M =4.1), NAKHITCEVAN (Azerbaijan, 02.09.2008, M=5.1), earthquakes in time-series have been studied using the geomagnetic and ionosphere tools. Aiming at earthquake forecasting the anomaly in the ionosphere plasma is investigated by a radio-astronomical method. There were received some results, allowing to make out the difference of seismogenic anomalies of ionosphere between the longer anomalies connected to magnetic activity of ionosphere by the method of vertical reconnaissance of ionosphere.

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Validation of F2-layer critical frequency variations in the ionosphere with radio observations of solar bursts

Stanislavsky

Bubnov

Koval

et al. 2023

Journal of Atmospheric and Solar-Terrestrial Physics

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The first detection of the solar U+III association with an antenna prototype for the future lunar observatory

Cited by 11 publications

References 29 publications

Parker Solar Probe detects solar radio bursts related with a behind–the–limb active region

Parker Solar Probe detects solar radio bursts related with a behind–the–limb active region

“Obstanovka” experiment on determining spacecraft surface charging aboard the International Space Station

Validation of F2-layer critical frequency variations in the ionosphere with radio observations of solar bursts

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