Characterization of type III and IV solar radio bursts from e-CALLISTO

Ansor, N. Mohamad; Hamidi, Zety Sharizat; Shariff, N.N.M.

doi:10.1088/1742-6596/1349/1/012063

Cited by 4 publications

(4 citation statements)

References 15 publications

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“…Statistically, it exhibits a clear maximum of their median radio flux density around 2 MHz in the metric to hectometric wavelength range [20]. SRB type III also is an indicator of the starting point of multiple magnetic reconnection [21], [22] where solar flares are associated [23] which is caused by the motion of plasma and other particles through the convection mechanism inside the Sun [24]. It has been emphasized that the importance of studying SRB type III due to its potential to offer insights into the energy release mechanism in solar flares, given its emission at decametric wavelength and relationship to the active region magnetic field [25], while this implies the same for SRB VI even more because it occurs in longer duration, this new subtype occurs frequently recent and will impact current solar cycle 25 which is climbing to its peak.…”

Section: Introductionmentioning

confidence: 99%

Preliminary analysis for a new sub-type III Solar Radio Burst (Type VI) on 11^th July 2023

Bokhari,

Hamidi,

Shariff

2024

J. Phys.: Conf. Ser.

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We focus on the subcategory Solar Radio Burst Type III (Type VI) events detected on 11th July 2023, exhibiting an extended duration lasting almost 24 hours. Utilizing archival data from the e-CALLISTO network, we analyze the dynamical properties with emphasis on the 11:17-11:30 UTC interval due to their prominent features. The six selected stations recorded a series of well-defined SRB type III features with various intensities. Drift rates were calculated and produced the average absolute value of 1.4 MHz/s for a series burst and 8.2 MHz/s for a single burst, aligning with previous SRB type III drift rate ranges. Solar parameters on that day indicate a quite high range solar wind of 329.9 km/s, high solar coronal density of 6.07 protons/cm3, also high solar flux units in the radio sun measurement correlating with the abundance of sunspots numbers and an elevated peak in solar flare intensity on that month. Direct associations between SRB type VI and solar flares of class C4.5 were observed, while no direct links to Coronal Mass Ejections (CMEs) were identified within that timeframe. This research underscores the importance of understanding SRB type VI characteristics and their associations with solar activities for space weather forecasting.

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Section: Introductionmentioning

confidence: 99%

Preliminary analysis for a new sub-type III Solar Radio Burst (Type VI) on 11^th July 2023

Bokhari,

Hamidi,

Shariff

2024

J. Phys.: Conf. Ser.

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“…Here we present the results of these observations and their calculated burst parameters. Other type III SRBs have also been characterized by relying on similar e-CALLISTO stations (Ansor et al 2019;Hamidi et al 2019Hamidi et al , 2016Ali et al 2016;Ramli et al 2015).…”

Section: Introductionmentioning

confidence: 99%

CALLISTO facilities in Peru: spectrometer commissioning and observations of type III solar radio bursts

Rengifo

Loaiza-Tacuri

Bazo

et al. 2021

Res. Astron. Astrophys.

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The Astrophysics Directorate of CONIDA has installed two radio spectrometer stations belonging to the e-CALLISTO network in Lima, Peru. Given their strategic location near the Equator, it is possible to observe the Sun evenly throughout the whole year. The receiver located at Pucusana, nearby the capital city of Lima, took data from October 2014 until August 2016 in the metric and decimetric bands looking for radio bursts. During this period, this e-CALLISTO detector was unique in its time-zone coverage. To asses the suitability of the sites and the performance of the antennas, we analyzed the radio ambient background and measured their radiation pattern and beamwidth. To demonstrate the capabilities of the facilities for studying solar dynamics in these radio frequencies, we have selected and analyzed type III Solar Radio Bursts. The study of this kind of burst helps to understand the electron beams traversing the solar corona and the solar atmospheric density. We have characterized the most common radio bursts with the following mean values: a negative drift rate of –25.8 ± 3.7 MHz s−1, a duration of 2.6 ± 0.3 s and 35 MHz bandwidth in the frequency range of 114 to 174 MHz. In addition, for some events, it was possible to calculate a global frequency drift which on average was 0.4 ± 0.1 MHz s−1.

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“…Here we show the results of these observations and their calculated burst parameters. Other type III SRBs have also been characterized using similar e-CALLISTO stations ( [6][7][8][9][10]).…”

Section: Introductionmentioning

confidence: 99%

Commissioning of CALLISTO spectrometers in Peru and observations of type III Solar Radio Bursts

Alba¹,

Rengifo²,

Veronica³

et al. 2021

Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021)

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Two radio spectrometer stations belonging to the e-CALLISTO network were installed in Peru by the Astrophysics Directorate of CONIDA. Given their strategic location near the Equator, it was possible to observe the Sun evenly throughout the whole year and the detector was unique in its time-zone coverage. The receiver located nearby the capital city of Lima took data in the metric and decimetric bands looking for radio bursts. To assess the suitability of the sites and the performance of the antennas, we analysed the radio ambient background and measured their radiation pattern and beam-width. To show the capabilities of the facilities to study solar dynamics in these radio frequencies we have selected and analysed type III Solar Radio Bursts. We have characterised the most common radio bursts with the following mean values: a negative drift rate of -25.8 ± 3.7 MHz/s, a duration of 2.6 ± 0.3 s and 35 MHz bandwidth in the frequency range of 114 to 174 MHz. In addition, for some events, it was possible to calculate a global frequency drift, which on average was 0.4 ± 0.1 MHz/s.

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Characterization of type III and IV solar radio bursts from e-CALLISTO

Cited by 4 publications

References 15 publications

Preliminary analysis for a new sub-type III Solar Radio Burst (Type VI) on 11^th July 2023

Preliminary analysis for a new sub-type III Solar Radio Burst (Type VI) on 11^th July 2023

CALLISTO facilities in Peru: spectrometer commissioning and observations of type III solar radio bursts

Commissioning of CALLISTO spectrometers in Peru and observations of type III Solar Radio Bursts

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Characterization of type III and IV solar radio bursts from e-CALLISTO

Cited by 4 publications

References 15 publications

Preliminary analysis for a new sub-type III Solar Radio Burst (Type VI) on 11th July 2023

Preliminary analysis for a new sub-type III Solar Radio Burst (Type VI) on 11th July 2023

CALLISTO facilities in Peru: spectrometer commissioning and observations of type III solar radio bursts

Commissioning of CALLISTO spectrometers in Peru and observations of type III Solar Radio Bursts

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Product

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Preliminary analysis for a new sub-type III Solar Radio Burst (Type VI) on 11^th July 2023

Preliminary analysis for a new sub-type III Solar Radio Burst (Type VI) on 11^th July 2023