Predicting the arrival time of CME associated with type-II radio burst using neural networks technique

Nedal, Mohamed; Mahrous, A.; Youssef, Mohamed

doi:10.1007/s10509-019-3651-8

Cited by 6 publications

(4 citation statements)

References 46 publications

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“…The mean and median are 1.49 Rs and 1.47 Rs, respectively. The range of shock height obtained in the study conforms with the ranges reported in previous studies (see Gopalswamy et al, 2012;Gopalswamy et al, 2013;Vasanth et al, 2014;Kishore et al, 2016;Kumari et al, 2019;Nedal et al, 2019;Umuhire et al, 2021a;Umuhire et al, 2021b). Panel (c) of Fig.…”

Section: Observations Analyses and Case Studiessupporting

confidence: 90%

Solar radio bursts observations by Egypt- Alexandria CALLISTO spectrometer: First results

Minta

Nozawa

Kozarev

et al. 2023

Advances in Space Research

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Section: Observations Analyses and Case Studiessupporting

confidence: 90%

Solar radio bursts observations by Egypt- Alexandria CALLISTO spectrometer: First results

Minta

Nozawa

Kozarev

et al. 2023

Advances in Space Research

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“…2 shows a dynamic spectrum of a low starting frequency type II sourced from DARO CALLISTO station-Germany in the e-CALLISTO network 4 . The event occurred on May 2, 2013, between 05:06 UT and 05:22 UT (see Nedal et al, 2019;Lata Soni et al, 2021). It was denoised by removing the background to mitigate radio frequency interferences (RFIs) to enhance the spectrum.…”

Section: Type II Radio Burstsmentioning

confidence: 99%

Assessing the spectral characteristics of band splitting type II radio bursts observed by CALLISTO spectrometers

Minta

Nozawa

Kozarev

et al. 2023

Advances in Space Research

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“…This bursts is associated with a X1.1 flare that started at 03:17 UT and stopped at 03:51 UT from NOAA active region 12994. The values of BDW were used to estimate the density jump across the shock (e.g., Vršnak et al, 2001Vršnak et al, , 2002Cho et al, 2007;Nedal et al, 2019), χ via the relation…”

Section: Derivation Of Shock Characteristic Parametersmentioning

confidence: 99%

An Overview of Solar Radio Type II Bursts through analysis of associated solar and near Earth space weather features during Ascending phase of SC 25

Ndacyayisenga

Uwamahoro

Rabiu

et al. 2023

Preprint

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Abstract. Type II solar radio bursts are the signatures of particle acceleration caused by shock waves in the solar atmosphere and interplanetary space. Being electromagnetic radiation that travel at the speed of light, they can serve as ground observed data to provide early notice of incoming solar storm disturbances. An observational overview of 31 Type II bursts which occurred in the period between May 2021 to December 2022 is made. We analyzed associated parameters such as bandwidth, drift rates, starting frequency to evaluate their dynamical parameters such as the shock and Alfvén speeds to estimate the Alfvén Mach number as well as the coronal magnetic field strength using Rankine-Hugoniot relation. We also evaluated accompanying space weather implication in terms of ionospheric total electron content (TEC) enhancement. At heliocentric distance ∼ 1−2 R⊙, the shock and the Alfvén speeds are in the range 504–1301 km s−1 and 368–837 km s−1, respectively. The Alfvén Mach number is of the order of 1.2 ≤ MA ≤ 1.8 at the same heliocentric distance, and the magnetic field strength shows excellent consistency and could be fit with a single power-law distribution of the type B(r) = 6.56 r −3.92 G. The study finds that 15/31 type II radio bursts are associated with some aspects of space weather such as radio blackouts and/or polar cap absorption events, that are the signature of solar proton enhancement and solar energetic particle events. Observed and analyzed Type II events correlated well with observed ionospheric storm indicated by the TEC enhancement. The findings from this study indicate that through analysis of type II SRBs observed from the ground and their physical features characteristics, it is possible to monitor the current progress of solar cycle 25 and predict the intensity of associated space weather phenomena.

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Predicting the arrival time of CME associated with type-II radio burst using neural networks technique

Cited by 6 publications

References 46 publications

Solar radio bursts observations by Egypt- Alexandria CALLISTO spectrometer: First results

Solar radio bursts observations by Egypt- Alexandria CALLISTO spectrometer: First results

Assessing the spectral characteristics of band splitting type II radio bursts observed by CALLISTO spectrometers

An Overview of Solar Radio Type II Bursts through analysis of associated solar and near Earth space weather features during Ascending phase of SC 25

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