{"title":"Observation of Type-II and Type-IV Solar Radio Burst Associated with an M-Class Solar Flare and an Impulsive CME","authors":"Syed Zaiful Hamzah, S.N.A, Hamidi, Z. S.","doi":"10.7187/gjatsi062022-5","DOIUrl":null,"url":null,"abstract":"Our study focused on two types of solar radio bursts observed on November 29th, 2020, at 12:54 UT and 12:56 UT, respectively. In addition to seeing the radio burst appear in the spectral dynamic spectrum, measurements of the burst's energy, frequency drift rates, and plasma frequency have been made. Prior to the type II burst, a flare of class M4.44 was detected by the GOES satellite and seen in x-ray flux data. AR 2790 generated the solar flare, but it was hidden behind the southeastern limb of the Sun, so the active region was not visible in the solar disk on November 29th, 2020. As far as solar flare explosions go, this was the biggest in three years since October 20th, 2017, from AR2685. Due to the proximity of these events, it is thought that the solar flare triggered a partial-halo CME at 13:25UT. From the CME’s velocity and flare association, we infer that it is an impulsive CME.","PeriodicalId":12715,"journal":{"name":"global journal al thaqafah","volume":null,"pages":null},"PeriodicalIF":0.1000,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"global journal al thaqafah","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.7187/gjatsi062022-5","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"0","JCRName":"RELIGION","Score":null,"Total":0}
引用次数: 0
Abstract
Our study focused on two types of solar radio bursts observed on November 29th, 2020, at 12:54 UT and 12:56 UT, respectively. In addition to seeing the radio burst appear in the spectral dynamic spectrum, measurements of the burst's energy, frequency drift rates, and plasma frequency have been made. Prior to the type II burst, a flare of class M4.44 was detected by the GOES satellite and seen in x-ray flux data. AR 2790 generated the solar flare, but it was hidden behind the southeastern limb of the Sun, so the active region was not visible in the solar disk on November 29th, 2020. As far as solar flare explosions go, this was the biggest in three years since October 20th, 2017, from AR2685. Due to the proximity of these events, it is thought that the solar flare triggered a partial-halo CME at 13:25UT. From the CME’s velocity and flare association, we infer that it is an impulsive CME.
期刊介绍：
Global Journal Al-Thaqafah (GJAT) is a biannual journal, published by Universiti Sultan Azlan Shah (USAS), Perak, MALAYSIA. This journal is purely academic and peer reviewed. It caters to articles, research notes and reports, and book reviews on diverse topics relating to Islam and the Muslims. This journal is intended to provide an avenue for researchers and academics from all persuasions and traditions to share and discuss differing views, new ideas, theories, research outcomes, and socio-cultural and socio-political issues that impact on and directly or indirectly affect the Muslim World with the sole purpose of making this world a better place to live in. GJAT started in 2011 and was later granted the SCOPUS status in March 2014. Since then, GJAT has published numerous articles and materials from international contributors. GJAT welcomes contributions from all: academics, experts, and professionals. All articles submitted must be original, academic, of high scholarly standard, and meet the strict SCOPUS requirements. GJAT prioritizes articles that discuss fundamental issues and are of global relevance and importance, and publishes all articles that fulfill the basic criteria without prejudice (kindly refer to "Submission and Guidelines"). All decisions by GJAT to publish any article are final.
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