Properties of the complex type II burst with rich herringbone structure within 3–33 MHz
Characteristics of the type II burst with “herringbone” structure observed on 7 June 2011 within 3−33 MHz are considered. The burst was recorded both by the two ground-based radiotelescopes (UTR-2, URAN-2) and the spaceborne STEREO radio receivers. For the first time, a detailed statistical analysis...
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Видавничий дім «Академперіодика»
2013
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oai:ri.kharkov.ua:article-11262014-01-12T11:04:47Z Properties of the complex type II burst with rich herringbone structure within 3–33 MHz Свойства сложного всплеска II типа с богатой "елочной" структурой на частотах 3-33 МГц Dorovskyy, V. V. Melnik, V. M. Konovalenko, O. O. Brazhenko, A. I. Panchenko, M. Rucker, H. O. Poedts, S. Stanislavsky, A. A. Mykhaylov, V. A. Characteristics of the type II burst with “herringbone” structure observed on 7 June 2011 within 3−33 MHz are considered. The burst was recorded both by the two ground-based radiotelescopes (UTR-2, URAN-2) and the spaceborne STEREO radio receivers. For the first time, a detailed statistical analysis of main parameters of the herringbone sub-bursts of type II (duration and frequency drift rate) was performed at decameter wavelengths separately for those positively and negatively drifting ones. Another new result within these frequencies is the measured degree of circular polarization of fine structure type II bursts. A fine frequencystructure of the sub-bursts herringbone was found to besimilar to the so-called “fringes” in the solar S-bursts. From the characteristic wave-like oscillations of the type II back-bone the parameters of coronal streamers intersected by the shock wave were derived. Using the observational data from the STEREO and SOHO spacecraft, the speed and direction of the associated CME propagation were detected. From the ground-based radio observations the radial speed of type II burst source was found. As a result, possible location of the type II burst source was determined. In addition, the geoeffectiveness of the discussed solar event was estimated. Рассмотрены характеристики всплеска II типа с “елочной” структурой, который наблюдался 7 июня 2011 г. в полосечастот 3÷33 МГц как наземными радиотелескопами (УТР-2, УРАН-2), так и космическими аппаратами (“СТЕРЕО”).Впервые в декаметровом диапазоне проведен статистический анализ основных параметров субвсплесков “елочной”структуры всплеска II типа (длительности и модуля скорости частотного дрейфа) отдельно для субвсплесковс положительным и отрицательным частотным дрейфом. Впервые также в этом диапазоне выполнена оценка степе-ни круговой поляризации тонкой структуры всплеска II типа. Обнаружена тонкая частотная структура “елочных”субвсплесков, которая по параметрам оказалась близкой к “бахроме”, наблюдающейся у солнечных S-всплесков.По характерному волнообразному изменению частоты “ствола” всплеска определены параметры корональных стри-меров, пересекаемых фронтом ударной волны. По данным наблюдений космических аппаратов “СТЕРЕО” и “СОХО”найдены направление и скорость распространения коронального выброса масс, ответственного за генерацию всплеска.По данным наземных радионаблюдений определена скорость источника всплеска II типа. В результате найдено воз-можное местоположение источника всплеска на фронте ударной волны. Установлена также степень геоэффектив-ности данного солнечного явления. Видавничий дім «Академперіодика» 2013-07-03 Article Article application/pdf http://rpra-journal.org.ua/index.php/ra/article/view/1126 РАДИОФИЗИКА И РАДИОАСТРОНОМИЯ; Vol 18, No 2 (2013); 107 RADIO PHYSICS AND RADIO ASTRONOMY; Vol 18, No 2 (2013); 107 РАДІОФІЗИКА І РАДІОАСТРОНОМІЯ; Vol 18, No 2 (2013); 107 2415-7007 1027-9636 rus http://rpra-journal.org.ua/index.php/ra/article/view/1126/763 |
institution |
Radio physics and radio astronomy |
collection |
OJS |
language |
rus |
format |
Article |
author |
Dorovskyy, V. V. Melnik, V. M. Konovalenko, O. O. Brazhenko, A. I. Panchenko, M. Rucker, H. O. Poedts, S. Stanislavsky, A. A. Mykhaylov, V. A. |
spellingShingle |
Dorovskyy, V. V. Melnik, V. M. Konovalenko, O. O. Brazhenko, A. I. Panchenko, M. Rucker, H. O. Poedts, S. Stanislavsky, A. A. Mykhaylov, V. A. Properties of the complex type II burst with rich herringbone structure within 3–33 MHz |
author_facet |
Dorovskyy, V. V. Melnik, V. M. Konovalenko, O. O. Brazhenko, A. I. Panchenko, M. Rucker, H. O. Poedts, S. Stanislavsky, A. A. Mykhaylov, V. A. |
author_sort |
Dorovskyy, V. V. |
title |
Properties of the complex type II burst with rich herringbone structure within 3–33 MHz |
title_short |
Properties of the complex type II burst with rich herringbone structure within 3–33 MHz |
title_full |
Properties of the complex type II burst with rich herringbone structure within 3–33 MHz |
title_fullStr |
Properties of the complex type II burst with rich herringbone structure within 3–33 MHz |
title_full_unstemmed |
Properties of the complex type II burst with rich herringbone structure within 3–33 MHz |
title_sort |
properties of the complex type ii burst with rich herringbone structure within 3–33 mhz |
title_alt |
Свойства сложного всплеска II типа с богатой "елочной" структурой на частотах 3-33 МГц |
description |
Characteristics of the type II burst with “herringbone” structure observed on 7 June 2011 within 3−33 MHz are considered. The burst was recorded both by the two ground-based radiotelescopes (UTR-2, URAN-2) and the spaceborne STEREO radio receivers. For the first time, a detailed statistical analysis of main parameters of the herringbone sub-bursts of type II (duration and frequency drift rate) was performed at decameter wavelengths separately for those positively and negatively drifting ones. Another new result within these frequencies is the measured degree of circular polarization of fine structure type II bursts. A fine frequencystructure of the sub-bursts herringbone was found to besimilar to the so-called “fringes” in the solar S-bursts. From the characteristic wave-like oscillations of the type II back-bone the parameters of coronal streamers intersected by the shock wave were derived. Using the observational data from the STEREO and SOHO spacecraft, the speed and direction of the associated CME propagation were detected. From the ground-based radio observations the radial speed of type II burst source was found. As a result, possible location of the type II burst source was determined. In addition, the geoeffectiveness of the discussed solar event was estimated. |
publisher |
Видавничий дім «Академперіодика» |
publishDate |
2013 |
url |
http://rpra-journal.org.ua/index.php/ra/article/view/1126 |
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2024-05-26T06:30:28Z |
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2024-05-26T06:30:28Z |
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