сотрудник с 01.01.2015 по настоящее время
Санкт-Петербург, Россия
Институт солнечно-земной физики СО РАН
Великобритания
Санкт-Петербургский филиал Специальной астрофизической обсерватории РАН
Санкт-Петербург, Россия
Иркутск, Россия
В статье представлен обзор современного состояния исследований колебательных процессов в солнечных и звездных вспышках, основанных на наблюдательных данных наземных и космических инструментов с высоким временны́м, пространственным и спектральным разрешением в разных диапазонах электромагнитного спектра. Рассматриваются механизмы генерации вспышечного излучения и его квазипериодической модуляции. Обсуждаются сходство и различие солнечных и звездных вспышек, а также связанные с этим проблемы супервспышек на Солнце и космической погоды. Показано, что квазипериодические пульсации (КПП) вспышечного излучения являются эффективным инструментом диагностики как самих вспышечных процессов, так и параметров тепловой плазмы и ускоренных частиц. Рассматриваются виды КПП, их статистические свойства и методы анализа с учетом нестационарности параметров КПП. Сделан обзор предполагаемых механизмов КПП и открытых вопросов.
Солнце, солнечная активность, солнечные вспышки, звездные вспышки, квазипериодические пульсации
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