Solnechno-Zemnaya Fizika Solnechno-Zemnaya Fizika Солнечно-земная физика 2712-9640 100182 10.12737/szf-112202501 Результаты исследований Results of current research Результаты исследований Relationship between increasing CME velocity at the initial stage of motion and change in magnetic conditions in the mass ejection generating area Связь нарастания скорости КВМ на начальном этапе движения с изменением магнитных условий в области зарождения выброса массы Файнштейн Виктор Григорьевич Fainshtein Victor Grigorievich vfain@iszf.irk.ru

доктор физико-математических наук;

doctor of physical and mathematical sciences;

 Руденко Георгий Владимирович Rudenko Georgiy Vladimirovich rud@iszf.irk.ru

доктор физико-математических наук;

doctor of physical and mathematical sciences;

 Загайнова Юлия Сергеевна Zagainova Yulia Sergeevna yuliazagainova@mail.ru

кандидат физико-математических наук;

candidate of physical and mathematical sciences;

 Институт солнечно-земной физики СО РАН Иркутск Россия Institute of Solar Terrestrial Physics SB RAS Irkutsk Russian Federation Институт солнечно-земной физики СО РАН Иркутск Россия Institute of Solar Terrestrial Physics SB RAS Irkutsk Russian Federation Институт земного магнетизма, ионосферы и распространения радиоволн им. Н.В. Пушкова РАН Москва, Троицк Россия Pushkov Institute of Terrestrial Magnetism, Ionosphere, and Radio Wave Propagation RAS Moscow, Troitsk Russian Federation 26 06 2025 26 06 2025 11 2 5 14 31 01 2025 15 04 2025 https://zh-szf.ru/en/nauka/article/100182/view

Работа имеет дискуссионный характер, так как опирается на предположения, требующие серьезного экспериментального подтверждения. Сделана попытка связать нарастание скорости коронального выброса массы (КВМ) на начальной стадии его движения с уменьшением свободной магнитной энергии Efree в активной области. Кроме этого, рассмотрено, как для отобранного события меняется магнитная спиральность Mh в активной области. Анализировалось движение относительно энергичного КВМ типа гало (далее гало-КВМ) с кинетической энергией 5.2•1031 эрг, зарегистрированного 26 ноября 2011 г. и связанного со слабой рентгеновской вспышкой балла С1.2. Показано, что в период нарастания со временем Efree и последующего ее спада при увеличении скорости КВМ магнитная спиральность меняется аналогичным образом: при увеличении Efree увеличивается Mh и наоборот. Для сравнения показаны изменения Efree и Mh во время события, связанного с сильной рентгеновской вспышкой балла Х3.1 и не связанного с КВМ. Оказалось, что в этом случае при самом сильном спаде Efree Mh возрастает.

The paper is controversial since it is based on assumptions that require serious experimental confirmation. An attempt has been made to relate an increase in the coronal mass ejection (CME) velocity at the initial stage of its motion with a decrease in the free magnetic energy Efree in the active region. In addition, we have examined how magnetic helicity Mh changes in the active region during the selected event. We have analyzed the motion of relatively energetic halo-type CME (the CME kinetic energy is 5.2•1031 erg) recorded on November 26, 2011 and linked to a C1.2 X-ray flare. It has been shown that when Efree increases with time and decreases with rising CME velocity the magnetic helicity varies in the same way: with increasing Efree, Mh intensifies and vice versa. For comparison, we show Efree and Mh variations during the event related to an X3.1 X-ray flare and unrelated to CME. It turned out that in this case Mh intensifies during the strongest decrease in Efree.

 активная область корональный выброс массы вспышка свободная магнитная энергия магнитная спиральность active region coronal mass ejection flare free magnetic energy magnetic helicity Работа выполнена при финансовой поддержке Министерства науки и Высшего образования РФ The work was financially supported by of the Ministry of Science and Higher Education of the Russian Federation

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