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Интеллектуальная Система Тематического Исследования НАукометрических данных |
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Fast tearing mode driven by demagnetized electronsтезисы доклада Тезисы
- Авторы: Zelenyi Lev, Tsareva Olga, Leonenko Makar, Grigorenko Elena, Malova Helmi, Popov Viktor
- Сборник: Thesis 45th COSPAR Scientific Assembly 2024, 13-24 July 2024, Busan, South Korea
- Серия: Session: Space Plasmas in the Solar System, including Planetary Magnetospheres (D), Magnetic Reconnection in the Turbulent Plasmas - From the Sun through the Heliosphere to Stars and Galaxies (D2.3)
- Тезисы
- Год издания: 2024
- Место издания: 5th COSPAR Scientific Assembly 2024, 13-24 July 2024 Busan, South Korea
- Первая страница: 33357
- Последняя страница: 33357
- Номер статьи: D2.3-0031-24
- Аннотация: Recent MMS observations have discovered electron-scale super-thin current sheets (STCSs) with a partial electron demagnetization, which distinguishes them from the ion-scale TCSs traditionally observed by the Cluster mission. Our investigation focuses on the dynamics of STCSs and reveals new aspects influencing their stability. We use the earlier proposed 1D collisionless self-consistent equilibrium STCS model, the main feature of which is the presence of a population of the demagnetized electrons in a magnetic field with a very small normal component Bn, and show that the free parameters of this model, such as the relative part of demagnetized electrons, their incoming flow velocity and the pressure anisotropy of magnetized electron population, can contribute to the development of tearing instability. With the growth of these parameters, the STCS becomes thinner, which leads to the accumulation excess of a free energy. Stabilizing energy decreases due to the increase of a relative part of demagnetized electrons. Thus, demagnetized electrons in STCSs can provide the development of electron tearing modes, which are an order of magnitude faster and have shorter wavelengths than the ion modes in ion-scale TCSs.
- Добавил в систему: Малова Хельми Витальевна
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | Тезисы COSPAR | D2.3-0031-24-oral.pdf | 62,3 КБ | 11 ноября 2024 [hmalova] |
| 2. | Подтверждение о принятии тезисов | AcceptanceLetter_33357.pdf | 171,1 КБ | 11 ноября 2024 [hmalova] |