Eruption of magnetic flux ropes during flux emergence
作者： V Archontis , Tibor Török
DOI: 10.1051/0004-6361:200811131
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摘要: Aims. We investigate the formation of flux ropes in a emergence region and their rise into outer atmosphere Sun. Methods. perform 3D numerical experiments by solving time-dependent resistive MHD equations. Results. A sub-photospheric twisted tube rises from solar interior expands corona. rope is formed within expanding field, due to shearing reconnection field lines at low atmospheric heights. If emerges non-magnetized atmosphere, rises, but remains confined inside magnetized volume. In contrast, if allowed reconnect with pre-existing coronal experiences full eruption profile that qualitative agreement erupting filaments Coronal Mass Ejections.
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