论文标题
涉及扭结不稳定性和消除通量的同源限制和排出爆发的模型
A Model of Homologous Confined and Ejective Eruptions Involving Kink Instability and Flux Cancellation
论文作者
论文摘要
在这项研究中，我们对一系列受约束和全面喷发进行了建模，采用了扭结不稳定绳索的狭窄喷发的松弛端状态，作为弹出液的初始条件。全部喷发是冠状质量喷射的模型，是由于在光谱边界上施加的融合运动而发展的，该动作驱动了取消通量。在此过程中，正面和负外通量的一部分趋向于极性反转线，重新连接并相互取消。与被取消的通量转移到通量绳相同的通量，增加了冠状场的自由磁能。随着持续的通量取消和相关的渐进性削弱上衣通量的磁张力，我们发现$ \ \！11 \％$的通量减少会引起通量绳的不稳定，这会导致全面爆发。这些结果表明，随着限制性的限制，同源的全爆发可以取消磁通量。
In this study, we model a sequence of a confined and a full eruption, employing the relaxed end state of the confined eruption of a kink-unstable flux rope as the initial condition for the ejective one. The full eruption, a model of a coronal mass ejection, develops as a result of converging motions imposed at the photospheric boundary, which drive flux cancellation. In this process, parts of the positive and negative external flux converge toward the polarity inversion line, reconnect, and cancel each other. Flux of the same amount as the canceled flux transfers to a flux rope, increasing the free magnetic energy of the coronal field. With sustained flux cancellation and the associated progressive weakening of the magnetic tension of the overlying flux, we find that a flux reduction of $\approx\!11\%$ initiates the torus instability of the flux rope, which leads to a full eruption. These results demonstrate that a homologous full eruption, following a confined one, can be driven by flux cancellation.
