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arXiv 2007.12301astro-ph.SR
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一个小灯丝的爆发如何将材料输送到附近的大尺度灯丝

How eruptions of a small filament feed materials to a nearby larger-scaled filament

Hengyuan Wei, Zhenghua Huang, Zhenyong Hou, Youqian Qi, Hui Fu, Bo Li, Lidong Xia

摘要:

暗条是太阳大气中最常见的特征之一,它不仅在太阳物理中有重要的意义,而且在恒星物理和实验室等离子体物理中也有重要的意义。利用新真空太阳望远镜和太阳动力学天文台,我们在这里报告了一个小的(30 \arcsec)灯丝(SF)的喷发的多波长观测及其后果,同时与环境磁特征,包括一个大的(300 \arcsec)灯丝(LF)相互作用。SF的喷发驱动一个双侧环喷流,这是SF丝和上覆磁通道之间的磁重联的结果。作为喷发的结果,SF足点的加热破坏了附近LF的倒钩。然后在\halpha通带中观察到沿LF倒钩的超音速色球等离子体流,它们显然向LF馈送材料。我们认为它们是激波驱动的等离子体流或色球蒸发,这两者都可能是与双侧环喷流相关的磁重联中产生的非热粒子加热色球的结果。我们的观察表明,在附近的倒钩的足点的不稳定性可以驱动色球等离子体喂养的灯丝。

英文摘要:

As one of the most common features in the solar atmosphere, filaments are significant not only in the solar physics but also in the stellar and laboratory plasma physics. With the New Vacuum Solar Telescope and the Solar Dynamics Observatory, here we report on multi-wavelength observations of eruptions of a small (30\arcsec) filament (SF) and its consequences while interacting with the ambient magnetic features including a large (300\arcsec) filament (LF). The eruptions of the SF drive a two-side-loop jet that is a result of magnetic reconnection between the SF threads and an over-lying magnetic channel. As a consequence of the eruption, the heating in the footpoints of the SF destabilises the barbs of the LF rooted nearby. Supersonic chromospheric plasma flows along the barbs of the LF are then observed in the \halpha\ passband and they apparently feed materials to the LF. We suggest they are shock-driven plasma flows or chromospheric evaporations, which both can be the consequences of the heating in the chromosphere by nonthermal particles generated in the magnetic reconnection associated with the two-side-loop jet. Our observations demonstrate that the destabilisation in the vicinity of the footpoints of a barb can drive chromospheric plasma feeding to the filament.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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