太阳上的钙亮结与色球海葵状喷流的形成
Calcium bright knots and the formation of chromospheric anemone jets on the Sun
AI总结:
本文利用三维磁流体力学模拟提出色球喷流新模型,揭示了小尺度扭曲磁通量绳持续上升驱动磁重联并发射喷流,为色球海葵状喷流及纳耀斑的形成提供了普遍机制。
摘要:
基于太空的观测表明,从太阳色球到日冕的太阳大气中充满了小尺度喷流,并与小尺度爆炸相关。这些喷流可能由类似于大尺度耀斑的机制产生,并且可能与日冕和色球的加热以及太阳风的加速有关。太阳上的色球海葵状喷流仍然令人困惑,因为它们的足点(或亮结)尚未被很好地分辨,而且这种神秘的小尺度喷流的形成过程仍不清楚。我们利用三维磁流体力学(MHD)模拟提出了一个色球喷流的新模型,该模型表明,在磁化的太阳色球中,小尺度扭曲磁通量绳的持续上升驱动了小尺度磁重联,并在色球海葵状喷流的演化过程中发射了数个小尺度喷流。我们对磁化太阳大气中小尺度但不断变化的通量绳涌现进行的全新的、自洽的三维计算机建模与观测完全一致,并为纳耀斑和喷流的形成提供了一种普遍机制。
英文摘要:
Space-based observations show that the solar atmosphere from the solar chromosphere to the solar corona is filled with small-scale jets and is linked with small-scale explosions. These jets may be produced by mechanisms similar to that of large-scale flares and such jets may be related to the heating of corona and chromosphere as well as the acceleration of solar wind. The chromospheric anemone jets on the Sun remain puzzling because their footpoints (or bright knots) have not been well resolved and the formation process of such enigmatic small-scale jets remains unclear. We propose a new model for chromospheric jets using the three-dimensional magnetohydrodynamic (MHD) simulations, which show that the continuous, upward rising of small-scale twisted magnetic flux ropes in a magnetized solar chromosphere drive small-scale magnetic reconnection and the launching of several small-scale jets during the evolution of the chromospheric anemone jets. Our new, self-consistent, three-dimensional computer modeling of small-scale, but ever-changing flux rope emergence in the magnetized solar atmosphere is fully consistent with observations and provides a universal mechanism for nanoflare and jet formation.
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。