Sunquakes: helioseismic response to solar flares
Sunquakes: helioseismic response to solar flares
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DOI：
10.1017/cbo9781107300668.025
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发表时间：
2014-02
期刊：
影响因子：
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通讯作者：
A. Kosovichev
中科院分区：
文献类型：
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作者：
A. Kosovichev
在太阳耀斑期间，以太阳表面上的膨胀波波纹形式观察到的太阳地震代表了耀斑冲击激发的声波包，并穿过太阳内部。激发碰撞与脉冲耀斑相位密切相关，是由能量释放点输送的能量和动量引起的。耀斑能量以高能粒子、波、质量运动和辐射的形式释放。然而，产生日震的局部流体动力学影响的确切机制尚不清楚。解决太阳震动机制的问题将大大提高我们对耀斑物理的理解。此外，太阳地震提供了一个独特的机会，研究相互作用的声波与磁场和流动的耀斑活动区，并制定新的方法，日震声层析成像。
Sunquakes observed in the form of expanding wave ripples on the surface of the Sun during solar flares represent packets of acoustic waves excited by flare impacts and traveling through the solar interior. The excitation impacts strongly correlate with the impulsive flare phase, and are caused by the energy and momentum transported from the energy release sites. The flare energy is released in the form of energetic particles, waves, mass motions, and radiation. However, the exact mechanism of the localized hydrodynamic impacts which generate sunquakes is unknown. Solving the problem of the sunquake mechanism will substantially improve our understanding of the flare physics. In addition, sunquakes offer a unique opportunity for studying the interaction of acoustic waves with magnetic fields and flows in flaring active regions, and for developing new approaches to helioseismic acoustic tomography.