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arXiv 1002.1609astro-ph.SR
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太阳核心的动力学

Dynamism in the solar core

Attila Grandpierre

摘要:

最近的结果混合壳模型加热不对称的瞬态增加核燃烧表明,在太阳内部的小热点的瞬态生成0.1和0.2太阳半径之间的某个地方。这些热泡之后,有限振幅的非同源扰动的非线性微分方程系统,在太阳模型中求解。我们的结果表明,太阳核心的动力学现象和大气活动之间的直接联系的可能性。也就是说,大约DQ_0 ~ 10^{31}-10 ^{37}尔格的初始加热足以使气泡到达外对流区。计算结果表明,热气泡可以以10 km s-1的速度进入DQfinal ~ 10^{28} - 10^{34}尔格的亚光球区,接近当地声速。我们指出,发展中的音爆将激波阵面转化为加速粒子束,向上注入由其前沿上方的热泡从太阳内部行进而形成的环的顶部。因此,一个新的角度来解释耀斑能量。我们表明,在太阳色球和日冕耀斑的观测范围内,在光球层的高能深源热气泡产生的粒子束的质量,能量和化学成分。它示出了如何出现一个热泡到subphotospheric地区提供了一个自然的机制,可以产生两个喷发导致耀斑和所观察到的日冕磁拓扑结构的重联。我们展示了我们的模型解释的太阳物理学长期存在的问题。我们提出了一些预测的意见,其中一些计划在不久的将来实现。

英文摘要:

Recent results of a mixed shell model heated asymmetrically by transient increases in nuclear burning indicate the transient generation of small hot spots inside the Sun somewhere between 0.1 and 0.2 solar radii. These hot bubbles are followed by a nonlinear differential equation system with finite amplitude non-homologous perturbations which is solved in a solar model. Our results show the possibility of a direct connection between the dynamic phenomena of the solar core and the atmospheric activity. Namely, an initial heating about DQ_0 ~ 10^{31}-10^{37} ergs can be enough for a bubble to reach the outer convective zone. Our calculations show that a hot bubble can arrive into subphotospheric regions with DQ_final ~ 10^{28} - 10^{34} ergs with a high speed, up to 10 km s-1, approaching the local sound speed. We point out that the developing sonic boom transforms the shock front into accelerated particle beam injected upwards into the top of loop carried out by the hot bubble above its forefront traveling from the solar interior. As a result, a new perspective arises to explain flare energetics. We show that the particle beams generated by energetic deep-origin hot bubbles in the subphotospheric layers have masses, energies, and chemical compositions in the observed range of solar chromospheric and coronal flares. It is shown how the emergence of a hot bubble into subphotospheric regions offers a natural mechanism that can generate both the eruption leading to the flare and the observed coronal magnetic topology for reconnection. We show a list of long-standing problems of solar physics that our model explains. We present some predictions for observations, some of which are planned to be realized in the near future.

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