论文标题
太阳能耀斑中的色球气泡
Chromospheric Bubbles in Solar Flares
论文作者
论文摘要
我们分析了太阳耀斑的辐射流体动力模拟网格，以研究大气对非热电子束加热的能量平衡和响应。色球气泡的出现是我们在模拟中发现的最显着特征之一。这些染色体等离子体的口袋被颗粒束过热时被困在过渡区域和下部气氛之间。在合成光谱中看到了色球气泡，它是较高多普勒速度高达200 km/s的Balmer线轮廓的附加组件。在CA II 8542A线轮廓的机翼中，它们的签名也可见。这些色球等离子体的气泡是由能量沉积的冲击引起的波沿向上驱动的，需要特定的加热速率和大气位置才能表现出来。
We analyze a grid of radiative hydrodynamic simulations of solar flares to study the energy balance and response of the atmosphere to nonthermal electron beam heating. The appearance of chromospheric bubbles is one of the most notable features that we find in the simulations. These pockets of chromospheric plasma get trapped between the transition region and the lower atmosphere as it is superheated by the particle beam. The chromospheric bubbles are seen in the synthetic spectra, appearing as an additional component to Balmer line profiles with high Doppler velocities as high as 200 km/s. Their signatures are also visible in the wings of Ca II 8542A line profiles. These bubbles of chromospheric plasma are driven upward by a wave front that is induced by the shock of energy deposition, and require a specific heating rate and atmospheric location to manifest.
