论文标题
TranSequorial循环的形成和动力学
Formation and Dynamics of Transequatorial Loops
论文作者
论文摘要
使用成像和光谱学研究跨赤道环（TELS）的动力学演化。我们已经使用了大气成像组件记录的图像和Heliose震动磁成像仪在板载板上的太阳能动力学观测站和光谱观测，从极端粉丝脉冲成像光谱仪在板上HINODE上进行。 AIA193Å频道的数据表明，TELS是在AR 12230和新兴AR 12234之间形成的，并在2014年12月10日至14日在2014年12月12日进化。2014年12月12日的XT图使用AIA193Å的数据显示，揭示了流入和流出X-Region的流入和流出的签名。高节奏AIA图像还显示了与X区（P2）紧密相邻的反复强度增强，该强度的强度增强（P2），观察到在log t [k] = 6.20形成的光谱线的强度较高，并且在其他较高温度下的空隙。 X区（和P2）中的电子密度和温度分别在log n_e = 8.5-8.7 /cc和log t [k] = 6.20处稳定保持。 X区域中的多普勒速度在靠近磁盘中心时，在远离中心时（与零速度的像素）相比，当靠近磁盘中心时，主要的红移速度约为5-8 km/s。 Fe XII，FE XIII和FE XV线的全宽度最大最大马克西马（FWHM）地图显示了约27-30 km/s的非热速度。但是，最明亮的像素的非热速度对于Fe XII和Fe XIII线约为62 km/s。相反，Fe XV线的深色X区具有最高的非热速度（大约115 km/s）。我们得出的结论是，由于磁重新连接而形成了Tels。我们进一步指出，TELS本身会进行磁重新连接，从而导致单个AR的回路改革。此外，这项研究首次提供了X区中血浆参数的测量，从而为理论研究提供了基本的约束。
To study the dynamical evolution of trans-equatorial loops (TELs) using imaging and spectroscopy. We have used the images recorded by the Atmospheric Imaging Assembly and the Helioseismic Magnetic Imager on-board the Solar Dynamics Observatory and spectroscopic observations taken from the Extreme-Ultraviolet Imaging Spectrometer on-board Hinode. The data from AIA 193 Å channel show that TELs are formed between AR 12230 and a newly emerging AR 12234 and evolved during December 10-14, 2014. The xt-plots for December 12, 2014 obtained using AIA 193 Å data reveal signatures of inflow and outflow towards an X-region. High cadence AIA images also show recurrent intensity enhancements in close proximity to the X-region (P2), which is observed to have higher intensities for spectral lines formed at log T[K] =6.20 and voids at other higher temperatures. The electron densities and temperatures in the X-region (and P2) are maintained steadily at log N_e =8.5-8.7 /cc and log T[K] =6.20, respectively. Doppler velocities in the X-region show predominant redshifts by about 5-8 km/s when closer to the disk centre but blueshifts (along with some zero-velocity pixels) when away from the centre. The Full-Width-Half-Maxima (FWHM) maps reveal non-thermal velocities of about 27-30 km/s for Fe XII, Fe XIII and Fe XV lines. However, the brightest pixels have non-thermal velocities of about 62 km/s for Fe XII and Fe XIII lines. On the contrary, the dark X-region for Fe XV line have the highest non-thermal velocity (roughly 115 km/s). We conclude that the TELs are formed due to magnetic reconnection. We further note that the TELs themselves undergo magnetic reconnection leading to reformation of loops of individual ARs. Moreover, this study, for the first time, provides measurements of plasma parameters in X-regions thereby providing essential constraints for theoretical studies.
