arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 0909.0027astro-ph.SR
收藏

来自地面和太空的肢体骨针

Limb Spicules from the Ground and from Space

Jay M. Pasachoff, William A. Jacobson, Alphonse C. Sterling

摘要:

我们收集了统计数据,安静的太阳色球针状物在肢体使用地面观测瑞典1米太阳望远镜在拉帕尔马,同时从美国宇航局的过渡区和日冕探测器(TRACE)航天器。2006年7月获得了观察结果。利用多目标多帧盲解卷积(MOMFBD)程序最大化地面分辨率后获得的0.2角秒分辨率,我们获得了二十多个单独针状体的大小和运动的具体统计数据,基于以50秒节奏编辑的一系列五个波长的电影,这些波长在H α的一个非常窄的波段中观察到,在0.035 nm和0.070 nm(每个波长10 s)处使用SOUP滤波器在带内以及红色和蓝色翼中进行测量,并在来自TRACE的160 nm EUV连续谱中进行同时观察。MOMFBD恢复还自动对齐图像,便于在每个带外对制作多普勒图。我们研究了40个H-α针状体和14个与H-α针状体重叠的EUV针状体;我们发现它们的动力学和形态学特性符合先前几项研究的框架。从一个初步的比较与骨针理论,我们的观察是一致的骨针产生的重连机制,并与UV骨针周围的H-α骨针鞘区。

英文摘要:

We amassed statistics for quiet-sun chromosphere spicules at the limb using ground-based observations from the Swedish 1-m Solar Telescope on La Palma and simultaneously from NASA's Transition Region and Coronal Explorer (TRACE) spacecraft. The observations were obtained in July 2006. With the 0.2 arcsecond resolution obtained after maximizing the ground-based resolution with the Multi-Object Multi-Frame Blind Deconvolution (MOMFBD) program, we obtained specific statistics for sizes and motions of over two dozen individual spicules, based on movies compiled at 50-second cadence for the series of five wavelengths observed in a very narrow band at H-alpha, on-band and in the red and blue wings at 0.035 nm and 0.070 nm (10 s at each wavelength) using the SOUP filter, and had simultaneous observations in the 160 nm EUV continuum from TRACE. The MOMFBD restoration also automatically aligned the images, facilitating the making of Dopplergrams at each off-band pair. We studied 40 H-alpha spicules, and 14 EUV spicules that overlapped H-alpha spicules; we found that their dynamical and morphological properties fit into the framework of several previous studies. From a preliminary comparison with spicule theories, our observations are consistent with a reconnection mechanism for spicule generation, and with UV spicules being a sheath region surrounding the H-alpha spicules.

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。

↑