太阳内部的微分旋转和动力学
1M. J. Thompson and R. Howe are in the Astronomy Unit, Queen Mary and Westfield College, University of London, Mile End Road, London E1 4NS, UK. J. Toomre, M. DeRosa, and D. A. Haber are at the Joint Institute for Laboratory Astrophysics, University of Colorado, Boulder, CO 80309-0440, USA. E. R. Anderson, J. W. Harvey, F. Hill, and J. W. Leibacher are at the National Solar Observatory (NSO), National Optical Astronomy Observatories (NOAO), Post Office Box 26732, Tucson, AZ 85726-6732, USA. H. M. Antia and S. M. Chitre are at the Tata Institute of Fundamental Research, Bombay 400005, India. G. Berthomieu, T. Corbard, and J. Provost are at the Observatoire de la Cote d'Azur, 06304 Nice Cedex 4, France. D. Burtonclay and P. R. Wilson are in the School of Mathematics, University of Sydney, Sydney, NSW 2006, Australia. J. Christensen-Dalsgaard and F. P. Pijpers are at the Theoretical Astrophysics Center, Aarhus University, DK-8000 Aarhus C, Denmark. C. R. Genovese is in the Department of Statistics, Carnegie Mellon University, Pittsburgh, PA 15213, USA. D. O. Gough and T. Sekii are in the Institute of Astronomy, University of Cambridge, Cambridge CB3 0HA, UK. S. G. Korzennik is at the Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA. A. G. Kosovichev and J. Schou are at Hansen Experimental Physics Laboratory Annex, Stanford University, Stanford, CA 94305-4085, USA. E. J. Rhodes Jr. is in the Department of Physics and Astronomy, University of Southern California, Los Angeles, CA 90089, USA. P. B. Stark is in the Department of Statistics, University of California, Berkeley, CA 94720-3860, USA.
全球振荡频率揭示了太阳内部的旋转. 观测表明,表面依赖度的旋转延伸到对流区,表面附近有一个明显的剪切层.
科学领域:
- 太阳地震学 (Helioseismology) 是一个关于太阳的学科.
- 太阳物理 太阳物理
- 太阳内部动力学 太阳内部动力学
背景情况:
- 太阳的旋转随着度和深度而变化.
- 了解内部旋转是太阳能发电机模型的关键.
- 全球振荡频率受到内部流动的影响.
研究的目的:
- 用频率分割来研究太阳内部旋转.
- 用半径和度来映射旋转变化的变化.
- 为了分析太阳旋转的结构.
主要方法:
- 从全球振荡网络集团 (GONG) 数据中分析全球振荡频率.
- 利用来自几乎不间断的观测的高质量振荡功率光谱.
- 导出频率分割以推断内部旋转速率.
主要成果:
- 证实太阳表面的依赖度的旋转延伸到对流区的大部分区域.
- 确定了在对流区底部的一个调整层,在那里旋转变得在度上独立.
- 在太阳旋转中检测到一个明显的剪切层,在低至中度的表面下方.
结论:
- 太阳内部的旋转是复杂的,有不同的层和过渡.
- 这些发现为太阳能发电机和室内模型提供了关键数据.
- 太阳地震学为探测太阳的内部结构和动态提供了一个强大的工具.
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