INTERFERENCE OF THE RUNNING WAVES AT LIGHT BRIDGES OF A SUNSPOT

CORC > 紫金山天文台 > 中国科学院紫金山天文台 > 太阳和太阳系等离子体研究团组

	INTERFERENCE OF THE RUNNING WAVES AT LIGHT BRIDGES OF A SUNSPOT
	Su, J. T.1; Ji, K. F.2; Banerjee, D.3; Cao, W. D.4; Priya, T. G.1; Zhao, J. S.5; Yu, S. J.1; Ji, H. S.5; Zhang, M.1
刊名	ASTROPHYSICAL JOURNAL
	2016
卷号	816 期号:1
关键词	Sun: chromosphere Sun: magnetic fields Sun: oscillations sunspots Supporting material: animation
英文摘要	The observations of chromospheric oscillations of two umbral light bridges (LBs) within a sunspot from NOAA Active Region 12127 are presented. It was found that the running umbral waves with periods of 2.2-2.6 minutes underwent very fast damping before approaching umbral boundaries, while those with higher periods (>2.6 minutes) could propagate outside umbrae. On two sides of each LB adjacent to umbrae, the cross-wavelet spectra displayed that the oscillations on them had a common significant power region with dominant frequencies of 2-6 minutes and phase differences of similar to 90 degrees. A counterstream of two running umbral waves in the 2-6 minute frequency range propagated toward the LBs, where they encountered each other and gave rise to constructive or even destructive interference on the LBs. In addition, the velocity and density perturbations on the LBs were found in opposite phases suggesting that the perturbations were caused by the downward propagating
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	PENUMBRAL WAVES ; UMBRAL OSCILLATIONS ; CHROMOSPHERIC SUNSPOT ; ASSOCIATION ; PHOTOSPHERE ; DYNAMICS
收录类别	SCI
语种	英语
WOS记录号	WOS:000368225100030
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/16102]
专题	紫金山天文台_太阳和太阳系等离子体研究团组
作者单位	1.Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China 2.Kunming Univ Sci & Technol, Kunming 650093, Peoples R China 3.Indian Inst Astrophys, Bangalore 560034, Karnataka, India 4.Big Bear Solar Observ, Big Bear City, CA 92314 USA 5.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Su, J. T.,Ji, K. F.,Banerjee, D.,et al. INTERFERENCE OF THE RUNNING WAVES AT LIGHT BRIDGES OF A SUNSPOT[J]. ASTROPHYSICAL JOURNAL,2016,816(1).
APA	Su, J. T..,Ji, K. F..,Banerjee, D..,Cao, W. D..,Priya, T. G..,...&Zhang, M..(2016).INTERFERENCE OF THE RUNNING WAVES AT LIGHT BRIDGES OF A SUNSPOT.ASTROPHYSICAL JOURNAL,816(1).
MLA	Su, J. T.,et al."INTERFERENCE OF THE RUNNING WAVES AT LIGHT BRIDGES OF A SUNSPOT".ASTROPHYSICAL JOURNAL 816.1(2016).