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NONLINEAR DAMPING OF ALFVEN WAVES IN THE SOLAR CORONA BELOW 1.5 SOLAR RADII
Zhao, J. S.1,2; Voitenko, Y.3; Guo, Y.4,5; Su, J. T.2; Wu, D. J.1
2015-10-01
发表期刊ASTROPHYSICAL JOURNAL
卷号811期号:2
摘要Nonthermal velocities measured in the solar corona imply a strong damping of upward-propagating low-frequency less than or similar to 0.01 Hz Alfven waves at heliocentric distances from 1.02 to 1.4 solar radii. We propose a vector Alfven wave decay as a feasible mechanism for the observed Alfven wave damping. Contrary to the extensively studied scalar decay, the vector decay does not depend on the wave frequency and can be efficient for low-frequency coronal Alfven waves. We show that the vector decay is much stronger than the scalar decay and can provide the observed damping of 0.01 Hz coronal Alfven waves with perpendicular wavelengths of similar to 10(4) km or less. Fully three-dimensional (3D) numerical simulations are needed to capture this decay, whose growth rate is proportional to the vector product of interacting wave vectors.
文章类型Article
关键词Magnetohydrodynamics (Mhd) Solar Wind Sun: Corona Waves
WOS标题词Science & Technology ; Physical Sciences
DOI10.1088/0004-637X/811/2/88
关键词[WOS]MAGNETOHYDRODYNAMIC TURBULENCE ; WIND ACCELERATION ; LINE WIDTHS ; ENERGY ; HOLES ; PROPAGATION ; PHOTOSPHERE ; SIMULATION ; GENERATION ; FIELDS
收录类别SCI
语种英语
项目资助者Belgian Federal Science Policy Office via the Solar-Terrestrial Centre of Excellence IAP Programme(P7/08 CHARM) ; European Commission(313038 STORM) ; NSFC(11203014 ; MSTC(2011CB811402) ; NSF of Jiangsu Province(BK2012495) ; Key Laboratory of Solar Activity at NAO, CAS(KLSA201501) ; Youth Innovation Promotion Association CAS ; 11303099 ; 11373070 ; 41074107 ; 41531071)
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000363513800016
引用统计
文献类型期刊论文
条目标识符http://libir.pmo.ac.cn/handle/332002/16037
专题太阳和太阳系等离子体研究团组
作者单位1.Chinese Acad Sci, Key Lab Planetary Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
2.Chinese Acad Sci, Key Lab Solar Act, Natl Astron Observ, Beijing 100012, Peoples R China
3.Belgian Inst Space Aeron, Space Phys Div, Solar Terr Ctr Excellence, B-1180 Brussels, Belgium
4.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210046, Jiangsu, Peoples R China
5.Nanjing Univ, Key Lab Modern Astron & Astrophys, Minist Educ, Nanjing 210046, Jiangsu, Peoples R China
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Zhao, J. S.,Voitenko, Y.,Guo, Y.,et al. NONLINEAR DAMPING OF ALFVEN WAVES IN THE SOLAR CORONA BELOW 1.5 SOLAR RADII[J]. ASTROPHYSICAL JOURNAL,2015,811(2).
APA Zhao, J. S.,Voitenko, Y.,Guo, Y.,Su, J. T.,&Wu, D. J..(2015).NONLINEAR DAMPING OF ALFVEN WAVES IN THE SOLAR CORONA BELOW 1.5 SOLAR RADII.ASTROPHYSICAL JOURNAL,811(2).
MLA Zhao, J. S.,et al."NONLINEAR DAMPING OF ALFVEN WAVES IN THE SOLAR CORONA BELOW 1.5 SOLAR RADII".ASTROPHYSICAL JOURNAL 811.2(2015).
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