王新

王新 职称\职位:讲师电子邮箱:wangxinbnu@buaa.edu.cn办公电话:010-82339026 传真:010-82338856 研究领域:太阳风湍流Researchareas: Solarwind turbulence

职称\职位:讲师

电子邮箱:wangxinbnu@buaa.edu.cn

办公电话:010-82339026

传真:010-82338856

 

研究领域:太阳风湍流

Researchareas: Solarwind turbulence

 

学习经历

20099月-20147月,北京大学地球与空间科学学院,空间物理学,博士

20119月-20129月,美国国家大气研究中心,空间物理学,公派留学

20059月-20097月,北京师范大学天文系,天文学,学士

Education :

2009.092014. 07, Ph.D., Space Physics, PekingUniversity, China

2011.092012. 09, Joint student, SpacePhysics, National Center for Atmospheric Research, US

2005.092009. 07, M.S., Astronomy, BeijingNormal University, China

 

工作经历

20147月-20164月,北京大学,博士后

ProfessionalExperience:

2014.072016.04, Peking University, Postdoc

 

科研成果

太阳风湍流被认为是太阳风加热的能源,是影响对空间飞行有伤害作用的日球层高能粒子传播的媒介。然而,太阳风湍流的本质仍不清楚,其核心的研究课题是能量串级机制。太阳风湍流谱各向异性现象目前被认为表征太阳风湍流存在“临界平衡串级”。可是,我们发现间歇强度对谱各向异性程度有控制作用。利用WINDUlyssesStereo等卫星高时间分辨率的等离子体和磁场数据,我们研究了太阳风高速流中小尺度间歇结构的本质及其加热效应和对湍流谱各向异性的影响,主要发现包括:1. 太风湍流小尺度(24秒)磁场间歇结构主要是旋转间断面类型的结构,只在极少数情况下是切向间断面类型的结构。这一工作纠正了磁流体湍流数值模拟中认为切向间断面类型的电流片是主要的磁场间歇结构的看法。2. 切向间断面类型间歇结构伴随有局地质子温度的升高,而旋转间断面类型的结构则没有。由于切向间断面类型的间歇结构只占磁场间歇结构的极少数,因此,统计来说磁场间歇结构对太阳风的加热效应并不明显。这一结果纠正了一些文章关于磁场间歇结构是太阳风加热的主要来源的错误认识。3. 磁场间歇结构控制磁场谱的各向异性特征,且太阳风湍流中没有支持临界平衡串级理论的观测证据,从而质疑了学术界的流行观点:认为功率谱的各向异性表明太阳风中存在临界平衡串级过程,为谱各向异性的起源提出了新的可能性,开辟了太阳风湍流串级机制研究的新方向。

文章列表

  1. Xin Wang, Chuanyi Tu*,Eckart Marsch, Jiansen He, Linghua Wang, Scale-dependent normalized amplitudeand weak spectral anisotropy of magnetic field fluctuations in the solar windturbulence, Astrophys. J., 2016, 816: 15

  2. Xin Wang*,Chuanyi Tu, Jiansen He, Eckart Marsch, Linghua Wang, Chadi Salem, The SpectralFeatures of Low-amplitude Magnetic Fluctuations in the Solar Wind and TheirComparison with Moderate-amplitude Fluctuations, Astrophys. J., 2015, 810, L21

  3. Xin Wang, Chuanyi Tu,Linghua Wang*, Jiansen He, Eckart Marsch, The Upstream-propagatingAlfvénic Fluctuations with Power LawSpectra in the Upstream Region of the Earth's Bow Shock, Geophys. Res. Lett.,2015, 42, 3654-3661

  4. Xin Wang, Chuanyi Tu*,Jiansen He, Eckart Marsch, Linghua Wang, The Influence of Intermittency on theSpectral Anisotropy of Solar Wind Turbulence, Astrophys. J., 2014, 783, L9

  5. Xin Wang, Chuanyi Tu*,Jiansen He, Eckart Marsch, Linghua Wang, On Intermittent Turbulence Heating ofthe Solar Wind: Differences between Tangential and Rotational Discontinuities,Astrophys. J., 2013, 772, L14

  6. Xin Wang*,Scott W. McIntosh, Werner Curdt, Hui Tian, Hardi Peter, Lidong Xia, TemperatureDependence of Ultraviolet Line Parameters in Network and Internetwork Regionsof the Quiet Sun and Coronal Holes, Astron. Astrophys., 2013, 557, A126

  7. Xin Wang*,Jiansen He, Chuanyi Tu, Eckart Marsch, Lei Zhang, Jih-Kwin Chao, Largeamplitude Alfven Wave in Interplanetary Space, Astrophys. J., 2012, 746, 147

  8. Zhongtian Pei, Jiansen He*,Xin Wang, Chuanyi Tu, Eckart Marsch, Linghua Wang, Limei Yan, Influenceof intermittency on the anisotropy of magnetic structure functions of solarwind turbulence, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2016, 121, 2,911-924

  9. Limei Yan, Jiansen He*, LeiZhang, Chuanyi Tu, Eckart Marsch, Christopher H. K. Chen, Xin Wang,Linghua Wang, Robert T. Wicks, Spectral anisotropy of Elsasser variables intwo-dimensional wave-vector space as observed in the fast solar windturbulence, Astrophys. J., 2016, 816, L24

  10. Lei Zhang, Jiansen He*,Chuanyi Tu, Liping Yang, Xin Wang, Eckart Marsch, Linghua Wang,Occurrence Rates and Heating Effects of Tangential and RotationalDiscontinuiteies as Obtained from Three-dimensional Simulation ofMagneohydrodynamic Turbulence, Astrophys. J., 2015, 804, L43

  11. Liping Yang, Lei Zhang,Jiansen He*, Chuanyi Tu, Linghua Wang, Eckart Marsch, Xin Wang,Shaohua Zhang, Xueshang Feng, The Formation of Rotational Discontinuities inCompressive Three-dimensional MHD Turbulence, Astrophys. J., 2015, 809, 155

  12. Jingbo Zhang, Jiansen He*,Limei Yan, Chuanyi Tu, Linghua Wang, Xin Wang, Plasma Draining andreplenishing near a solar active region inferred from cross-correlation betweenradiation intensity and Doppler shift, Science China-Earth Sciences, 2015, 58,5, 830

  13. Scott W. McIntosh, Xin Wang,Robert J. Leamon, Philip H. Scherrer, Identifying Potential Markers of theSun’s Giant Convective Scale, Astrophys. J., 2014, 784, L32

  14. Scott W. McIntosh, Xin Wang,Robert J. Leamon et al., Deciphering Solar Magnetic Activity. I. On theRelationship between the Sunspot Cycle and the Evolution of Small MagneticFeatures, Astrophys. J., 2014, 792, 12

  15. Hui Tian, Scott W. McIntosh,Lidong Xia, Jiansen He, Xin Wang, What can We Learn about Solar CoronalMass Ejections, Coronal Dimmings, and Extreme-ultraviolet Jets throughSpectroscopic Observations? Astrophys. J., 2012, 748, 106

  16. Hui Tian, Scott W. McIntosh,Bart De Pontieu, Juan Martínez-Sykora, Marybeth Sechler, Xin Wang, TwoComponents of the Solar Coronal Emission Revealed by EUV SpectroscopicObservations, Astrophys. J., 2011, 738, 18

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