Global structure and dynamics of large-scale fluctuations in the solar wind: Voyager 2 observations during 2005 and 2006
文献类型：期刊论文
| 作者 | Burlaga, L. F. ; Ness, N. F. ; Acuna, M. H. ; Wang, Y. M. ; Sheeley, N. R. ; Wang C(王赤) ; Richardson, J. D. |
| 刊名 | Journal of Geophysical Research-Space Physics
 |
| 出版日期 | 2008 |
| 卷号 | 113期号:A2页码:A02104 |
| ISSN号 | 0148-0227 |
| 关键词 | merged interaction region heliospheric magnetic-field outer heliosphere pickup ions interplanetary shocks termination shock cosmic-rays 95 au speed evolution |
| 通讯作者 | 北京8701信箱 |
| 英文摘要 | The Voyager 2 (V2) observations of daily averages of the solar wind during 2005 and 2006 from 75.3 AU to 81.6 AU between approximate to 25.7 degrees S and 27.1 degrees S show both a step-like trend in the speed V(t) and "large-scale fluctuations'' of the magnetic field strength B, speed V, density N and temperature T. The distribution functions of B, N, and NV2 observed by V2 are lognormal and that of V is approximately Gaussian. We introduce a method for specifying the boundary conditions at all latitudes (except near the poles) on a Sun-centered surface of radius of 1 AU, based on solar magnetic field observations. This paper uses only the boundary conditions at the latitude of V2 and a 1-D time-dependent MHD model to calculate the radial evolution of the large-scale fluctuations of B(t), V(t) and N(t) at distances between 1 and 90 AU. This model explains the V2 observations of a lognormal distribution of B and the Gaussian distribution of V, but not the observed lognormal distributions of N and NV2. The lognormal distribution of B observed by V2 was produced primarily by dynamical processes beyond 1 AU. |
| 学科主题 | 空间物理 |
| 收录类别 | SCI |
| 原文出处 | http://www.agu.org/pubs/crossref/2008/2007JA012796.shtml |
| 语种 | 英语 |
| 源URL | [http://ir.cssar.ac.cn/handle/122/1098]  |
| 专题 | 国家空间科学中心_空间科学部 |
| 推荐引用方式 GB/T 7714 | Burlaga, L. F.,Ness, N. F.,Acuna, M. H.,et al. Global structure and dynamics of large-scale fluctuations in the solar wind: Voyager 2 observations during 2005 and 2006[J]. Journal of Geophysical Research-Space Physics,2008,113(A2):A02104. |
| APA | Burlaga, L. F..,Ness, N. F..,Acuna, M. H..,Wang, Y. M..,Sheeley, N. R..,...&Richardson, J. D..(2008).Global structure and dynamics of large-scale fluctuations in the solar wind: Voyager 2 observations during 2005 and 2006.Journal of Geophysical Research-Space Physics,113(A2),A02104. |
| MLA | Burlaga, L. F.,et al."Global structure and dynamics of large-scale fluctuations in the solar wind: Voyager 2 observations during 2005 and 2006".Journal of Geophysical Research-Space Physics 113.A2(2008):A02104. |
入库方式： OAI收割
来源：国家空间科学中心
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