Alfven wings in the lunar wake: The role of pressure gradients
文献类型：期刊论文
| 作者 | Zhang, H.1,2; Khurana, K. K.3; Kivelson, M. G.3,4; Fatemi, S.5; Holmstrom, M.6; Angelopoulos, V.3; Jia, Y. D.3; Wan, W. X.1,2; Liu, L. B.1,2; Chen, Y. D.1,2 |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
 |
| 出版日期 | 2016-11-01 |
| 卷号 | 121期号:11页码:10698-10711 |
| DOI | 10.1002/2016JA022360 |
| 文献子类 | Article |
| 英文摘要 | Strongly conducting or magnetized obstacles in a flowing plasma generate structures called Alfven wings, which mediate momentum transfer between the obstacle and the plasma. Nonconducting obstacles such as airless planetary bodies can generate such structures, which, however, have so far been seen only in sub-Alfvenic regime. A novel statistical analysis of simultaneous measurements made by two ARTEMIS satellites, one in the solar wind upstream of the Moon and one in the downstream wake, and comparison of the data with results of a three-dimensional hybrid model of the interaction reveal that the perturbed plasma downstream of the Moon generates Alfven wings in super-Alfvenic solar wind. In the wake region, magnetic field lines bulge toward the Moon and the plasma flows are significantly perturbed. We use the simulation to show that some of the observed bends of the field result from field-aligned currents. The perturbations in the wake thus arise from a combination of compressional and Alfvenic perturbations. Because of the super-Alfvenic background flow of the solar wind, the two Alfven wings fold back to form a small intersection angle. The currents that form the Alfven wing in the wake are driven by both plasma flow deceleration and a gradient of plasma pressure, positive down the wake from the region just downstream of the Moon. Such Alfven wing structures, caused by pressure gradients in the wake and the resulting plasma slowdown, should exist downstream of any nonconducting body in a super-Alfvenic plasma flow. |
| WOS关键词 | MAGNETIC-FIELD ; MHD SIMULATIONS ; IOS INTERACTION ; PLASMA TORUS ; EXPLORER 35 ; SOLAR-WIND ; MOON ; MAGNETOSPHERE ; SPACE |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000390403400003 |
| 资助机构 | National Science Foundation of China(41274171) ; National Science Foundation of China(41274171) ; National Science Foundation of China(41274171) ; National Science Foundation of China(41274171) ; Chinese Academy of Sciences project(KZZD-EW-01-3) ; Chinese Academy of Sciences project(KZZD-EW-01-3) ; Chinese Academy of Sciences project(KZZD-EW-01-3) ; Chinese Academy of Sciences project(KZZD-EW-01-3) ; NASA through THEMIS project(443869-TM-22620) ; NASA through THEMIS project(443869-TM-22620) ; NASA through THEMIS project(443869-TM-22620) ; NASA through THEMIS project(443869-TM-22620) ; NASA through THEMIS/ARTEMIS project(NAS5-02099) ; NASA through THEMIS/ARTEMIS project(NAS5-02099) ; NASA through THEMIS/ARTEMIS project(NAS5-02099) ; NASA through THEMIS/ARTEMIS project(NAS5-02099) ; German Ministry for Economy and Technology ; German Ministry for Economy and Technology ; German Ministry for Economy and Technology ; German Ministry for Economy and Technology ; German Center for Aviation and Space (DLR)(50 OC 0302) ; German Center for Aviation and Space (DLR)(50 OC 0302) ; German Center for Aviation and Space (DLR)(50 OC 0302) ; German Center for Aviation and Space (DLR)(50 OC 0302) ; National Science Foundation of China(41274171) ; National Science Foundation of China(41274171) ; National Science Foundation of China(41274171) ; National Science Foundation of China(41274171) ; Chinese Academy of Sciences project(KZZD-EW-01-3) ; Chinese Academy of Sciences project(KZZD-EW-01-3) ; Chinese Academy of Sciences project(KZZD-EW-01-3) ; Chinese Academy of Sciences project(KZZD-EW-01-3) ; NASA through THEMIS project(443869-TM-22620) ; NASA through THEMIS project(443869-TM-22620) ; NASA through THEMIS project(443869-TM-22620) ; NASA through THEMIS project(443869-TM-22620) ; NASA through THEMIS/ARTEMIS project(NAS5-02099) ; NASA through THEMIS/ARTEMIS project(NAS5-02099) ; NASA through THEMIS/ARTEMIS project(NAS5-02099) ; NASA through THEMIS/ARTEMIS project(NAS5-02099) ; German Ministry for Economy and Technology ; German Ministry for Economy and Technology ; German Ministry for Economy and Technology ; German Ministry for Economy and Technology ; German Center for Aviation and Space (DLR)(50 OC 0302) ; German Center for Aviation and Space (DLR)(50 OC 0302) ; German Center for Aviation and Space (DLR)(50 OC 0302) ; German Center for Aviation and Space (DLR)(50 OC 0302) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/53161]  |
| 专题 | 地质与地球物理研究所_中国科学院地球与行星物理重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China 2.Chinese Acad Sci, Beijing Natl Observ Space Environm, Inst Geol & Geophys, Beijing, Peoples R China 3.Univ Calif Los Angeles, Dept Earth Planetary & Space Sci, Los Angeles, CA USA 4.Univ Michigan, Climate & Atmospheres & Space Sci & Engn Dept, Ann Arbor, MI 48109 USA 5.Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA 6.Swedish Inst Space Phys, Kiruna, Sweden 7.Shangdong Univ Weihai, Sch Space Sci & Phys, Weihai, Peoples R China 8.Beihang Univ, Sch Astronaut, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, H.,Khurana, K. K.,Kivelson, M. G.,et al. Alfven wings in the lunar wake: The role of pressure gradients[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2016,121(11):10698-10711. |
| APA | Zhang, H..,Khurana, K. K..,Kivelson, M. G..,Fatemi, S..,Holmstrom, M..,...&Liu, W. L..(2016).Alfven wings in the lunar wake: The role of pressure gradients.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,121(11),10698-10711. |
| MLA | Zhang, H.,et al."Alfven wings in the lunar wake: The role of pressure gradients".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 121.11(2016):10698-10711. |
入库方式： OAI收割
来源：地质与地球物理研究所
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