| DOI: | 10.1029/2018JA025383
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| Scopus记录号: | 2-s2.0-85046795651
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| 论文题名: | Collisional Heating of Interstellar Helium Flux at 1 AU |
| 作者: | Gruntman M.
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| 刊名: | Journal of Geophysical Research: Space Physics
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| ISSN: | 21699380
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| 出版年: | 2018
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| 卷: | 123, 期:5 | | 起始页码: | 3291
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| 结束页码: | 3298
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| 语种: | 英语
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| 英文关键词: | collisional heating
; elastic collisions
; heliosphere
; helium atom detection
; interstellar helium
; solar wind
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| 英文摘要: | Because of relative motion of the local interstellar medium (LISM) with respect to the Sun, the interstellar wind, interstellar neutral helium atoms enter the heliosphere. Instruments on the Ulysses and Interstellar Boundary Explorer spacecraft measured directional dependencies of intensities, or sky maps, of helium atoms and determined the interstellar wind velocity vector and temperature. The article focuses on heretofore unaccounted for heating of inflowing interstellar helium by elastic collisions with the solar wind ions and its effect on the LISM temperature obtained from the Interstellar Boundary Explorer-type measurement. The calculations show that inferred LISM temperatures appear 175–270 K hotter than the actual interstellar gas due to collisions. ©2018. American Geophysical Union. All Rights Reserved. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/113962
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Department of Astronautical Engineering, Viterbi School of Engineering, University of Southern California, Los Angeles, CA, United States
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| Recommended Citation: | |
Gruntman M.. Collisional Heating of Interstellar Helium Flux at 1 AU[J]. Journal of Geophysical Research: Space Physics,2018-01-01,123(5)
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