DOI: 10.1002/2016GL070059
论文题名: Altitudinal dependence of meteor radio afterglows measured via optical counterparts
作者: Obenberger K.S. ; Holmes J.M. ; Dowell J.D. ; Schinzel F.K. ; Stovall K. ; Sutton E.K. ; Taylor G.B.
刊名: Geophysical Research Letters
ISSN: 0094-8657
EISSN: 1944-8388
出版年: 2016
卷: 43, 期: 17 起始页码: 8885
结束页码: 8892
语种: 英语
英文关键词: meteors
Scopus关键词: Earth sciences
; Geophysics
; Electron collision
; Electron plasma waves
; Imaging capabilities
; Long wavelength
; Meteors
; Optical camera
; Radio detection
; Radio emission
; Sea level
; altitude
; array
; collision
; electron
; gamma ray radiation
; meteor
; optical method
; plasma
; sea level
; wave damping
; wavelength
英文摘要: Utilizing the all-sky imaging capabilities of the first station of the Long Wavelength Array along with a host of all-sky optical cameras, we have now observed 44 optical meteor counterparts to radio afterglows. Combining these observations, we have determined the geographic positions of all 44 afterglows. Comparing the number of radio detections as a function of altitude above sea level to the number of expected bright meteors, we find a strong altitudinal dependence characterized by a cutoff below ∼90 km, below which no radio emission occurs, despite the fact that many of the observed optical meteors penetrated well below this altitude. This cutoff suggests that wave damping from electron collisions is an important factor for the evolution of radio afterglows. This finding agrees with the hypothesis that the emission is the result of electron plasma wave emission. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84987654238&doi=10.1002%2f2016GL070059&partnerID=40&md5=c1fc9c13c30c25d8fdae725b80c5e839
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9620
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Space Vehicles Directorate, Air Force Research Laboratory, Kirtland AFB, NM, United States
Recommended Citation:
Obenberger K.S.,Holmes J.M.,Dowell J.D.,et al. Altitudinal dependence of meteor radio afterglows measured via optical counterparts[J]. Geophysical Research Letters,2016-01-01,43(17).