ULF Waves Modulating and Acting as Mass Spectrometer for Dayside Ionospheric Outflow Ions
| Title: | ULF Waves Modulating and Acting as Mass Spectrometer for Dayside Ionospheric Outflow Ions |
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| Authors: | Z.‐Y. Liu, Q.‐G. Zong, X.‐Z. Zhou, Y. X. Hao, A. W. Yau, H. Zhang, X.‐R. Chen, S. Y. Fu, C. J. Pollock, G. Le, R. E. Ergun, P.‐A. Lindqvist |
| Source: | Geophysical Research Letters, Vol 46, Iss 15, Pp 8633-8642 (2019) |
| Publisher Information: | Wiley, 2019. |
| Publication Year: | 2019 |
| Collection: | LCC:Geophysics. Cosmic physics |
| Subject Terms: | ionospheric outflow ions, ultralow frequency waves, wave‐particle interaction, mass spectrometer effect, acceleration of oxygen ions, polarization drift, Geophysics. Cosmic physics, QC801-809 |
| More Details: | Abstract Ionospheric outflow has been shown to be a dominant ion source of Earth's magnetosphere. However, most studies in the literature are about ionospheric outflow injected into the nightside magnetosphere. We still know little about ionospheric outflow injected into the dayside magnetosphere and its further energization after it enters the magnetosphere. Here, with data from Magnetospheric Multiscale mission, we report direct observations of the modulation of dayside ionospheric outflow ions by ultralow frequency (ULF) waves. The observations indicate that the modulation is mass dependent, which demonstrates the possibility of using ULF waves as a mass spectrometer to identify ion species. Moreover, the measurement suggests that polarization drift may play a role in O+ modulation, which may lead to a true acceleration and even nonadiabatic behavior of O+. This interaction scenario can work throughout the whole magnetosphere and impact upon the plasma environment and dynamics. |
| Document Type: | article |
| File Description: | electronic resource |
| Language: | English |
| ISSN: | 1944-8007 0094-8276 |
| Relation: | https://doaj.org/toc/0094-8276; https://doaj.org/toc/1944-8007 |
| DOI: | 10.1029/2019GL083849 |
| Access URL: | https://doaj.org/article/3750d29701ea405b807376f8fa33bf89 |
| Accession Number: | edsdoj.3750d29701ea405b807376f8fa33bf89 |
| Database: | Directory of Open Access Journals |
| ISSN: | 19448007 00948276 |
|---|---|
| DOI: | 10.1029/2019GL083849 |
| Published in: | Geophysical Research Letters |
| Language: | English |