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ULF Waves Modulating and Acting as Mass Spectrometer for Dayside Ionospheric Outflow Ions

Liu, Z-Y (author)
Peking Univ, Inst Space Phys & Appl Technol, Beijing, Peoples R China.
Zong, Q-G (author)
Peking Univ, Inst Space Phys & Appl Technol, Beijing, Peoples R China.
Zhou, X-Z (author)
Peking Univ, Inst Space Phys & Appl Technol, Beijing, Peoples R China.
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Hao, Y. X. (author)
Peking Univ, Inst Space Phys & Appl Technol, Beijing, Peoples R China.
Yau, A. W. (author)
Univ Calgary, Dept Phys & Astron, Calgary, AB, Canada.
Zhang, H. (author)
Univ Alaska, Geophys Inst, Fairbanks, AK 99701 USA.
Chen, X-R (author)
Peking Univ, Inst Space Phys & Appl Technol, Beijing, Peoples R China.
Fu, S. Y. (author)
Peking Univ, Inst Space Phys & Appl Technol, Beijing, Peoples R China.
Pollock, C. J. (author)
Denali Sci, Fairbanks, AK USA.
Le, G. (author)
NASA, Goddard Space Flight Ctr, Heliophys Sci Div, Greenbelt, MD USA.
Ergun, R. E. (author)
Univ Colorado, Dept Astrophys & Planetary Sci, Boulder, CO 80309 USA.
Lindqvist, Per-Arne (author)
KTH,Rymd- och plasmafysik
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Peking Univ, Inst Space Phys & Appl Technol, Beijing, Peoples R China Univ Calgary, Dept Phys & Astron, Calgary, AB, Canada. (creator_code:org_t)
AMER GEOPHYSICAL UNION, 2019
2019
English.
In: Geophysical Research Letters. - : AMER GEOPHYSICAL UNION. - 0094-8276 .- 1944-8007. ; 46:15, s. 8633-8642
Related links:
https://urn.kb.se/re...
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https://doi.org/10.1...
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • 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.

Subject headings

NATURVETENSKAP  -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)

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