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Title: Response of Banded Whistler Mode Waves to the Enhancement of Solar Wind Dynamic Pressure in the Inner Earth's Magnetosphere

Journal Article · · Geophysical Research Letters
DOI:https://doi.org/10.1029/2018GL078849· OSTI ID:1558053
ORCiD logo [1]; ORCiD logo [1];  [2]; ORCiD logo [1];  [3];  [1]; ORCiD logo [4]; ORCiD logo [5]
  1. Wuhan Univ. (China)
  2. Nanchange Univ. (China)
  3. Helmholtz-Zentrum Potsdam (HZP), (Germany). German Research Centre for GeoSciences
  4. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  5. Univ. of Minnesota, Minneapolis, MN (United States)
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With observations of Van Allen Probe A, in this letter we display a typical event where banded whistler waves shifted up their frequencies with frequency bands broadening as a response to the enhancement of solar wind dynamic pressure. Meanwhile, the anisotropy of electrons with energies about several tens of keV was observed to increase. Through the comparison of the calculated wave growth rates and observed wave spectral intensity, we suggest that those banded whistler waves observed with frequencies shifted up and frequency bands broadening could be locally excited by these hot electrons with increased anisotropy. The current study provides a great in situ evidence for the influence on frequencies of banded whistler waves by the enhancement of solar wind dynamic pressures, which reveals the important role of solar wind dynamic pressures playing in the frequency properties of banded whistler waves.

Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
National Aeronautics and Space Administration (NASA); USDOE
Grant/Contract Number:
89233218CNA000001
OSTI ID:
1558053
Report Number(s):
LA-UR-18-29433
Journal Information:
Geophysical Research Letters, Vol. 45, Issue 17; ISSN 0094-8276
Publisher:
American Geophysical UnionCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 5 works
Citation information provided by
Web of Science

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Cited By (1)

Analytical Chorus Wave Model Derived from Van Allen Probe Observations journal February 2019

Figures / Tables (5)

Table 1(p. 24)table Table 1
Table 2(p. 25)table Table 2
Figure 1(p. 26)figure Figure 1
Figure 2(p. 27)figure Figure 2
Figure 3(p. 28)figure Figure 3

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