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Propagation of EMIC Waves From Shabansky Orbits in the Dayside Magnetosphere

Journal Article · · Geophysical Research Letters
DOI:https://doi.org/10.1029/2024GL113368· OSTI ID:2514550
 [1];  [2];  [3];  [2];  [4];  [5];  [6];  [7];  [3]
  1. Princeton Plasma Physics Laboratory Princeton University Princeton NJ USA, Department of Physics Andrews University Berrien Springs MI USA
  2. Princeton Plasma Physics Laboratory Princeton University Princeton NJ USA
  3. School of Engineering Andrews University Berrien Springs MI USA
  4. Southwest Research Institute San Antonio TX USA
  5. School of Space Research Kyung Hee University Yongin South Korea
  6. Department of Physics Augsburg University Minneapolis MN USA
  7. New Jersey Institute of Technology Newark NJ USA

Abstract

We explore the characteristics of EMIC waves generated in a non‐dipole, compressed magnetic field at the minimum of the magnetic field. We conducted 2D full‐wave simulations using the Petra‐M code, focusing on a compressed magnetic field in the outer dayside magnetosphere for a range of L values . By comparing the simulation results with MMS observations, we aim to understand how the observed wave characteristics are affected by a shifting source region across different L‐shells. Our findings indicate that the direction of the Poynting vector systematically changes depending on the local source location of the wave, which is consistent with the observations. EMIC waves propagate along the magnetic field line and reach both the northern and southern hemispheres; however, there is a notable difference in the power of EMIC waves between the two hemispheres, indicating seasonal asymmetries in their occurrence.

Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0024369; AC02-09CH11466; AC02-05CH11231
OSTI ID:
2514550
Alternate ID(s):
OSTI ID: 2526683
OSTI ID: 2520533
Journal Information:
Geophysical Research Letters, Journal Name: Geophysical Research Letters Journal Issue: 4 Vol. 52; ISSN 0094-8276
Publisher:
American Geophysical Union (AGU)Copyright Statement
Country of Publication:
United States
Language:
English

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