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Title: X-ray imaging of Kelvin-Helmholtz waves at the magnetopause
Authors: Sun, T. R.
Wang, C.
Wei, F.
Sembay, S.
First Published: 19-Jan-2015
Publisher: American Geophysical Union (AGU), Wiley
Citation: Journal of Geophysical Research: Space Physics, 2015, 120 (1), pp. 266-275 (10)
Abstract: This paper simulates the Kelvin-Helmholtz wave (KHW)-induced X-ray emissions at the low-latitude magnetopause based on a global MHD code. A method is proposed to extract the KHW information from the X-ray intensity measured by a hypothetical X-ray telescope onboard a satellite assumed with a low Earth orbit. Specifically, the X-ray intensity at high latitude is subtracted from the intensity map as a background to highlight the role of KHW. Using this method, global features of KHW such as the vortex velocity, perturbation degree, spatial distribution, and temporal evolution could be evaluated from the X-ray intensity map. The validity of this method during intervals of solar wind disturbances is also verified. According to the simulation results, X-ray imaging of KHW is suggested as a promising observation technique to essentially “see” the large-scale configuration and evolution of KHW for the first time.
DOI Link: 10.1002/2014JA020497
ISSN: 2169-9402
eISSN: 2169-9402
Version: Publisher Version
Status: Peer-reviewed
Type: Journal Article
Rights: Creative Commons “Attribution Non-Commercial No Derivatives” licence CC BY-NC-ND, further details of which can be found via the following link: Archived with reference to SHERPA/RoMEO and publisher website.
Description: All the analyzed data can be accessed by contacting the authors (email:;
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

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