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Boundary Detection in Three Dimensions With Application to the SMILE Mission: The Effect of Model‐Fitting Noise
Author(s) -
Jorgensen Anders M.,
Sun Tianran,
Wang Chi,
Dai Lei,
Sembay Steve,
Zheng Jianhua,
Yu Xizheng
Publication year - 2019
Publication title -
journal of geophysical research: space physics
Language(s) - English
Resource type - Journals
eISSN - 2169-9402
pISSN - 2169-9380
DOI - 10.1029/2018ja026124
Subject(s) - magnetosheath , magnetopause , solar wind , physics , bow shock (aerodynamics) , magnetosphere , ionosphere , computational physics , noise (video) , geophysics , polar wind , astronomy , shock wave , plasma , computer science , mechanics , image (mathematics) , quantum mechanics , artificial intelligence
The magnetosheath and near‐Earth solar wind emit X‐rays due to charge‐exchange between the extended atmosphere and highly ionized particles in the solar wind. These emissions can be used to remotely sense the dynamic processes in this region. The Solar Wind Magnetosphere Ionosphere Link Explorer mission will carry out these measurements. In a previous paper, we looked at the effect of photon counting statistics on determining the location of the magnetopause and bow shock. In this paper we explore, through simulations, the more challenging question of orbital viewing geometry bias when the model and the emissions do not match each other exactly. Our simulations conclude that while care must be taken to avoid false minima in the fitting, there is very little to no orbital bias in extracting the position and large‐scale shape of the magnetopause and bow shocks from 2‐D X‐ray images from the future Solar Wind Magnetosphere Ionosphere Link Explorer mission.