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Title: Boundary Detection in Three Dimensions With Application to the SMILE Mission: The Effect of Model-Fitting Noise
Authors: Jorgensen, AM
Sun, T
Wang, C
Dai, L
Sembay, S
Zheng, J
Yu, X
First Published: 1-May-2019
Publisher: American Geophysical Union (AGU), Wiley
Citation: Journal of Geophysical Research: Space Physics, 2019, 124 (6), pp. 4341-4355 (15)
Abstract: 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.
DOI Link: 10.1029/2018JA026124
ISSN: 2169-9380
eISSN: 2169-9402
Version: Publisher Version
Status: Peer-reviewed
Type: Journal Article
Rights: Copyright © 2019, American Geophysical Union (AGU), Wiley. Deposited with reference to the publisher’s open access archiving policy. (
Description: Files containing the X‐ray volume emission and magnetopause boundary location used as the input to all the simulations, as well as IDL‐language code to read those files, may be downloaded online from the Open Science Framework (; Jorgensen et al., 2019).
The file associated with this record is under embargo until 6 months after publication, in accordance with the publisher's self-archiving policy. The full text may be available through the publisher links provided above.
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

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