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Title: Auroral bright spot in Jupiter's active region in corresponding to solar wind dynamic
Authors: Haewsantati, K.
Wannawichian, S.
Clarke, J. T.
Nichols, J. D.
First Published: 2017
Presented at: Siam Physics Congress 2017 (SPC2017)
Publisher: IOP Publishing
Citation: Journal of Physics: Conference Series, 2017, 901 (1), pp. 012013-012013
Abstract: Jupiter's polar emission has brightness whose behavior appears to be unstable. This work focuses on the bright spot in active region which is a section of Jupiter's polar emission. Images of the aurora were taken by Advanced Camera for Surveys (ACS) onboard the Hubble Space Telescope (HST). Previously, two bright spots, which were found on 13 th May 2007, were suggested to be fixed on locations described by system III longitude. The bright spot's origin in equatorial plane was proposed to be at distance 80-90 Jovian radii and probably associated with the solar wind properties. This study analyzes additional data on May 2007 to study long-term variation of brightness and locations of bright spots. The newly modified magnetosphere-ionosphere mapping based on VIP4 and VIPAL model is used to locate the origin of bright spot in magnetosphere. Furthermore, the Michigan Solar Wind Model or mSWiM is also used to study the variation of solar wind dynamic pressure during the time of bright spot's observation. We found that the bright spots appear in similar locations which correspond to similar origins in magnetosphere. In addition, the solar wind dynamic pressure should probably affect the bright spot's variation.
DOI Link: 10.1088/1742-6596/901/1/012013
ISSN: 1742-6588
eISSN: 1742-6596
Version: Publisher Version
Status: Peer-reviewed
Type: Conference Paper
Rights: Copyright © the authors, 2017. This is an open-access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Appears in Collections:Conference Papers & Presentations, Dept. of Physics and Astronomy

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