BibTex format
@article{Kimura:2016:10.1002/2015JA021893,
author = {Kimura, T and Kraft, RP and Elsner, RF and Branduardi-Raymont, G and Gladstone, GR and Tao, C and Yoshioka, K and Murakami, G and Yamazaki, A and Tsuchiya, F and Vogt, MF and Masters, A and Hasegawa, H and Badman, SV and Roediger, E and Ezoe, Y and Dunn, WR and Yoshikawa, I and Fujimoto, M and Murray, SS},
doi = {10.1002/2015JA021893},
journal = {Journal of Geophysical Research: Space Physics},
pages = {2308--2320},
title = {Jupiter's X-ray and EUV auroras monitored by Chandra, XMM-Newton, and Hisaki satellite},
url = {http://dx.doi.org/10.1002/2015JA021893},
volume = {121},
year = {2016}
}
RIS format (EndNote, RefMan)
TY - JOUR
AB - Jupiter's X-ray auroral emission in the polar cap region results from particles which have undergone strong field-aligned acceleration into the ionosphere. The origin of precipitating ions and electrons and the time variability in the X-ray emission are essential to uncover the driving mechanism for the high-energy acceleration. The magnetospheric location of the source field line where the X-ray is generated is likely affected by the solar wind variability. However, these essential characteristics are still unknown because the long-term monitoring of the X-rays and contemporaneous solar wind variability has not been carried out. In April 2014, the first long-term multiwavelength monitoring of Jupiter's X-ray and EUV auroral emissions was made by the Chandra X-ray Observatory, XMM-Newton, and Hisaki satellite. We find that the X-ray count rates are positively correlated with the solar wind velocity and insignificantly with the dynamic pressure. Based on the magnetic field mapping model, a half of the X-ray auroral region was found to be open to the interplanetary space. The other half of the X-ray auroral source region is magnetically connected with the prenoon to postdusk sector in the outermost region of the magnetosphere, where the Kelvin-Helmholtz (KH) instability, magnetopause reconnection, and quasiperiodic particle injection potentially take place. We speculate that the high-energy auroral acceleration is associated with the KH instability and/or magnetopause reconnection. This association is expected to also occur in many other space plasma environments such as Saturn and other magnetized rotators.
AU - Kimura,T
AU - Kraft,RP
AU - Elsner,RF
AU - Branduardi-Raymont,G
AU - Gladstone,GR
AU - Tao,C
AU - Yoshioka,K
AU - Murakami,G
AU - Yamazaki,A
AU - Tsuchiya,F
AU - Vogt,MF
AU - Masters,A
AU - Hasegawa,H
AU - Badman,SV
AU - Roediger,E
AU - Ezoe,Y
AU - Dunn,WR
AU - Yoshikawa,I
AU - Fujimoto,M
AU - Murray,SS
DO - 10.1002/2015JA021893
EP - 2320
PY - 2016///
SN - 2169-9402
SP - 2308
TI - Jupiter's X-ray and EUV auroras monitored by Chandra, XMM-Newton, and Hisaki satellite
T2 - Journal of Geophysical Research: Space Physics
UR - http://dx.doi.org/10.1002/2015JA021893
UR - http://hdl.handle.net/10044/1/33301
VL - 121
ER -