講演情報
[PPS01-07]How Jupiter's magnetosphere responds to Io's volcanic activity★Invited Papers
*Kazuo Yoshioka1、Fuminori Tsuchiya2、Masato Kagitani2、Tomoki Kimura4、Go Murakami3、Atsushi Yamazaki3、Ichiro Yoshikawa1 (1.Graduate School of frontier Science, The University of Tokyo、2.Tohoku University、3.ISAS/JAXA、4.Tokyo University of Science)
The Io plasma torus (IPT), located in the Jovian inner magnetosphere (6-8 Jovian radii (RJ) from the planet), is filled with electrons and heavy ions such as sulfur and oxygen, a significant portion of which originates from the volcanoes on Io. The IPT is a crucial region connecting the primary plasma source (Io) with the middle and outer magnetosphere, where highly dynamic phenomena occur. Understanding the behavior of plasma in the IPT is essential for discussing the plasma dynamics in the whole Jovian magnetosphere.
A comprehensive understanding of the IPT can be achieved through spectral analysis of ion emissions generated by electron impact excitation. This method is called “Plasma diagnosis”. The emission lines from ions in the IPT are mainly in the extreme ultraviolet (EUV) region. Therefore, EUV spectroscopic data are important for studying Jupiter's inner magnetosphere.
Here we show the analysis of the spectroscopic data taken by the Hisaki satellite together with in-situ data taken by NASA's Juno spacecraft. Radial transports of plasmas and those dependencies on Io’s volcanic activity are discussed. The future perspectives for LAPYUTA mission will also be discussed.
A comprehensive understanding of the IPT can be achieved through spectral analysis of ion emissions generated by electron impact excitation. This method is called “Plasma diagnosis”. The emission lines from ions in the IPT are mainly in the extreme ultraviolet (EUV) region. Therefore, EUV spectroscopic data are important for studying Jupiter's inner magnetosphere.
Here we show the analysis of the spectroscopic data taken by the Hisaki satellite together with in-situ data taken by NASA's Juno spacecraft. Radial transports of plasmas and those dependencies on Io’s volcanic activity are discussed. The future perspectives for LAPYUTA mission will also be discussed.