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Ground-based observations of the [SII] 6731 Å emission lines of the Io plasma torus

Published online by Cambridge University Press:  12 September 2017

P. Magalhães Fabíola Open the ORCID record for P. Magalhães Fabíola [Opens in a new window] ,
Walter Gonzalez ,
Ezequiel Echer ,
Mariza P. Souza-Echer ,
Rosaly Lopes ,
Jeffrey P. Morgenthaler  and
Julie Rathbun
P. Magalhães Fabíola
Affiliation:
National Institute of Space Research, Av. dos Astronautas, 1758, SP, Brazil email: [email protected]
Walter Gonzalez
Affiliation:
National Institute of Space Research, Av. dos Astronautas, 1758, SP, Brazil email: [email protected]
Ezequiel Echer
Affiliation:
National Institute of Space Research, Av. dos Astronautas, 1758, SP, Brazil email: [email protected]
Mariza P. Souza-Echer
Affiliation:
National Institute of Space Research, Av. dos Astronautas, 1758, SP, Brazil email: [email protected]
Rosaly Lopes
Affiliation:
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA email: [email protected]
Jeffrey P. Morgenthaler
Affiliation:
Planetary Science Institute, Tucson, AZ, USA email: [email protected]
Julie Rathbun
Affiliation:
Planetary Science Institute, Tucson, AZ, USA email: [email protected]
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Abstract

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The Io Plasma Torus (IPT) is a doughnut-shaped structure of charged particles, composed mainly of sulfur and oxygen ions. The main source of the IPT is the moon Io, the most volcanically active object in the Solar System. Io is the innermost of the Galilean moons of Jupiter, the main source of the magnetospheric plasma and responsible for injecting nearly 1 ton/s of ions into Jupiter's magnetosphere. In this work ground-based observations of the [SII] 6731 Å emission lines are observed, obtained at the MacMath-Pierce Solar Telescope. The results shown here were obtained in late 1997 and occurred shortly after a period of important eruptions observed by the Galileo mission (1996-2003). Several outbursts were observed and periods of intense volcanic activity are important to correlate with periods of brightness enhancements observed at the IPT. The time of response between an eruption and enhancement at IPT is still not well understood.

Keywords

IoIo Plasma TorusInstrumentationVolcanismJupiter magnetosphere
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S328: Living Around Active Stars , October 2016 , pp. 227 - 229
Copyright
Copyright © International Astronomical Union 2017 

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