Statistical analysis of the energetic ion and ENA data for the Titan environment

Garnier, Philippe; Dandouras, I.; Toublanc, D.; Roelof, E. C.; Brandt, P. C.; Mitchell, D. G.; Krimigis, S. M.; Krupp, N.; Hamilton, D. C.; Wahlund, J. E.

doi:10.1016/j.pss.2010.08.009

Cited by 34 publications

(53 citation statements)

References 48 publications

(71 reference statements)

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“…When Titan was located at the subsolar point they calculated that Titan should be located in the magnetosphere 56.7% of the time, 42.1% of the time in the magnetosheath, and 1.3% in the solar wind. In separate studies found a probability of 5.5% for Titan being outside the magnetosphere at 1200 Saturn Local Time (SLT) and Garnier et al (2010) found a probability of 23% for Titan being located in the magnetosheath between 1000 and 1400 SLT.…”

Section: Location Of the Magnetopausementioning

confidence: 99%

“…The energetic proton environment at Titan's orbit will be described based on analyses of Cassini MIMI (Magnetospheric Imaging Instrument) data by Garnier (2007), Garnier et al (2010) and Dialynas et al (2009). The suprathermal particle pressure analysis is based on energetic particle pressures calculated from the MIMI/CHEMS (Charge Energy Mass Spectrometer) instrument by .…”

Section: Energetic Particles and Suprathermal Particle Pressure At Timentioning

confidence: 99%

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Upstream of Saturn and Titan

et al. 2011

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The formation of Titan's induced magnetosphere is a unique and important example in the solar system of a plasma-moon interaction where the moon has a substantial atmosphere. The field and particle conditions upstream of Titan are important in controlling the interaction and also play a strong role in modulating the chemistry of the ionosphere. In this paper we review Titan's plasma interaction to identify important upstream parameters and review the physics of Saturn's magnetosphere near Titan's orbit to highlight how these upstream parameters may vary. We discuss the conditions upstream of Saturn in the solar wind and the conditions found in Saturn's magnetosheath. Statistical work on Titan's upstream magnetospheric fields and particles are discussed. Finally, various classification schemes are presented and combined into a single list of Cassini Titan encounter classes which is also used to highlight differences between these classification schemes.

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Section: Location Of the Magnetopausementioning

confidence: 99%

Section: Energetic Particles and Suprathermal Particle Pressure At Timentioning

confidence: 99%

Upstream of Saturn and Titan

et al. 2011

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“…The plasma is centrifugally confined in this magnetodisc whereas the energetic particles are free to extend to higher latitudes (e.g., Achilleos et al, 2010;Sergis et al, 2011). A number of authors have attempted to classify the upstream environment of Titan (Rymer et al, 2009;Simon et al, 2010a;Garnier et al, 2010) using a variety of criteria to produce categories such as "plasma sheet", "current sheet" and "lobe". These classifications have proven to be useful in understanding flyby-to-flyby variability of Titan's atmosphere (e.g., Westlake et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Electric field variability and classifications of Titan's magnetoplasma environment

2011

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Abstract. The atmosphere of Saturn's largest moon Titan is driven by photochemistry, charged particle precipitation from Saturn's upstream magnetosphere, and presumably by the diffusion of the magnetospheric field into the outer ionosphere, amongst other processes. Ion pickup, controlled by the upstream convection electric field, plays a role in the loss of this atmosphere. The interaction of Titan with Saturn's magnetosphere results in the formation of a flow-induced magnetosphere. The upstream magnetoplasma environment of Titan is a complex and highly variable system and significant quasi-periodic modulations of the plasma in this region of Saturn's magnetosphere have been reported. In this paper we quantitatively investigate the effect of these quasiperiodic modulations on the convection electric field at Titan. We show that the electric field can be significantly perturbed away from the nominal radial orientation inferred from Voyager 1 observations, and demonstrate that upstream categorisation schemes must be used with care when undertaking quantitative studies of Titan's magnetospheric interaction, particularly where assumptions regarding the orientation of the convection electric field are made.

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“…Dandouras et al 2009;Garnier et al 2010), but can also get under some conditions into the magnetosheath ) or even in the solar wind (Bertucci et al 2014), particle precipitation, hence ionization, can be very variable depending on the position of the satellite and on the local plasma conditions. Knowledge of the whole ionization profile in the atmosphere of Titan is however widespread.…”

Section: Space Weather At the Saturnian Moonsmentioning

confidence: 99%

Planetary space weather: scientific aspects and future perspectives

Plainaki

Lilensten

Radioti

et al. 2016

J. Space Weather Space Clim.

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In this paper, we review the scientific aspects of planetary space weather at different regions of our Solar System, performing a comparative planetology analysis that includes a direct reference to the circum-terrestrial case. Through an interdisciplinary analysis of existing results based both on observational data and theoretical models, we review the nature of the interactions between the environment of a Solar System body other than the Earth and the impinging plasma/radiation, and we offer some considerations related to the planning of future space observations. We highlight the importance of such comparative studies for data interpretations in the context of future space missions (e.g. ESA JUICE; ESA/JAXA BEPI COLOMBO). Moreover, we discuss how the study of planetary space weather can provide feedback for better understanding the traditional circumterrestrial space weather. Finally, a strategy for future global investigations related to this thematic is proposed.

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Statistical analysis of the energetic ion and ENA data for the Titan environment

Cited by 34 publications

References 48 publications

Upstream of Saturn and Titan

Upstream of Saturn and Titan

Electric field variability and classifications of Titan's magnetoplasma environment

Planetary space weather: scientific aspects and future perspectives

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