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Inflow Speed Analysis of Interchange Injections in Saturn's Magnetosphere

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Inflow Speed Analysis of Interchange Injections in Saturn's Magnetosphere. / Paranicas, C.; Thomsen, Michelle F.; Kollman, P.; Azari, Abigail; Bader, Alexander; Badman, Sarah; Dumont, M; Kinrade, Joe; Krupp, N.; Roussos, E.

In: Journal of Geophysical Research: Space Physics, Vol. 125, No. 9, e2020JA028299, 14.09.2020.

Research output: Contribution to journalJournal articlepeer-review

Harvard

Paranicas, C, Thomsen, MF, Kollman, P, Azari, A, Bader, A, Badman, S, Dumont, M, Kinrade, J, Krupp, N & Roussos, E 2020, 'Inflow Speed Analysis of Interchange Injections in Saturn's Magnetosphere', Journal of Geophysical Research: Space Physics, vol. 125, no. 9, e2020JA028299. https://doi.org/10.1029/2020JA028299

APA

Paranicas, C., Thomsen, M. F., Kollman, P., Azari, A., Bader, A., Badman, S., Dumont, M., Kinrade, J., Krupp, N., & Roussos, E. (2020). Inflow Speed Analysis of Interchange Injections in Saturn's Magnetosphere. Journal of Geophysical Research: Space Physics, 125(9), [e2020JA028299]. https://doi.org/10.1029/2020JA028299

Vancouver

Paranicas C, Thomsen MF, Kollman P, Azari A, Bader A, Badman S et al. Inflow Speed Analysis of Interchange Injections in Saturn's Magnetosphere. Journal of Geophysical Research: Space Physics. 2020 Sep 14;125(9). e2020JA028299. https://doi.org/10.1029/2020JA028299

Author

Paranicas, C. ; Thomsen, Michelle F. ; Kollman, P. ; Azari, Abigail ; Bader, Alexander ; Badman, Sarah ; Dumont, M ; Kinrade, Joe ; Krupp, N. ; Roussos, E. / Inflow Speed Analysis of Interchange Injections in Saturn's Magnetosphere. In: Journal of Geophysical Research: Space Physics. 2020 ; Vol. 125, No. 9.

Bibtex

@article{e78a638922cf4b6fa2a0d045a65d20e1,
title = "Inflow Speed Analysis of Interchange Injections in Saturn's Magnetosphere",
abstract = "During its more than 13 years in orbit, the Cassini spacecraft detected a large number of plasma and energetic charged particle injections in Saturn's inner magnetosphere. In the corotating frame of the planet, the plasma contained within an injection moves radially inward with the component particles gaining energy. The highest energy particles in the injection experience stronger gradient‐curvature drifts in the longitudinal direction and can drift out of the main body of the injection. We have used these drift‐out effects to estimate the inflow speed of 19 injections by surveying cases from the available plasma data. We find that the average inflow speed from our sample is 22 km/s, and the values are well distributed between 0 and 50 km/s, with a few higher estimates. We have also computed the radial travel distance of interchange events and found that these are typically one to two Saturn radii. We discuss the implications of these quantifications on our understanding of transport.",
keywords = "injections, Saturn, interchange, inflow, recirculation, plasma",
author = "C. Paranicas and Thomsen, {Michelle F.} and P. Kollman and Abigail Azari and Alexander Bader and Sarah Badman and M Dumont and Joe Kinrade and N. Krupp and E. Roussos",
year = "2020",
month = sep,
day = "14",
doi = "10.1029/2020JA028299",
language = "English",
volume = "125",
journal = "Journal of Geophysical Research: Space Physics",
issn = "2169-9402",
publisher = "Blackwell Publishing Ltd",
number = "9",

}

RIS

TY - JOUR

T1 - Inflow Speed Analysis of Interchange Injections in Saturn's Magnetosphere

AU - Paranicas, C.

AU - Thomsen, Michelle F.

AU - Kollman, P.

AU - Azari, Abigail

AU - Bader, Alexander

AU - Badman, Sarah

AU - Dumont, M

AU - Kinrade, Joe

AU - Krupp, N.

AU - Roussos, E.

PY - 2020/9/14

Y1 - 2020/9/14

N2 - During its more than 13 years in orbit, the Cassini spacecraft detected a large number of plasma and energetic charged particle injections in Saturn's inner magnetosphere. In the corotating frame of the planet, the plasma contained within an injection moves radially inward with the component particles gaining energy. The highest energy particles in the injection experience stronger gradient‐curvature drifts in the longitudinal direction and can drift out of the main body of the injection. We have used these drift‐out effects to estimate the inflow speed of 19 injections by surveying cases from the available plasma data. We find that the average inflow speed from our sample is 22 km/s, and the values are well distributed between 0 and 50 km/s, with a few higher estimates. We have also computed the radial travel distance of interchange events and found that these are typically one to two Saturn radii. We discuss the implications of these quantifications on our understanding of transport.

AB - During its more than 13 years in orbit, the Cassini spacecraft detected a large number of plasma and energetic charged particle injections in Saturn's inner magnetosphere. In the corotating frame of the planet, the plasma contained within an injection moves radially inward with the component particles gaining energy. The highest energy particles in the injection experience stronger gradient‐curvature drifts in the longitudinal direction and can drift out of the main body of the injection. We have used these drift‐out effects to estimate the inflow speed of 19 injections by surveying cases from the available plasma data. We find that the average inflow speed from our sample is 22 km/s, and the values are well distributed between 0 and 50 km/s, with a few higher estimates. We have also computed the radial travel distance of interchange events and found that these are typically one to two Saturn radii. We discuss the implications of these quantifications on our understanding of transport.

KW - injections

KW - Saturn

KW - interchange

KW - inflow

KW - recirculation

KW - plasma

U2 - 10.1029/2020JA028299

DO - 10.1029/2020JA028299

M3 - Journal article

VL - 125

JO - Journal of Geophysical Research: Space Physics

JF - Journal of Geophysical Research: Space Physics

SN - 2169-9402

IS - 9

M1 - e2020JA028299

ER -