Poynting Fluxes, Field‐Aligned Current Densities, and the Efficiency of the Io‐Jupiter Electrodynamic Interaction

A. H. Sulaiman; J. R. Szalay; G. Clark; F. Allegrini; F. Bagenal; M. Brennan; J. E. P. Connerney; V. Hue; W. S. Kurth; R. L. Lysak; J. D. Nichols; J. Saur; S. J. Bolton

doi:10.1029/2023gl103456

Poynting Fluxes, Field‐Aligned Current Densities, and the Efficiency of the Io‐Jupiter Electrodynamic Interaction

A. H. Sulaiman, J. R. Szalay, G. Clark, F. Allegrini, F. Bagenal, M. Brennan, J. E. P. Connerney, V. Hue, W. S. Kurth, R. L. Lysak, J. D. Nichols, J. Saur, S. J. Bolton

Physics and Astronomy (Twin Cities)

Research output: Contribution to journal › Article › peer-review

Abstract

Juno's highly inclined orbits provide opportunities to sample high-latitude magnetic field lines connected to the orbit of Io, among the other Galilean satellites. Its payload offers both remote-sensing and in-situ measurements of the Io-Jupiter interaction. These are at discrete points along Io's footprint tail and at least one event (12th perijove) was confirmed to be on a flux tube Alfvénically connected to Io, allowing for an investigation of how the interaction evolves down-tail. Here we present Alfvén Poynting fluxes and field-aligned current densities along field lines connected to Io and its orbit. We explore their dependence as a function of down-tail distance and show the expected decay as seen in UV brightness and electron energy fluxes. We show that the Alfvén Poynting and electron energy fluxes are highly correlated and related by an efficiency that is fully consistent with acceleration from Alfvén wave filamentation via a turbulent cascade process.

Original language	English (US)
Article number	e2023GL103456
Journal	Geophysical Research Letters
Volume	50
Issue number	10
DOIs	https://doi.org/10.1029/2023gl103456
State	Published - May 28 2023

Bibliographical note

Funding Information:
We are grateful to Masafumi Imai, Rob Wilson, Marissa Vogt, Matt James, and Gabby Provan who, in collaboration with co-authors, provided essential tools for modeling and tracing Jupiter's magnetic field. A.H.S. acknowledges Stavros Kotsiaros, Yash Sarkango, and Adam Masters for useful discussions. We are grateful for the support of MAG and JADE processing/distribution staff. A.H.S. and J.R.S. acknowledge NASA NFDAP Grant 80NSSC23K0276. The research at the University of Iowa was supported by NASA through contract 699041X with the Southwest Research Institute. We acknowledge the use of the Space Physics Data Repository at the University of Iowa supported by the Roy J. Carver Charitable Trust.

Funding Information:
We are grateful to Masafumi Imai, Rob Wilson, Marissa Vogt, Matt James, and Gabby Provan who, in collaboration with co‐authors, provided essential tools for modeling and tracing Jupiter's magnetic field. A.H.S. acknowledges Stavros Kotsiaros, Yash Sarkango, and Adam Masters for useful discussions. We are grateful for the support of MAG and JADE processing/distribution staff. A.H.S. and J.R.S. acknowledge NASA NFDAP Grant 80NSSC23K0276. The research at the University of Iowa was supported by NASA through contract 699041X with the Southwest Research Institute. We acknowledge the use of the Space Physics Data Repository at the University of Iowa supported by the Roy J. Carver Charitable Trust.

Publisher Copyright:
© 2023. The Authors.

Publisher link

10.1029/2023gl103456License: CC BY-NC

Find It

Find It at U of M Libraries

Cite this

Sulaiman, A. H., Szalay, J. R., Clark, G., Allegrini, F., Bagenal, F., Brennan, M., Connerney, J. E. P., Hue, V., Kurth, W. S., Lysak, R. L., Nichols, J. D., Saur, J., & Bolton, S. J. (2023). Poynting Fluxes, Field‐Aligned Current Densities, and the Efficiency of the Io‐Jupiter Electrodynamic Interaction. Geophysical Research Letters, 50(10), [e2023GL103456]. https://doi.org/10.1029/2023gl103456

Sulaiman, AH, Szalay, JR, Clark, G, Allegrini, F, Bagenal, F, Brennan, M, Connerney, JEP, Hue, V, Kurth, WS, Lysak, RL, Nichols, JD, Saur, J & Bolton, SJ 2023, 'Poynting Fluxes, Field‐Aligned Current Densities, and the Efficiency of the Io‐Jupiter Electrodynamic Interaction', Geophysical Research Letters, vol. 50, no. 10, e2023GL103456. https://doi.org/10.1029/2023gl103456

@article{275c6c86cd5742c1adaaafa7e8cb3f9a,

title = "Poynting Fluxes, Field‐Aligned Current Densities, and the Efficiency of the Io‐Jupiter Electrodynamic Interaction",

abstract = "Juno's highly inclined orbits provide opportunities to sample high-latitude magnetic field lines connected to the orbit of Io, among the other Galilean satellites. Its payload offers both remote-sensing and in-situ measurements of the Io-Jupiter interaction. These are at discrete points along Io's footprint tail and at least one event (12th perijove) was confirmed to be on a flux tube Alfv{\'e}nically connected to Io, allowing for an investigation of how the interaction evolves down-tail. Here we present Alfv{\'e}n Poynting fluxes and field-aligned current densities along field lines connected to Io and its orbit. We explore their dependence as a function of down-tail distance and show the expected decay as seen in UV brightness and electron energy fluxes. We show that the Alfv{\'e}n Poynting and electron energy fluxes are highly correlated and related by an efficiency that is fully consistent with acceleration from Alfv{\'e}n wave filamentation via a turbulent cascade process.",

author = "Sulaiman, {A. H.} and Szalay, {J. R.} and G. Clark and F. Allegrini and F. Bagenal and M. Brennan and Connerney, {J. E. P.} and V. Hue and Kurth, {W. S.} and Lysak, {R. L.} and Nichols, {J. D.} and J. Saur and Bolton, {S. J.}",

note = "Funding Information: We are grateful to Masafumi Imai, Rob Wilson, Marissa Vogt, Matt James, and Gabby Provan who, in collaboration with co-authors, provided essential tools for modeling and tracing Jupiter's magnetic field. A.H.S. acknowledges Stavros Kotsiaros, Yash Sarkango, and Adam Masters for useful discussions. We are grateful for the support of MAG and JADE processing/distribution staff. A.H.S. and J.R.S. acknowledge NASA NFDAP Grant 80NSSC23K0276. The research at the University of Iowa was supported by NASA through contract 699041X with the Southwest Research Institute. We acknowledge the use of the Space Physics Data Repository at the University of Iowa supported by the Roy J. Carver Charitable Trust. Funding Information: We are grateful to Masafumi Imai, Rob Wilson, Marissa Vogt, Matt James, and Gabby Provan who, in collaboration with co‐authors, provided essential tools for modeling and tracing Jupiter's magnetic field. A.H.S. acknowledges Stavros Kotsiaros, Yash Sarkango, and Adam Masters for useful discussions. We are grateful for the support of MAG and JADE processing/distribution staff. A.H.S. and J.R.S. acknowledge NASA NFDAP Grant 80NSSC23K0276. The research at the University of Iowa was supported by NASA through contract 699041X with the Southwest Research Institute. We acknowledge the use of the Space Physics Data Repository at the University of Iowa supported by the Roy J. Carver Charitable Trust. Publisher Copyright: {\textcopyright} 2023. The Authors.",

year = "2023",

month = may,

day = "28",

doi = "10.1029/2023gl103456",

language = "English (US)",

volume = "50",

journal = "Geophysical Research Letters",

issn = "0094-8276",

publisher = "American Geophysical Union",

number = "10",

}

TY - JOUR

T1 - Poynting Fluxes, Field‐Aligned Current Densities, and the Efficiency of the Io‐Jupiter Electrodynamic Interaction

AU - Sulaiman, A. H.

AU - Szalay, J. R.

AU - Clark, G.

AU - Allegrini, F.

AU - Bagenal, F.

AU - Brennan, M.

AU - Connerney, J. E. P.

AU - Hue, V.

AU - Kurth, W. S.

AU - Lysak, R. L.

AU - Nichols, J. D.

AU - Saur, J.

AU - Bolton, S. J.

N1 - Funding Information: We are grateful to Masafumi Imai, Rob Wilson, Marissa Vogt, Matt James, and Gabby Provan who, in collaboration with co-authors, provided essential tools for modeling and tracing Jupiter's magnetic field. A.H.S. acknowledges Stavros Kotsiaros, Yash Sarkango, and Adam Masters for useful discussions. We are grateful for the support of MAG and JADE processing/distribution staff. A.H.S. and J.R.S. acknowledge NASA NFDAP Grant 80NSSC23K0276. The research at the University of Iowa was supported by NASA through contract 699041X with the Southwest Research Institute. We acknowledge the use of the Space Physics Data Repository at the University of Iowa supported by the Roy J. Carver Charitable Trust. Funding Information: We are grateful to Masafumi Imai, Rob Wilson, Marissa Vogt, Matt James, and Gabby Provan who, in collaboration with co‐authors, provided essential tools for modeling and tracing Jupiter's magnetic field. A.H.S. acknowledges Stavros Kotsiaros, Yash Sarkango, and Adam Masters for useful discussions. We are grateful for the support of MAG and JADE processing/distribution staff. A.H.S. and J.R.S. acknowledge NASA NFDAP Grant 80NSSC23K0276. The research at the University of Iowa was supported by NASA through contract 699041X with the Southwest Research Institute. We acknowledge the use of the Space Physics Data Repository at the University of Iowa supported by the Roy J. Carver Charitable Trust. Publisher Copyright: © 2023. The Authors.

PY - 2023/5/28

Y1 - 2023/5/28

N2 - Juno's highly inclined orbits provide opportunities to sample high-latitude magnetic field lines connected to the orbit of Io, among the other Galilean satellites. Its payload offers both remote-sensing and in-situ measurements of the Io-Jupiter interaction. These are at discrete points along Io's footprint tail and at least one event (12th perijove) was confirmed to be on a flux tube Alfvénically connected to Io, allowing for an investigation of how the interaction evolves down-tail. Here we present Alfvén Poynting fluxes and field-aligned current densities along field lines connected to Io and its orbit. We explore their dependence as a function of down-tail distance and show the expected decay as seen in UV brightness and electron energy fluxes. We show that the Alfvén Poynting and electron energy fluxes are highly correlated and related by an efficiency that is fully consistent with acceleration from Alfvén wave filamentation via a turbulent cascade process.

AB - Juno's highly inclined orbits provide opportunities to sample high-latitude magnetic field lines connected to the orbit of Io, among the other Galilean satellites. Its payload offers both remote-sensing and in-situ measurements of the Io-Jupiter interaction. These are at discrete points along Io's footprint tail and at least one event (12th perijove) was confirmed to be on a flux tube Alfvénically connected to Io, allowing for an investigation of how the interaction evolves down-tail. Here we present Alfvén Poynting fluxes and field-aligned current densities along field lines connected to Io and its orbit. We explore their dependence as a function of down-tail distance and show the expected decay as seen in UV brightness and electron energy fluxes. We show that the Alfvén Poynting and electron energy fluxes are highly correlated and related by an efficiency that is fully consistent with acceleration from Alfvén wave filamentation via a turbulent cascade process.

UR - https://doi.org/10.1029/2023GL103456

U2 - 10.1029/2023gl103456

DO - 10.1029/2023gl103456

M3 - Article

SN - 0094-8276

VL - 50

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 10

M1 - e2023GL103456

ER -

Poynting Fluxes, Field‐Aligned Current Densities, and the Efficiency of the Io‐Jupiter Electrodynamic Interaction

Abstract

Bibliographical note

Publisher link

Find It

Other files and links

Cite this