Neutral Atom Imaging of the Solar Wind-Magnetosphere-Exosphere Interaction Near the Subsolar Magnetopause

S. A. Fuselier; M. A. Dayeh; A. Galli; H. O. Funsten; N. A. Schwadron; S. M. Petrinec; K. J. Trattner; D. J. McComas; J. L. Burch; S. Toledo-Redondo; J. R. Szalay; R. J. Strangeway

doi:10.1029/2020GL089362

Neutral Atom Imaging of the Solar Wind-Magnetosphere-Exosphere Interaction Near the Subsolar Magnetopause

S. A. Fuselier, M. A. Dayeh, A. Galli, H. O. Funsten, N. A. Schwadron, S. M. Petrinec, K. J. Trattner, D. J. McComas, J. L. Burch, S. Toledo-Redondo, J. R. Szalay, R. J. Strangeway

Astrophysical Sciences

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15 Scopus citations

Abstract

Energetic neutral atoms (ENAs) created by charge-exchange of ions with the Earth's hydrogen exosphere near the subsolar magnetopause yield information on the distribution of plasma in the outer magnetosphere and magnetosheath. ENA observations from the Interstellar Boundary Explorer (IBEX) are used to image magnetosheath plasma and, for the first time, low-energy magnetospheric plasma near the magnetopause. These images show that magnetosheath plasma is distributed fairly evenly near the subsolar magnetopause; however, low-energy magnetospheric plasma is not distributed evenly in the outer magnetosphere. Simultaneous images and in situ observations from the Magnetospheric Multiscale (MMS) spacecraft from November 2015 (during the solar cycle declining phase) are used to derive the exospheric density. The ~11–17 cm⁻³ density at 10 R_E is similar to that obtained previously for solar minimum. Thus, these combined results indicate that the exospheric density 10 R_E from the Earth may have a weak dependence on solar cycle.

Original language	English (US)
Article number	e2020GL089362
Journal	Geophysical Research Letters
Volume	47
Issue number	19
DOIs	https://doi.org/10.1029/2020GL089362
State	Published - Oct 16 2020

All Science Journal Classification (ASJC) codes

Geophysics
General Earth and Planetary Sciences

Keywords

charge-exchange
energetic neutral atoms
solar wind-magnetosphere-exosphere interaction

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10.1029/2020GL089362

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Fuselier, S. A., Dayeh, M. A., Galli, A., Funsten, H. O., Schwadron, N. A., Petrinec, S. M., Trattner, K. J., McComas, D. J., Burch, J. L., Toledo-Redondo, S., Szalay, J. R., & Strangeway, R. J. (2020). Neutral Atom Imaging of the Solar Wind-Magnetosphere-Exosphere Interaction Near the Subsolar Magnetopause. Geophysical Research Letters, 47(19), Article e2020GL089362. https://doi.org/10.1029/2020GL089362

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title = "Neutral Atom Imaging of the Solar Wind-Magnetosphere-Exosphere Interaction Near the Subsolar Magnetopause",

abstract = "Energetic neutral atoms (ENAs) created by charge-exchange of ions with the Earth's hydrogen exosphere near the subsolar magnetopause yield information on the distribution of plasma in the outer magnetosphere and magnetosheath. ENA observations from the Interstellar Boundary Explorer (IBEX) are used to image magnetosheath plasma and, for the first time, low-energy magnetospheric plasma near the magnetopause. These images show that magnetosheath plasma is distributed fairly evenly near the subsolar magnetopause; however, low-energy magnetospheric plasma is not distributed evenly in the outer magnetosphere. Simultaneous images and in situ observations from the Magnetospheric Multiscale (MMS) spacecraft from November 2015 (during the solar cycle declining phase) are used to derive the exospheric density. The ~11–17 cm−3 density at 10 RE is similar to that obtained previously for solar minimum. Thus, these combined results indicate that the exospheric density 10 RE from the Earth may have a weak dependence on solar cycle.",

keywords = "charge-exchange, energetic neutral atoms, solar wind-magnetosphere-exosphere interaction",

author = "Fuselier, {S. A.} and Dayeh, {M. A.} and A. Galli and Funsten, {H. O.} and Schwadron, {N. A.} and Petrinec, {S. M.} and Trattner, {K. J.} and McComas, {D. J.} and Burch, {J. L.} and S. Toledo-Redondo and Szalay, {J. R.} and Strangeway, {R. J.}",

note = "Publisher Copyright: {\textcopyright}2020. The Authors.",

year = "2020",

month = oct,

day = "16",

doi = "10.1029/2020GL089362",

language = "English (US)",

volume = "47",

journal = "Geophysical Research Letters",

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Fuselier, SA, Dayeh, MA, Galli, A, Funsten, HO, Schwadron, NA, Petrinec, SM, Trattner, KJ, McComas, DJ, Burch, JL, Toledo-Redondo, S, Szalay, JR & Strangeway, RJ 2020, 'Neutral Atom Imaging of the Solar Wind-Magnetosphere-Exosphere Interaction Near the Subsolar Magnetopause', Geophysical Research Letters, vol. 47, no. 19, e2020GL089362. https://doi.org/10.1029/2020GL089362

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T1 - Neutral Atom Imaging of the Solar Wind-Magnetosphere-Exosphere Interaction Near the Subsolar Magnetopause

AU - Fuselier, S. A.

AU - Dayeh, M. A.

AU - Galli, A.

AU - Funsten, H. O.

AU - Schwadron, N. A.

AU - Petrinec, S. M.

AU - Trattner, K. J.

AU - McComas, D. J.

AU - Burch, J. L.

AU - Toledo-Redondo, S.

AU - Szalay, J. R.

AU - Strangeway, R. J.

PY - 2020/10/16

Y1 - 2020/10/16

N2 - Energetic neutral atoms (ENAs) created by charge-exchange of ions with the Earth's hydrogen exosphere near the subsolar magnetopause yield information on the distribution of plasma in the outer magnetosphere and magnetosheath. ENA observations from the Interstellar Boundary Explorer (IBEX) are used to image magnetosheath plasma and, for the first time, low-energy magnetospheric plasma near the magnetopause. These images show that magnetosheath plasma is distributed fairly evenly near the subsolar magnetopause; however, low-energy magnetospheric plasma is not distributed evenly in the outer magnetosphere. Simultaneous images and in situ observations from the Magnetospheric Multiscale (MMS) spacecraft from November 2015 (during the solar cycle declining phase) are used to derive the exospheric density. The ~11–17 cm−3 density at 10 RE is similar to that obtained previously for solar minimum. Thus, these combined results indicate that the exospheric density 10 RE from the Earth may have a weak dependence on solar cycle.

AB - Energetic neutral atoms (ENAs) created by charge-exchange of ions with the Earth's hydrogen exosphere near the subsolar magnetopause yield information on the distribution of plasma in the outer magnetosphere and magnetosheath. ENA observations from the Interstellar Boundary Explorer (IBEX) are used to image magnetosheath plasma and, for the first time, low-energy magnetospheric plasma near the magnetopause. These images show that magnetosheath plasma is distributed fairly evenly near the subsolar magnetopause; however, low-energy magnetospheric plasma is not distributed evenly in the outer magnetosphere. Simultaneous images and in situ observations from the Magnetospheric Multiscale (MMS) spacecraft from November 2015 (during the solar cycle declining phase) are used to derive the exospheric density. The ~11–17 cm−3 density at 10 RE is similar to that obtained previously for solar minimum. Thus, these combined results indicate that the exospheric density 10 RE from the Earth may have a weak dependence on solar cycle.

KW - charge-exchange

KW - energetic neutral atoms

KW - solar wind-magnetosphere-exosphere interaction

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ER -

Neutral Atom Imaging of the Solar Wind-Magnetosphere-Exosphere Interaction Near the Subsolar Magnetopause

Abstract

All Science Journal Classification (ASJC) codes

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