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The independent pulsations of Jupiter's northern and southern X-ray auroras

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The independent pulsations of Jupiter's northern and southern X-ray auroras. / Dunn, W. R.; Branduardi-Raymont, G.; Ray, L. C. et al.
In: Nature Astronomy, Vol. 1, No. 11, 01.11.2017, p. 758-764.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Dunn, WR, Branduardi-Raymont, G, Ray, LC, Jackman, CM, Kraft, RP, Elsner, RF, Rae, IJ, Yao, Z, Vogt, MF, Jones, GH, Gladstone, GR, Orton, GS, Sinclair, JA, Ford, PG, Graham, GA, Caro-Carretero, R & Coates, AJ 2017, 'The independent pulsations of Jupiter's northern and southern X-ray auroras', Nature Astronomy, vol. 1, no. 11, pp. 758-764. https://doi.org/10.1038/s41550-017-0262-6

APA

Dunn, W. R., Branduardi-Raymont, G., Ray, L. C., Jackman, C. M., Kraft, R. P., Elsner, R. F., Rae, I. J., Yao, Z., Vogt, M. F., Jones, G. H., Gladstone, G. R., Orton, G. S., Sinclair, J. A., Ford, P. G., Graham, G. A., Caro-Carretero, R., & Coates, A. J. (2017). The independent pulsations of Jupiter's northern and southern X-ray auroras. Nature Astronomy, 1(11), 758-764. https://doi.org/10.1038/s41550-017-0262-6

Vancouver

Dunn WR, Branduardi-Raymont G, Ray LC, Jackman CM, Kraft RP, Elsner RF et al. The independent pulsations of Jupiter's northern and southern X-ray auroras. Nature Astronomy. 2017 Nov 1;1(11):758-764. Epub 2017 Oct 30. doi: 10.1038/s41550-017-0262-6

Author

Dunn, W. R. ; Branduardi-Raymont, G. ; Ray, L. C. et al. / The independent pulsations of Jupiter's northern and southern X-ray auroras. In: Nature Astronomy. 2017 ; Vol. 1, No. 11. pp. 758-764.

Bibtex

@article{2db70362cae44238803523e3a0adab29,
title = "The independent pulsations of Jupiter's northern and southern X-ray auroras",
abstract = "Auroral hot spots are observed across the Universe at different scales' and mark the coupling between a surrounding plasma environment and an atmosphere. Within our own Solar System, Jupiter possesses the only resolvable example of this large-scale energy transfer. Jupiter's northern X-ray aurora is concentrated into a hot spot, which is located at the most poleward regions of the planet's aurora and pulses either periodically(2,3) or irregularly(4,4). X-ray emission line spectra demonstrate that Jupiter's northern hot spot is produced by high charge-state oxygen, sulfur and/or carbon ions with an energy of tens of MeV (refs (4-6)) that are undergoing charge exchange. Observations instead failed to reveal a similar feature in the south(2,3,4,4). Here, we report the existence of a persistent southern X-ray hot spot. Surprisingly, this largescale southern auroral structure behaves independently of its northern counterpart. Using XMM-Newton and Chandra X-ray campaigns, performed in May-June 2016 and March 2007, we show that Jupiter's northern and southern spots each exhibit different characteristics, such as different periodic pulsations and uncorrelated changes in brightness. These observations imply that highly energetic, non-conjugate magnetospheric processes sometimes drive the polar regions of Jupiter's day side magnetosphere. This is in contrast to current models of X-ray generation for Jupiter(4,10). Understanding the behaviour and drivers of Jupiter's pair of hot spots is critical to the use of X-rays as diagnostics of the wide range of rapidly rotating celestial bodies that exhibit these auroral phenomena.",
keywords = "MIDDLE MAGNETOSPHERE, SOLAR-WIND, WAVES, FLUX",
author = "Dunn, {W. R.} and G. Branduardi-Raymont and Ray, {L. C.} and Jackman, {C. M.} and Kraft, {R. P.} and Elsner, {R. F.} and Rae, {I. J.} and Z. Yao and Vogt, {M. F.} and Jones, {G. H.} and Gladstone, {G. R.} and Orton, {G. S.} and Sinclair, {J. A.} and Ford, {P. G.} and Graham, {G. A.} and R. Caro-Carretero and Coates, {A. J.}",
note = "{\textcopyright} 2017 Macmillan Publishers Limited, part of Springer Nature. All rights reserved.",
year = "2017",
month = nov,
day = "1",
doi = "10.1038/s41550-017-0262-6",
language = "English",
volume = "1",
pages = "758--764",
journal = "Nature Astronomy",
issn = "2397-3366",
publisher = "Nature Publishing Group",
number = "11",

}

RIS

TY - JOUR

T1 - The independent pulsations of Jupiter's northern and southern X-ray auroras

AU - Dunn, W. R.

AU - Branduardi-Raymont, G.

AU - Ray, L. C.

AU - Jackman, C. M.

AU - Kraft, R. P.

AU - Elsner, R. F.

AU - Rae, I. J.

AU - Yao, Z.

AU - Vogt, M. F.

AU - Jones, G. H.

AU - Gladstone, G. R.

AU - Orton, G. S.

AU - Sinclair, J. A.

AU - Ford, P. G.

AU - Graham, G. A.

AU - Caro-Carretero, R.

AU - Coates, A. J.

N1 - © 2017 Macmillan Publishers Limited, part of Springer Nature. All rights reserved.

PY - 2017/11/1

Y1 - 2017/11/1

N2 - Auroral hot spots are observed across the Universe at different scales' and mark the coupling between a surrounding plasma environment and an atmosphere. Within our own Solar System, Jupiter possesses the only resolvable example of this large-scale energy transfer. Jupiter's northern X-ray aurora is concentrated into a hot spot, which is located at the most poleward regions of the planet's aurora and pulses either periodically(2,3) or irregularly(4,4). X-ray emission line spectra demonstrate that Jupiter's northern hot spot is produced by high charge-state oxygen, sulfur and/or carbon ions with an energy of tens of MeV (refs (4-6)) that are undergoing charge exchange. Observations instead failed to reveal a similar feature in the south(2,3,4,4). Here, we report the existence of a persistent southern X-ray hot spot. Surprisingly, this largescale southern auroral structure behaves independently of its northern counterpart. Using XMM-Newton and Chandra X-ray campaigns, performed in May-June 2016 and March 2007, we show that Jupiter's northern and southern spots each exhibit different characteristics, such as different periodic pulsations and uncorrelated changes in brightness. These observations imply that highly energetic, non-conjugate magnetospheric processes sometimes drive the polar regions of Jupiter's day side magnetosphere. This is in contrast to current models of X-ray generation for Jupiter(4,10). Understanding the behaviour and drivers of Jupiter's pair of hot spots is critical to the use of X-rays as diagnostics of the wide range of rapidly rotating celestial bodies that exhibit these auroral phenomena.

AB - Auroral hot spots are observed across the Universe at different scales' and mark the coupling between a surrounding plasma environment and an atmosphere. Within our own Solar System, Jupiter possesses the only resolvable example of this large-scale energy transfer. Jupiter's northern X-ray aurora is concentrated into a hot spot, which is located at the most poleward regions of the planet's aurora and pulses either periodically(2,3) or irregularly(4,4). X-ray emission line spectra demonstrate that Jupiter's northern hot spot is produced by high charge-state oxygen, sulfur and/or carbon ions with an energy of tens of MeV (refs (4-6)) that are undergoing charge exchange. Observations instead failed to reveal a similar feature in the south(2,3,4,4). Here, we report the existence of a persistent southern X-ray hot spot. Surprisingly, this largescale southern auroral structure behaves independently of its northern counterpart. Using XMM-Newton and Chandra X-ray campaigns, performed in May-June 2016 and March 2007, we show that Jupiter's northern and southern spots each exhibit different characteristics, such as different periodic pulsations and uncorrelated changes in brightness. These observations imply that highly energetic, non-conjugate magnetospheric processes sometimes drive the polar regions of Jupiter's day side magnetosphere. This is in contrast to current models of X-ray generation for Jupiter(4,10). Understanding the behaviour and drivers of Jupiter's pair of hot spots is critical to the use of X-rays as diagnostics of the wide range of rapidly rotating celestial bodies that exhibit these auroral phenomena.

KW - MIDDLE MAGNETOSPHERE

KW - SOLAR-WIND

KW - WAVES

KW - FLUX

U2 - 10.1038/s41550-017-0262-6

DO - 10.1038/s41550-017-0262-6

M3 - Journal article

VL - 1

SP - 758

EP - 764

JO - Nature Astronomy

JF - Nature Astronomy

SN - 2397-3366

IS - 11

ER -