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Solar control on Jupiter's equatorial X-ray emissions: 26-29 November 2003 XMM-Newton observation

Bhardwaj, A; Branduardi-Raymont, G; Elsner, RF; Gladstone, GR; Ramsay, G; Rodriguez, P; Soria, R; ... Cravens, TE; + view all (2005) Solar control on Jupiter's equatorial X-ray emissions: 26-29 November 2003 XMM-Newton observation. Geophysical Research Letters , 32 (3) , Article L03S08. 10.1029/2004GL021497. Green open access

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Abstract

During Nov. 26 - 29, 2003 XMM-Newton observed soft (0.2 - 2 keV) X-ray emission from Jupiter for 69 hours. The low-latitude X-ray disk emission of Jupiter is observed to be almost uniform in intensity with brightness that is consistent with a solar-photon driven process. The simultaneous light curves of Jovian equatorial X rays and solar X rays ( measured by the TIMED/SEE and GOES satellites) show similar day-to-day variability. A large solar X-ray flare occurring on the Jupiter-facing side of the Sun is found to have a corresponding feature in the Jovian X rays. These results support the hypothesis that X-ray emission from Jovian low-latitudes are solar X rays scattered from the planet's upper atmosphere, and suggest that the Sun directly controls the non-auroral X rays from Jupiter's disk. Our study also suggests that Jovian equatorial X rays can be used to monitor the solar X-ray flare activity on the hemisphere of the Sun that is invisible to space weather satellites.

Type: Article
Title: Solar control on Jupiter's equatorial X-ray emissions: 26-29 November 2003 XMM-Newton observation
Open access status: An open access version is available from UCL Discovery
DOI: 10.1029/2004GL021497
Publisher version: http://dx.doi.org/10.1029/2004GL021497
Language: English
Additional information: Copyright 2005 by the American Geophysical Union
Keywords: Scattering, Planets
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics
URI: https://discovery.ucl.ac.uk/id/eprint/140334
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