publication 23-May-2019 11:59:23

Solar control on Jupiter's equatorial X-ray emissions

Publication date: 18 January 2005

Authors: Bhardwaj, A., Branduardi-Raymont, G., et al.

Journal: Geophysical Research Letters
Volume: 32
Year: 2005

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.

Link to Publication: /science-e/www/object/doc.cfm?fobjectid=36694


Last Update: 17 May 2006

For further information please contact: SciTech.editorial@esa.int