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19 April 2024 |
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Solar Control on Jupiter's Equatorial X-ray Emissions: 26-29 November 2003 XMM-Newton Observation | | Anil Bhardwaj
; Graziella Branduardi-Raymont
; Ronald F. Elsner
; G. Randall Gladstone
; Gavin Ramsay
; Pedro Rodriguez
; Roberto Soria
; J. Hunter Waite Jr.
; Thomas E. Cravens
; | | Date: |
29 Apr 2005 | | Journal: | Geophys.Res.Lett. 32 (2005) L03S08 | | Subject: | astro-ph | | Abstract: | During November 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 lightcurves 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. | | Source: | arXiv, astro-ph/0504670 | | Services: | Forum | Review | PDF | Favorites | |
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