We propose to utilize the unparalleled sensitivity of XMM in the soft X-rayrange for the first ever X-ray study of Ceres. The first definitive detection ofa water vapor exosphere around this nearest Dwarf Planet, which succeeded justrecently with Herschel, makes Ceres a most interesting target for X-ray studies,because, as we have already demonstrated with XMM observations of Mars andcomets, solar wind charge exchange induced X-rays are a most sensitive tracer oftenuous amounts of gas. AO-14 will be particularly favorable, because Dawn willthen be in orbit around Ceres, providing the unique chance of combining remoteglobal observations with simultaneous in-situ measurements. Due to the solarcycle, AO-14 will also offer the best opportunity for X-ray studies before 2022.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2015-05-15T12:04:28Z/2015-05-16T08:31:07Z
Version
17.56_20190403_1200
Mission Description
The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs second cornerstone of the Horizon 2000 Science Programme. It carries 3 high throughput X-ray telescopes with an unprecedented effective area, and an optical monitor, the first flown on a X-ray observatory. The large collecting area and ability to make long uninterrupted exposures provide highly sensitive observations. Since Earths atmosphere blocks out all X-rays, only a telescope in space can detect and study celestial X-ray sources. The XMM-Newton mission is helping scientists to solve a number of cosmic mysteries, ranging from the enigmatic black holes to the origins of the Universe itself. Observing time on XMM-Newton is being made available to the scientific community, applying for observational periods on a competitive basis.
European Space Agency, Dr Konrad Dennerl, 2016, 'First X-ray observation of the water vapor exosphere of Ceres', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-yioow3i
