Hot Jupiters are gas giant extrasolar planets close to their host stars. In twostellar systems with hot Jupiters, a cyclic variation of chromospheric activitysynchronized to the planet.s revolution, and not to the stellar rotation, wasobserved. The proposed mechanism to explain this activity enhancement is amagnetic interaction between the star and the hot Jupiter. The extrasolar planetWASP-18b is the first confirmed hot Jupiter that has an orbital period of lessthan one day; it is orbiting only 2.6 stellar radii above the stellar surface.Moreover, WASP-18 is one of the youngest known planet-hosting star. We propose ashort observation of WASP-18 to characterize its X-ray flux and temperature inorder to prepare a future longer X-ray observation of this remarkable system.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2011-06-10T06:42:40Z/2011-06-10T08:46:18Z
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 Nicolas Grosso, 2012, 'Preliminary detection of the X-ray emission from WASP18', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-k4r2qjb
