We propose to observe two young fast rotating stars observed with ROSAT in thesupersaturation regime. We aim at detecting rotational modulation in their X-rayemission as recently found for VXR45, a star with similar rotational propertiesobserved by us with XMM/Newton. If rotational modulation is a generalcharacteristic of supersaturated stars, we will be able to determine thepresence of an asymmetric distribution of coronal structures in such stars andfrom their (or lack of) spectral variations, to infer the characteristics ofsuch structures constraining the properties of the underlying dynamo.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2004-10-18T15:58:57Z/2004-10-19T14:32:31Z
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 GIUSEPPINA MICELA, 2005, 'CORONAL EMISSION FROM SUPERSATURATED STARS', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-4cn63xp
