Observations in the temporal domain open up new windows on astrophysics thatsnapshot observations simply cannot address. We propose an eclipse timing androtational modulation observation of the RS CVn system XY UMa to further ourinvestigations of the morphologies of active stellar atmospheres. Earliereclipse mapping observations have given contradictory results: sometimes thecoronae appear compact (solar-like), at other times they appear extended.Uninterrupted observations longer than the stellar rotation period are needed toensure a view of the quiescent corona amidst the frequent flaring. Observationsspanning 3 stellar orbits will reveal the coronal scale heights, latitudes, andspatial scales down to 100,000 km, or about 5% of the stellar radius.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2005-03-28T23:10:22Z/2005-03-30T03:40:22Z
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, Prof FREDERICK M. WALTER, 2006, 'ECLIPSE MAPPING OF XY UMA', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-zqb47ru
