|Title||Our Strange Neighbors: Satellite Galaxies of the Milky Way|
|Author||Dr Matthias Ehle|
|Description||A study by Strigari et al (Nature 454, 1096 (2008)) shows the puzzling discovery that the integrated mass of the Milky Way dwarf satellites are consistent with them having a common mass of about 10^7 M_sun, suggesting that they could be the primordial building blocks in galaxy formation, introducing a new scale in galaxy formation and for the clustering of dark matter. We ask to complete XMM-Newton observations of the full sample of known dSphs in order to draw conclusions about their formation and source content deducible from their X-ray emission. The proposed programme represents an XMM-Newton legacy for the search for dark matter signatures.|
|Publication||No observations found associated with the current proposal|
|Instrument||EMOS1, EMOS2, EPN, OM, RGS1, RGS2|
|Mission Description||The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's 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 Earth's 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.
|Publisher And Registrant||European Space Agency|
|Credit Guidelines||European Space Agency, 2012-05-07T00:00:00Z, 065018, 17.56_20190403_1200. https://doi.org/10.5270/esa-ucnedc7|