|Title||Detailed Study of a Relaxed Galaxy Cluster at Medium Distance|
|Author||Dr Bernd Aschenbach|
|Description||GT- Some of the most interesting cosmological questions are the mean density of the Universe, the fractional mass of the baryons in the Universe, and the history of the production of the heavy elements in the frame of cosmic evolution. X-ray observations of galaxy clusters, a proper mass determination of these objects, and the measurement of elemental abundances in the intracluster medium give very important clues to these questions. To utilize XMM in an ideal way for such a study we have selected one of the X-ray brightest, relaxed clusters at medium distance which allows to cover the essential parts of the cluster in two pointings.|
|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, 2002-08-26T00:00:00Z, 010587, 17.56_20190403_1200. https://doi.org/10.5270/esa-1pwbjqy|