Probing the cosmic mean density and the evolution of structure in the Universe is currently one of the most interesting tasks of observational cosmology. Based on a complete sample of the most massive clusters in the redshift interval z = 0.27 - 0.31 found in the most extensive X-ray cluster survey, the REFLEX Survey, we propose XMM observations to probe the speed of structure growth and the mean density of the Universe. We demonstrate that the results will be conclusive in distinguishing cosmological scenarios and the exposure of 130ksec will be well spent to provide an important cosmological results right
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2001-02-16T06:56:29Z/2002-10-07T21:43:38Z
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 Hans Boehringer, 2003, 'Testing the Cosmic Mean Density with the Cluster Temperature Function at zvirgul0.3', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-3527snn
