We propose to continue our programme of deep RGS observations by observing thenext best three clusters spanning a range of redshift, luminosity andtemperature in order to make definitive statements about the range oftemperature in the clusters and the level of cooling. All three clusters havecool cores, short central cooling times and central radio sources. The mainspectral target is the FeXVII emission lines at 15 and 17A, the ratio of whichdepends on the gas temperature in the 3-7 million K range. In the case of A1835we shall for the first time probe mass cooling rates similar to the observedstar formation rate. These observations will exploit the unique capability ofthe RGS, and build on one of XMM.s major discoveries.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2008-07-15T08:03:47Z/2008-07-26T18:09:57Z
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 Jeremy Sanders, 2009, 'The X-ray coolest gas in cool core clusters', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-maob1mr
