We have demonstrated for the first time the ability of the XMM-Newton RGSinstruments to measure or place limits on turbulence in galaxy clusters. Wepropose to observe five targets chosen to provide excellent limits on turbulencein galaxy clusters. They are bright, have cool cores and are point-like withrespect to the XMM-RGS and should have bright narrow emission lines. We expectto obtain limits or measurements between 340-480 km/s (90% uncertainty) in theseclusters. These are the best direct limit on turbulence in the intraclustermedium we can obtain before the launch of ASTRO-H and IXO. An importantsecondary objective will be to study AGN feedback in luminous cluster cores. Wewill be able to determine whether AGN feedback matches cooling to better than 10%.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2011-11-18T13:14:38Z/2011-12-29T03:29:24Z
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, 2013, 'Measuring and constraining turbulence in galaxy clusters using XMM-RGS', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-ko75ceb
