|Title||Cold Fronts in Hot Clusters|
|Author||Dr Jimmy Irwin|
|Description||The existence of cold fronts in galaxy clusters is an intriguing but currently unexplained phenomenon. In some instances, the observational evidence supports the idea that the cold core is the remnant of a subcluster merger with the main cluster. However, this seems unlikely in cases where the cluster contains multiple cold fronts or looks very relaxed, in which case the oscillation of the cluster core in its potential well might better explain the cold front. These competing scenarios can be discriminated through a search for temperature and chemical signatures across the cold front. We propose exposures of two hot clusters; Ophiuchus (second brightest X-ray cluster) and RXJ1720.1+2638, which are natural testbeds for testing and clarifying competing cold front models.|
|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, 2008-09-27T00:00:00Z, 050067, 17.56_20190403_1200. https://doi.org/10.5270/esa-sff7f09|