|Title||Shedding new light on cooling flow clusters|
|Author||Dr Silvano Molendi|
|Description||The first XMM-Newton observations have revolutionised our view of the cores of galaxy clusters. Several objects show a remarkable absence of lines expected from gas cooling below 1-2 keV. This result seems at odds with recent millimetric observations, which actually reveal that at least some clusters do host sizeable amounts of cooled matter. Here we propose the observation of a selected sample of 3 galaxy clusters, namely A1068, RXJ0821+07 and A1651, two of which have the best detections of CO so far and the third with X-ray properties similar to those of the first two but showing no evidence of cooled gas. Moreover we will analyze the outer regions of the above systems to ascertain if their temperature profiles drop, as suggested by BeppoSAX data, or remain constant.|
|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, 2004-06-14T00:00:00Z, 014763, 17.56_20190403_1200. https://doi.org/10.5270/esa-rtuarzf|