|Title||Finishing a representative sample of local galaxy groups|
|Author||Dr Ming Sun|
|Description||Galaxy groups are ideal systems to study baryon physics, which is important for both using clusters for precision cosmology and understanding galaxy formation and evolution. Over the last decade, our understanding on the ICM properties of galaxy groups has been greatly improved. However, there is no a representative group sample with Chandra or XMM that allows full coverage to r_500. We defined such a sample of 13 galaxy groups that are X-ray luminosity selected from the 400 deg^2 survey (REGOS4). The low-L_X bin was approved in the last XMM cycle. Complete Chandra coverage (mostly short exposures) and other supporting data have also been obtained. We now propose to observe the high-L_X bin with XMM to finish REGOS4 and ensure a continuous L_X coverage from REXCESS to REGOS4.|
|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, 2011-08-24T00:00:00Z, 065377, 17.56_20190403_1200. https://doi.org/10.5270/esa-xwrbh92|