|Title||Virgo Clusters at Redshift 0.35|
|Author||Prof Megan Donahue|
|Description||The cluster X-ray L-T relationship is sensitive to feedback processes. Because L and T are used as surrogates for the cluster virial mass M, understanding the L-T and the L-T-M relations and their scatter is critical for cluster constraints on cosmological models, as well as models of galaxy and cluster evolution. We originally proposed to measure Lx and Tx for a representative sample of 13 low-Lx, low-T (2-2.6 keV) clusters at z=0.32-0.38, selected from the ROSAT 160SD survey. We will show the L-T-M relation for 6 of these clusters with weak-lensing masses obtained with HST. These clusters span the mass range between rich clusters and groups, where feedback processes play an increasingly dominant role. This is a resubmission of an accepted proposal, to repeat 2 of 8 observations.|
|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, 2014-05-11T00:00:00Z, 069167, 17.56_20190403_1200. https://doi.org/10.5270/esa-9on3euy|