|Title||The Burst Cluster: Dark Matter in a Merging Cluster Host of the Short GRB050509B|
|Author||Prof Craig Sarazin|
|Description||We propose a 132 ksec XMM-Newton observations of ZwCl 1234.0+02916 (z=0.2214), a merging galaxy cluster where one of the BCGs hosted the short GRB 050509B. Our Chandra observation shows a bimodal structure, with a possible cold front at the western edge, indicating that the two subclusters are moving away from one another after first core passage. Our weak lensing analysis shows that the dark matter is also bimodal, and is centered on the two galaxy distributions, while the X-ray gas lags behind (like the Bullet cluster). XMM data will confirm the bimodal structure and will allow the measurement of the merger velocity and the study of the segregation of dark and baryonic matter. This is likely to be a high velocity collision which will constrain dark matter.|
|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, 2015-01-03T23:00:00Z, 072266, 17.56_20190403_1200. https://doi.org/10.5270/esa-tylep10|