|Title||Abell 545 an uncommon merging cluster|
|Author||Dr Sabrina De Grandi|
|Description||Detailed studies of A545 at radio, optical and X-ray wavelengths point to a system undergoing a major merger. The unique discovery of an extended stellar halo resembling that of a cD but with no associated BCG is particularly intriguing as it suggests this system may be undergoing a critical dynamic phase that is rarely observed. The available XMM data while hinting to a number of interesting features, most notably a shock virgul400 kpc North of the surface brightness peak, are of limited use because of the extreme contamination by soft protons. We propose a 50 ks observation of A545 to constrain the phase and geometry of the merger. The combination of the proposed X-ray observation with the available optical and radio data will allow us to construct a global picture of the dynamical status of A545.|
|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, 2012-09-29T00:00:00Z, 067467, 17.56_20190403_1200. https://doi.org/10.5270/esa-248m35d|