We propose the continuation of our XMM survey of galaxy clusters at z<0.075located within a 40x40 sq.deg. region around the approximate location of theGreat Attractor (GA) behind the Milky Way, to explain the observed large-scaleflow toward and beyond the GA. All but one of our target clusters are newdiscoveries, found in the course of the CIZA X-ray cluster survey. Our totalsample of 16 represents a complete census of the most X-ray luminous and thuspresumably most massive clusters in this region. The proposed observations willallow us to measure accurate cluster masses, which in turn will permit areconstruction of the local gravitational field that is independent of andcomplementary to the one based on the density of IRAS-selected field galaxies.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2003-12-21T06:43:05Z/2004-08-27T16:22:37Z
Version
17.56_20190403_1200
Mission Description
The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs 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 Earths 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.
European Space Agency, Dr HARALD EBELING, 2005, 'CIZA: WEIGHING THE LARGEST MASS CONCENTRATIONS IN THE GREAT ATTRACTOR REGION', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-lxm2fca
