There is now a great urgency to discover the nature of the dark matter (DM)which, along with the dark energy, comprise the foundation of the newcosmological paradigm. A2589 is an ideal target for X-ray studies of its DMbecause it is bright, nearby (z=0.042), and has an exceptionally smooth relaxedmorphology as revealed by the Chandra and ROSAT images. We propose an XMM-EPICobservation of A2589 to map the DM over 0.01-0.3r_vir. The radial DM densityprofile will be compared to theoretical profiles especially to address the..core controversy. for DM halos. We will also calculate the (1) ellipticity ofthe DM, (2) total gas fraction, its radial variation, and Omega_m, and (3) ironabundance profile and assess its implications for SNe enrichment using theoretical gasdynamical models.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2004-06-04T11:17:42Z/2004-06-05T00:19:29Z
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 AARON LEWIS, 2005, 'DARK MATTER IN THE RELAXED GALAXY CLUSTER A2589', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-di2qzda
