We propose to observe the two merging galaxy groups that comprise Abell 2197,which optically mimics a rich, nearby (z=0.03) cluster. While severalcluster-cluster mergers have been studied in great detail, group-group mergersremain poorly understood. Combined with archival XMM-Newton and Chandraobservations, these observations also will complete a survey of bound subsystemsin the A2199 supercluster where A2197W and A2197E reside. These data willprovide insights into the merger process on group scales and also reveal themass distribution of subsystems within a supercluster.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2004-09-07T09:56:19Z/2004-09-23T16:17:27Z
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 CHRISTINE JONES, 2005, 'MERGING GROUPS A2197W AND A2197E', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-9f0bu8a
