The lowest temperature galaxy groups are of special interest, since in thesesystems the energy injection from galaxy winds has the most extreme effect. Theyalso contain a large fraction of the baryons in the universe, due to their highspace density. However their low X-ray surface brightness has made them theleast observed and most poorly understood class of galaxy systems. XMM, with itslarge effective area presents the first chance to study these systems in detail.We propose to study three of the lowest temperature galaxy groups known in orderto determine their structure, and the amount and source of energy injectionwhich has profoundly affected them. We also intend to study the amount hot gasin these systems and so quantify their contribution to the global baryon budget.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2001-12-02T22:56:34Z/2002-01-11T03:29:09Z
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, Mr Edward Lloyd-Davies, 2003, 'Preheating and the lowest temperature galaxy groups', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-7cl0tm9
