We propose to observe a Planck SZ selected, complete sample of 15 X-ray under-luminous galaxy clusters with XMM-Newton. This largely unstudied population ofgalaxy clusters has important consequences for cosmology. Moreover, since theunder-luminous clusters are expected to be undergoing major mergers, this sampleprovides a great opportunity to quantify energy re-distribution among thermaland non-thermal particles, study heat transport and enrichment evo- lution. Werequest 175ks of XMM-Newton time to cover the 11 clusters which lackgood-quality observations. With these data, we will determine their dynamicalstate and history, examine the processes responsible for gas heating, andmeasure the impact of such powerful mergers on cosmological studies.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2018-06-15T19:37:30Z/2019-02-19T12:13:11Z
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 Gerrit Schellenberger, 2020, 'Are we missing the X-ray under-luminous clusters', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-rqc1bpg
