| Proposal ID | 015127 |
| Title | The concentration-mass relation in galaxy clusters |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0151270201 |
| DOI | https://doi.org/10.5270/esa-q43jdm7 |
| Principal Investigator, PI | Dr Edward Lloyd-Davies |
| Abstract | The concentration of the dark matter haloes of galaxy clusters is relatedthrough their formation times to the power spectrum of perturbations fromwhich they formed. Measurements of the variation of concentration with masstherefore provide interesting constraints on cosmological models. Howeverpresently accepted observations of XMM will be able to accurately measureconcentrations over a limited mass range of about 10^14-10^15 solar masses.We propose to supplement this with observations of galaxy groups in the range10^13-10^14 solar masses in order to more precisely measure the slope andpossible curvature of the relation. Constraints on individual formation timescan be correlated with system properties to probe other physical processes. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2003-10-12T08:13:57Z/2003-10-14T02:07:15Z |
| 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. |
| Creator Contact | https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk |
| Date Published | 2004-11-01T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "individual formation", "solar masses", "limited mass range", "system properties", "cosmological models", "galaxy cluster", "XMM", "power spectrum", "galaxy clusters", "physical processes", "concentration mass relation", "dark matter haloes" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Edward Lloyd-Davies, 2004, 'The concentration-mass relation in galaxy clusters', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-q43jdm7 |