| Proposal ID | 072189 |
| Title | Complete High Precision Study of Galaxy Clusters for Modern Cosmology |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0721890101 |
| DOI | https://doi.org/10.5270/esa-2cu6ydi |
| Principal Investigator, PI | Dr Yu-Ying Zhang |
| Abstract | We request 109virgulks data for 4 clusters to complete a volume-limited sample of 51clusters at 0.15<z<0.3. Our investigation of the existing data hints massdependence of the systematic biases in the X-ray to weak lensing mass ratios.The X-ray mass proxies, e.g., Yx, show low scatter against mass, but thebest-fit scaling relations are likely biased by the noted mass-dependence. Themain limitation of our program is that we have not yet observed the full sample,and thus application of our results to future surveys will be undermined byinadvertent selection biases. We propose to complete this joint X-ray, lensing,dynamics, and SZ effect study, testing for mass/radial dependence of the massbias. We will deliver definitive constraints on systematics for upcoming cluster cosmology surveys. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2013-07-17T02:49:13Z/2013-12-30T21:52:10Z |
| 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 | 2015-01-20T23:00:00Z |
| Keywords | " yx", "inadvertent selection biases", "modern cosmology", "xray mass proxies", "deliver definitive constraints", "systematic biases", "cluster cosmology surveys", "noted mass", "galaxy cluster", "sz effect", "mass bias", "future surveys", "main limitation", "low scatter", ".", "volume limited sample", "fit scaling relations" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Yu-Ying Zhang, 2015, 'Complete High Precision Study of Galaxy Clusters for Modern Cosmology', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-2cu6ydi |