Name | 072189 |
Title | Complete High Precision Study of Galaxy Clusters for Modern Cosmology |
URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0721890101 |
DOI | https://doi.org/10.5270/esa-2cu6ydi |
Author | Dr Yu-Ying Zhang |
Description | We request 109virgulks data for 4 clusters to complete a volume-limited sample of 51 clusters at 0.15<z<0.3. Our investigation of the existing data hints mass dependence 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 the best-fit scaling relations are likely biased by the noted mass-dependence. The main 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 by inadvertent selection biases. We propose to complete this joint X-ray, lensing, dynamics, and SZ effect study, testing for mass/radial dependence of the mass bias. We will deliver definitive constraints on systematics for upcoming cluster cosmology surveys. |
Publication | No observations found associated with the current proposal |
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 Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's 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 Earth's 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 |
Publisher And Registrant | European Space Agency |
Credit Guidelines | European Space Agency, Dr Yu-Ying Zhang, 2015, 072189, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-2cu6ydi |