Proposal ID | 055286 |
Title | Determining Temperatures of DLS Shear-Selected Galaxy Clusters |
Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0552860101 |
DOI | https://doi.org/10.5270/esa-675n7rp |
Principal Investigator, PI | Prof John P. Hughes |
Abstract | The Deep Lens Survey (DLS) is a deep, multicolor (BVRz), wide area, opticalimaging survey that is producing a new sample of massive galaxy clusters,selected purely based on their weak lensing shear. The main goal of theseXMM-Newton observations is to measure the intracluster gas temperatures of X-rayclusters in the DLS sample that we have identified using Chandra. The newobservations will allow us to construct an X-ray luminosity-temperaturecorrelation from the mass-selected DLS clusters for comparison with the knowncorrelation from purely X-ray selected samples. This is a critical test of thefair sample hypothesis, which underlies several cosmological tests using galaxyclusters. |
Publications |
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Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
Temporal Coverage | 2008-12-24T16:29:28Z/2008-12-25T07:29:53Z |
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 | 2010-01-29T00:00:00Z |
Last Update | 2025-01-27 |
Keywords | "dls sample", "dls shear", "xray cluster", "xmm newton", "massive galaxy clusters", "fair sample hypothesis", "XMM-Newton", "optical imaging survey", "weak lensing shear", "cosmological tests", "XMM", "intracluster gas temperatures", "galaxy clusters", "determining temperatures", "dls cluster", "purely xray" |
Publisher And Registrant | European Space Agency |
Credit Guidelines | European Space Agency, Prof John P. Hughes, 2010, 'Determining Temperatures of DLS Shear-Selected Galaxy Clusters', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-675n7rp |