Proposal ID | 067291 |
Title | Are massive clusters always X-ray luminous? |
Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0672910101 |
DOI | https://doi.org/10.5270/esa-f7e9t0h |
Principal Investigator, PI | Dr Ming Sun |
Abstract | Studies of galaxy clusters are important for both cosmology and the formation ofbaryonic structures. An important relation in cluster science is the f_gas - Mrelation. However, the cluster samples used to constrain this relation are X-rayselected and the current XMM and Chandra archives are also heavily biased toX-ray selected clusters. To address this important bias, we construct a sampleof 11 most massive clusters from the SDSS-C4 cluster catalog. Six of them havebeen observed by XMM or Chandra but they are all X-ray luminous, while the fiveunobserved clusters are X-ray faint. We propose to observe these five clustersto search for X-ray faint, massive cluster, with potentially importantimplications on the cluster mass - proxy relations. |
Publications |
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Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
Temporal Coverage | 2011-07-31T01:27:26Z/2011-07-31T06:26:02Z |
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 | 2012-08-19T00:00:00Z |
Last Update | 2025-01-27 |
Keywords | "cluster science", "heavily biased", "xray luminous", "SDSS", "xray luminous ?.", "massive cluster", "chandra archives", "xray faint", "galaxy cluster", "cluster samples", "baryonic structures", "XMM" |
Publisher And Registrant | European Space Agency |
Credit Guidelines | European Space Agency, Dr Ming Sun, 2012, 'Are massive clusters always X-ray luminous?', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-f7e9t0h |