| Proposal ID | 000461 |
| Title | RXJ1821+6828: Temperature Distribution and Metallicity for a z=0.81 cluster |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0004610101 |
| DOI | https://doi.org/10.5270/esa-fvxah55 |
| Principal Investigator, PI | Dr Isabella Gioia |
| Abstract | There are only a few X-ray selected clusters with redshift greaterthan 0.8, making each of them a prime target of studies of clusterformation. We propose to observe the cluster RXJ1821+6828 at z=0.8108,found in the NEP region of the ROSAT All-Sky Survey, to derive theX-ray temperature distribution, measure the iron abundance, andobtain an high quality image. Temperature information for high-zclusters places strong constraints on cosmological models and onthe physical processes in the early epochs of our universe. Existinglower resolution X-ray images indicate that these clusters are oftenfilamentary with the X-ray flux generated at the impact point of the |
| Publications |
|
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2002-11-09T06:38:14Z/2002-12-19T11:05:55Z |
| 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 | 2004-08-07T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "temperature information", "RXJ1821+6828", "temperature distribution", "iron abundance", "cluster formation", "quality image", "xray temperature distribution", "xray flux", "ROSAT", "cosmological models", "cluster rxj1821", "81 cluster", "prime target", "z cluster", "nep region", "physical processes", "sky survey" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Isabella Gioia, 2004, 'RXJ1821+6828: Temperature Distribution and Metallicity for a z=0.81 cluster', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-fvxah55 |