Name | 000461 |
Title | RXJ1821+6828: Temperature Distribution and Metallicity for a z=0.81 cluster |
URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0004610101 |
DOI | https://doi.org/10.5270/esa-fvxah55 |
Author | Dr Isabella Gioia |
Description | There are only a few X-ray selected clusters with redshift greater than 0.8, making each of them a prime target of studies of cluster formation. 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 the X-ray temperature distribution, measure the iron abundance, and obtain an high quality image. Temperature information for high-z clusters places strong constraints on cosmological models and on the physical processes in the early epochs of our universe. Existing lower resolution X-ray images indicate that these clusters are often filamentary with the X-ray flux generated at the impact point of the |
Publication | No observations found associated with the current proposal |
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 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 | 2004-08-07T00:00:00Z |
Publisher And Registrant | European Space Agency |
Credit Guidelines | European Space Agency, Dr Isabella Gioia, 2004, 000461, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-fvxah55 |