| Proposal ID | 020398 |
| Title | GALAXY CLUSTERS WITH OFFSET CORES |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0203980101 |
| DOI | https://doi.org/10.5270/esa-7oshdbd |
| Principal Investigator, PI | Dr IRINI SAKELLIOU |
| Abstract | In almost all relaxed clusters, the X-ray emission is centred on a brightgalaxy. However, from the most extensive study of cluster morphology available,based on Einstein data, we find a small class of clusters (just 2%) for whichthis is not the case. These clusters offer the best opportunity to studyimportant but elusive phenomena which follow the disturbance of a cluster by amerger event (eg. shock compression, galactic wakes). The rarerity of theseobjects reflects that these phenomena are short-lived (for comparison, the shockcompression period lasts less than 1Gyr). We propose to image such clusters withEPIC in order to discriminate between several interesting possible explanationsfor their aberrant morphology. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2004-02-11T19:56:26Z/2004-02-12T07:18:22Z |
| 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 | 2005-04-27T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "einstein data", "shock compression", "EPIC", "cluster morphology", "merger event eg", "short lived", "objects reflects", "bright galaxy", "galactic wakes", "aberrant morphology", "xray emission", "galaxy cluster", "elusive phenomena", "offset cores", "relaxed clusters" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr IRINI SAKELLIOU, 2005, 'GALAXY CLUSTERS WITH OFFSET CORES', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-7oshdbd |