| Name | 040192 |
| Title | A2440 : Compact Merger just before Collapse |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0401920101 |
| DOI | https://doi.org/10.5270/esa-ihiezm9 |
| Author | European Space Agency |
| Description | The physics of the compression wave forming at the beginning of major cluster mergers is still not fully understood because of the lack of X-ray observations of equal mass merging clusters close enough but before the first maximum core collapse. We propose to observe with XMM-Newton a carefully selected cluster displaying the densest bi-modal distribution in the optical and X-ray. These data and parallel optical observations will allow, in conjunction with two others already observed bi-modal clusters, for the first time to directly determine the physical conditions (such as density, temperature, gas mixing) in the compressed hot gas and the interplay of the compression waves with the star formation rates of the galaxies. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2006-11-18T21:18:52Z/2006-11-19T10:17:23Z |
| 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 | 2007-12-12T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2007, A2440 : Compact Merger Just Before Collapse, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-ihiezm9 |