| Name | 065345 |
| Title | Testing the Origin and Evolution of Fossil Groups of Galaxies with XMM-Newton |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0653450101 |
| DOI | https://doi.org/10.5270/esa-gb3z7kz |
| Author | European Space Agency |
| Description | Fossil groups (FGs) present a puzzle to current theories of structure formation. Despite the low number of bright galaxies, their high sigma and high gas T_X indicate cluster-like potential wells. The measured c200 seem are high indicating early formation epochs, in contradiction with the observed lack of large cool cores. There are few FGs with deep X-ray data to date, and their idiosyncratic characteristics may contribute to enhance these apparent contradictions. To zero in on their origin and formation mechanisms it is fundamental to increase the number of FGs with good quality X-ray data. Here, we propose to build the 1st large X-ray sample of bona-fide FGs. True diffuse emission has been verified through 2 Chandra programs. This will allow us to significantly constrain FG.s formation mechanisms. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2010-05-10T14:01:27Z/2010-11-29T07:30:45Z |
| 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 | 2011-12-22T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2011, Testing The Origin And Evolution Of Fossil Groups Of Galaxies With Xmm-Newton, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-gb3z7kz |