| Name | 074394 |
| Title | Optimally Mapping a Poor Cluster to its Virial Radius with XMM-Newton |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0743940101 |
| DOI | https://doi.org/10.5270/esa-iptbmem |
| Author | European Space Agency |
| Description | We recently published a Suzaku study of poor cluster ESOvirgul3060170 out to itsvirial radius. Its entropy profiles are flatter than expected from purelygravitational processes, as also seen massive clusters, perhaps being due toclumpy gas. The baryon fraction of this system is 0.13 within its Rvir, muchsmaller than the cosmic value. The flux of the CXB exceeds that of hot gas inthe outskirt; we need higher quality observations to resolve out much of theCXB. We propose two orthogonal XMM pointings out to Rvir, in order to mitigatepoint sources and attain a complete azimuthal coverage. If the entropy behavioris verified, it will imply that clumpy gas occurs down to the scale of galaxygroups, and groups can have significantly smaller baryon fraction than clusters. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2014-09-25T17:37:09Z/2014-10-31T06:00:54Z |
| 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 | 2015-11-13T23:00:00Z |
| Keywords | XMM-Newton, OM, RGS, EPIC, X-ray, Multi-Mirror, SAS |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2015, Optimally Mapping A Poor Cluster To Its Virial Radius With Xmm-Newton, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-iptbmem |