| Proposal ID | 050202 |
| Title | Quest for the WHIM in the filament connecting the pair of clusters A222 and A223 |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0502020101 |
| DOI | https://doi.org/10.5270/esa-tlfti24 |
| Principal Investigator, PI | Mr Norbert Werner |
| Abstract | We propose to observe the pair of rich clusters of galaxies A 222/223 at aredshift of z=0.21, to investigate the physical properties of the warm-hotintergalactic medium (WHIM) bridge, which physically connects both clusters. Wewill determine its temperature and put constraints on its oxygen abundance anddensity. As a diagnostic tool we will use the OVII line emission, which isformed at the temperatures expected to occur in filaments between two massiveclusters. The high redshift, a relatively high density of the WHIM in the bridgeconnecting the two clusters and the orientation of the filament approximatelyalong our line of sight make A 222/223 one of the most promising targets tounambiguously detect the WHIM for the first time in emission. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2007-06-18T08:03:12Z/2007-06-23T04:27:50Z |
| 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 | 2008-07-07T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "massive clusters", "physically connects", "filament approximately", "diagnostic tool", "bridge connecting", "rich cluster", "promising targets", "ovii line emission", "physical properties", "filament connecting", "oxygen abundance", "cluster a222" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Mr Norbert Werner, 2008, 'Quest for the WHIM in the filament connecting the pair of clusters A222 and A223', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-tlfti24 |