|Title||Quest for the WHIM in the filament connecting the pair of clusters A222 and A223|
|Author||Mr Norbert Werner|
|Description||We propose to observe the pair of rich clusters of galaxies A 222-223 at a redshift of z=0.21, to investigate the physical properties of the warm-hot intergalactic medium (WHIM) bridge, which physically connects both clusters. We will determine its temperature and put constraints on its oxygen abundance and density. As a diagnostic tool we will use the OVII line emission, which is formed at the temperatures expected to occur in filaments between two massive clusters. The high redshift, a relatively high density of the WHIM in the bridge connecting the two clusters and the orientation of the filament approximately along our line of sight make A 222-223 one of the most promising targets to unambiguously detect the WHIM for the first time in emission.|
|Publication||No observations found associated with the current proposal|
|Instrument||EMOS1, EMOS2, EPN, OM, RGS1, RGS2|
|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.
|Publisher And Registrant||European Space Agency|
|Credit Guidelines||European Space Agency, 2008-07-07T00:00:00Z, 050202, 17.56_20190403_1200. https://doi.org/10.5270/esa-tlfti24|