A dataset provided by the European Space Agency

Name 050202
Title Quest for the WHIM in the filament connecting the pair of clusters A222 and A223


DOI https://doi.org/10.5270/esa-tlfti24
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
Temporal Coverage 2007-06-18T08:03:12Z/2007-06-23T04:27:50Z
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 2008-07-07T00:00:00Z
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