|Title||BARYON BUDGET IN 2 KEV GALAXY GROUPS|
|Author||Dr ALLAN HORNSTRUP|
|Description||We propose XMM EPIC observations of 3 typical X-ray selected galaxy groups. Our objects are both bright and sufficiently distant (z=0.10-0.13) so that they each can be detected to their virial radius in a single pointing. The XMM observations will provide accurate mass profiles to r_500. In combination with the already obtained optical observations, we will be able to establish the baryon budget in T = 2 keV groups, accurately calibrating the M-T relation at group scale, and quantifying any trends in the baryon fraction from rich clusters to groups. These data will have important implications for the thermal history of the intergalactic medium and cluster-based cosmological tests, complementing ongoing cluster surveys focusing on rich clusters.|
|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, 2005-12-03T00:00:00Z, 020634, 17.56_20190403_1200. https://doi.org/10.5270/esa-r65uut2|