|Title||Metal Abundance of A1674: search for Hot Primordial gas in a cluster of galaxies|
|Author||Dr Kiyoshi Hayashida|
|Description||A1674 is a richness class 3 cluster at z=0.106 with fairly low X-ray luminosity of 5e43 erg-s. ASCA observation of this cluster revealed its low metal abundance (90% upper limit of 0.2 Solar). Moreover, its optical magnitude-color diagram implies deficiency of elliptical galaxies in this cluster, suggesting A1674 could provide valuable support for the hypothesis that metal in the cluster hot gas is mainly supplied by elliptical galaxies. With XMM observation of this cluster, we aim to determine the metal abundance of the hot gas within an error of 0.05 Solar. If the low metal abundance is confirmed, it would lead to a discovery of hot primordial gas in the universe.|
|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, 2003-06-17T00:00:00Z, 013600, 17.56_20190403_1200. https://doi.org/10.5270/esa-8ct0h7j|