|Title||X-ray Emission from Uranium Stars|
|Author||Dr Eric M. Schlegel|
|Description||Recent observations have revealed the presence of uranium in two ultra-metal-poor halo stars. Qian & Wasserburg (2001) speculate that uranium requires the stars to have been, at one time, members of a binary system in which the more massive component detonated in a supernova explosion, peppering the still-evolving companions with r-processed material. Assuming the binaries survived the explosion, they should contain X-ray emitting compact stars. XMM-Newton observations will test this scenario.|
|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, 2005-01-17T00:00:00Z, 014806, 17.56_20190403_1200. https://doi.org/10.5270/esa-qtg4jks|