|Title||Detecting the Warm-Hot Intergalactic Medium in the Hercules Supercluster|
|Author||Dr Taotao Fang|
|Description||The "Missing Baryons", in the form of the Warm-Hot Intergalactic Medium (WHIM), represent a fundamental challenge to the current theory, and a detection of the WHIM in X-ray that is generally accepted has remained elusive. Recently, our joint Chandra and XMM observations revealed a WHIM absorption produced by a known large-scale structure (Sculptor Wall) at high significance (4.2-sigma), demonstrating that superstructures are probably the best locations to detect the WHIM. To assess whether this result is typical, we propose an observation of Mkn 501, a blazar located behind the Hercules Supercluster. The combination of the strong flux and the foreground superstructure makes Mkn 501 the most promising target, with a relatively low expense of telescope time (150virgulks).|
|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, 2012-03-19T00:00:00Z, 065257, 17.56_20190403_1200. https://doi.org/10.5270/esa-15hhqx2|