|Title||Measuring sloshing, merging and feedback velocities in Centaurus and Virgo|
|Author||Dr Jeremy Sanders|
|Description||Despite its importance for understanding cluster physics, there are few direct measurements of the ICM velocity structure. Hitomi measured line broadening in Perseus through its groundbreaking high resolution spectrum, but due to its loss we may have to wait until Athena.s 2028 launch to obtain similar data. Here we propose a novel technique to use the fluorescent background emission lines seen in the EPIC-PN detector to calibrate the energy scale to a high precision and so measure bulk motions within the Virgo and Centaurus clusters. We shall reach accuracies of 100-200 km-s around the inner 7 arcmin, increasing to 400 km-s at 16 arcmin radius. Secondary aims include using the RGS grating spectra to constrain-measure the velocity of cool material around the central AGN.|
|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, 2019-01-16T23:00:00Z, 080367, 17.56_20190403_1200. https://doi.org/10.5270/esa-xg4jstg|