|Title||Direct detection of gas motions in the Perseus core with XMM-Newton|
|Author||Dr Silvano Molendi|
|Description||Unbeknownst to most but not all the EPIC MOS detectors can be used to detect subsonic gas motions in cluster cores. From our work on calibration data we find that the relative energy across the EPIC MOS detectors can be reconstructed with a precision better than sim 1.5 eV. This can be used to detect velocities in excess of sim 70 km-s in cluster cores from the Fe K alpha line. From the analysis of a public Perseus observation we find various indications of gas motions with typical velocities of the order of a few 100 km-s. Our analysis of the Perseus motions is however limited by the statistics of the observation, we therefore request a new, longer, Perseus observation to secure sufficient counts to measure velocity shifts down to sim 200 km-s.|
|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, 2007-02-23T00:00:00Z, 030578, 17.56_20190403_1200. https://doi.org/10.5270/esa-1agywiu|