We propose to observe a cool core cluster of modest X-ray luminosity which hasover 10^10 Msun of cold molecular gas in its X-ray cool core. ALMA data indicatethat the cold gas is exceptionally disturbed and situated 5 kpc from thenucleus. If, as Hitomi has shown in the Perseus cluster, the cold gas and ICMshare the same velocity field, then we shall measure velocity broadening of theX-ray emission lines with the XMM RGS. Star formation of about 40 Msunpyr isinferred from optical and IR data and a central cooling time of less than 5x10^6yr. A cooling flow at that rate will be detectable.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2021-10-13T09:13:32Z/2021-10-22T05:32:35Z
Version
PPS_NOT_AVAILABLE
Mission Description
The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs 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 Earths 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.
European Space Agency, Prof Andrew Fabian, 2022, 'The cooling rate and velocity dispersion in the cool core cluster RXJ0821', PPS_NOT_AVAILABLE, European Space Agency, https://doi.org/10.57780/esa-g0jui0b
