Observations of massive cooling core clusters and of giant elliptical galaxiesindicate that the cold gas in these systems may be produced chiefly by thermallyunstable cooling from the hot phase. Recently, there have been considerablenumerical efforts to study thermally unstable cooling from the hot into the coldphase. The properties of cooling in the presence of significant angular momentumare, however, likely to be different from cooling in non-rotating atmospheres.Here, we propose a 50 ks observation of NGC 7049, a nearby central group galaxywith a rotating disk of dusty cold gas. We will test predictions for coolinginstabilities in systems with significant angular momentum.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2015-04-03T17:58:09Z/2015-04-04T13:41:29Z
Version
17.56_20190403_1200
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, Dr Norbert Werner, 2016, 'Cooling and heating in rotating hot X-ray emitting atmospheres', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-9l1t40o
