|Title||DETERMINING THE TEMPERATURE OF HOT GAS IN X-RAY FAINT EARLY-TYPE GALAXIES|
|Author||Dr JIMMY IRWIN|
|Description||The temperature of the hot X-ray gas contained within early-type galaxies is an important diagnostic of the hydrodynamical processes that affect the gas. Previous studies of X-ray bright ellipticals indicate that they are all hotter than the kinetic motion of the stars, and it has been suggested that the gas is in the potential well of a massive dark matter halo that is dynamically hotter than the stars. X-ray faint galaxies have lost most of their gas, possibly because of a shallower dark matter potential well. If this is true, then the gas that does remain in these galaxies should have a temperature that more closely reflects the stellar kinetic temperature. We propose to observe three X-ray faint galaxies to determine their temperature and test this prediction.|
|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, 2006-01-27T00:00:00Z, 020509, 17.56_20190403_1200. https://doi.org/10.5270/esa-1drvvj1|