|Title||X-RAY GALAXY HALOS AS A CONSEQUENCE OF INFALLING OR OUTFLOWING GAS?|
|Author||Prof RALF-JUERGEN DETTMAR|
|Description||Current cosmological models predict gaseous X-ray halos in star forming spiral edge-on galaxies as a consequence of infalling hot gas from the halo onto the disk. In complete contradiction are models of the ISM, because they attribute the presence of hot halo gas to star forming activity in the disk and assume a large scale transport of matter from the disk into the halo. In order to test the second scenario we propose to use XMM-Newton and observe the X-ray emission of three edge-on galaxies known to possess extended diffuse ionized gas (DIG) and radio continuum halos and search for associated star formation induced hot X-ray halos. This, together with previously obtained multi-wavelength observations would allow us to check the infall vs. the outflow model.|
|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, 2005-07-16T00:00:00Z, 020273, 17.56_20190403_1200. https://doi.org/10.5270/esa-swj2upk|