|Title||The nature of the nuclear and extended emission in NGC 5643|
|Author||Prof Giorgio Matt|
|Description||We propose a 50 ks XMM-Newton observation of the Seyfert 2 galaxy, NGC 5643, with the aim of answering two questions left unanswered by the previous, much shorter (less than 10 ks) XMM-Newton observation. In particular, we want to: a) Measure the O vii triplet with sufficient signal-to-noise to unambiguously distinguish between photoionized and collisionally ionized matter. Contrary to most other Seyferts, in this source collisional plasma seems to dominate, but the previous measures are inconclusive. b) Distinguish between the two alternative models for the hard X-ray emission, i.e. nuclear emission plus scattering component or partially absorbed Compton reflect ion. This will help us to better understand the nature and morphology of the obscuring matter.|
|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, 2010-08-26T00:00:00Z, 060142, 17.56_20190403_1200. https://doi.org/10.5270/esa-r2z0lnm|