|Title||The coronal properties of an exceptionally luminous quasar at z=0.821|
|Author||Dr Elias Kammoun|
|Description||High luminosity quasars are unique laboratories to test our understanding of X-ray coronae in AGN. We propose joint XMM-Newton and NuSTAR observations of a luminous, optically-selected, non-jetted quasar at z=0.821. Our main goal is to measure the high-energy cutoff in its X-ray spectrum, hence constraining, in the framework of Comptonization models, its coronal temperature and optical depth. This will allow us to test whether the same physical conditions hold in quasars at luminosities and masses 100 times higher than those probed in so far in the nearby Universe, exploring the unknown X-ray properties of the quasar population at intermediate redshifts (z = 0.1-1), constituting half the age of the Universe.|
|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, 2022-02-16T00:00:00Z, 087091, 18.02_20200221_1200. https://doi.org/10.57780/esa-zi2tt20|