|Title||XMM Observations of NuSTAR-observed Heavily Obscured Quasars at z < 0.5|
|Author||Mr George Lansbury|
|Description||Heavily obscured, candidate Compton-thick QSO2s (CTQSO2s) are an extremely challenging class of objects to study at X-ray wavelengths. Five optically selected CTQSO2 candidates have been detected with NuSTAR but, at present, only two of these have sufficient broad-band (0.5-24 keV) X-ray data for reliable spectral modelling, which in each case results in the identification of Compton-thick material. We propose 60 ks XMM-Newton observations of two more objects that would double the number of NuSTAR-detected CTQSO2 candidates with high quality spectral modelling. The proposed XMM-Newton observations have the power to distinguish between Compton-thick and Compton-thin absorption, thus improving our understanding of the Nh distribution of QSO2s.|
|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, 2016-11-12T23:00:00Z, 076491, 17.56_20190403_1200. https://doi.org/10.5270/esa-vwg5tri|