|Title||Confirmation of a new population of cocooned AGN|
|Author||Ms Claire Greenwell|
|Description||Cocooned AGN are a new population of AGN selected with MIR properties indicative of powerful quasars, but quiescent galaxy-like optical spectra, including weak-to-absent [OIII] emission. This is likely due to AGN youth or virgul4 pi covering factor obscuring material enshrouding the AGN, but the existing minimal X-ray data has been insufficient to differentiate between these scenarios. We propose a targeted campaign of 8 of the brightest CAGN in our sample. An XMM-Newton exposure quasi-simultaneously with NuSTAR is sufficient to make this distinction, even up to Compton-thick levels of obscuration, with parameter degeneracies. These observations are essential to determine the emission mechanism responsible for the CAGN and hence push towards a complete census of black hole growth evolution.|
|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, 2022-10-12T00:00:00Z, 088408, 19.16_20210326_1200. https://doi.org/10.57780/esa-nabfd1a|