|Title||CONSTRAINING THE NON-LOCAL COMPTON THICK AGN FRACTION IN THE NUSTAR 8-24 KEV BAN|
|Author||Dr Luca Zappacosta|
|Description||Through a joint NuSTAR+XMM-Chandra spectroscopic analysis we have obtained the column density (Nh) distribution for a sample of 63 bright hard-band detected AGN selected in the NuSTAR survey fields. This is the most sensitive Compton Thick (CT) AGN search to date from a blind >10 keV sample. The two faintest candidates for being the most obscured AGN in the sample lack low-energy data and have Nh upper-lower limits consistent with being heavily obscured-CT. We are proposing a joint NuSTAR+XMM observation of these sources in order to complete the CT census. This will effectively double the observed fraction of CT AGN in our sample and will give us the opportunity to challenge X-ray Background population synthesis models directly aiming at the major contributors to the 20-30 keV peak.|
|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, 2018-12-15T23:00:00Z, 079561, 17.56_20190403_1200. https://doi.org/10.5270/esa-dbl8kws|