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Proposal ID 079561
Title CONSTRAINING THE NON-LOCAL COMPTON THICK AGN FRACTION IN THE NUSTAR 8-24 KEV BAN
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DOI https://doi.org/10.5270/esa-dbl8kws
Principal Investigator, PI Dr Luca Zappacosta
Abstract Through a joint NuSTAR+XMM/Chandra spectroscopic analysis we have obtained thecolumn density (Nh) distribution for a sample of 63 bright hard-band detectedAGN selected in the NuSTAR survey fields. This is the most sensitive ComptonThick (CT) AGN search to date from a blind >10 keV sample. The two faintestcandidates for being the most obscured AGN in the sample lack low-energy dataand have Nh upper/lower limits consistent with being heavily obscured/CT. We areproposing a joint NuSTAR+XMM observation of these sources in order to completethe CT census. This will effectively double the observed fraction of CT AGN inour sample and will give us the opportunity to challenge X-ray Backgroundpopulation synthesis models directly aiming at the major contributors to the 20-30 keV peak.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2017-07-04T05:00:52Z/2017-11-21T23:12:44Z
Version 17.56_20190403_1200
Mission Description The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs 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 Earths 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.
Creator Contact https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk
Date Published 2018-12-15T23:00:00Z
Keywords "NuSTAR", "obscured agn", "heavily obscured", "XMM", "kev ban", "ct agn", "bright hard band", "chandra spectroscopic analysis", "nh upper", "faintest candidates", "lower limits", "effectively double", "kev sample", "low energy data", "kev peak", "ct census", "major contributors", "nustar survey fields"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Luca Zappacosta, 2018, 'CONSTRAINING THE NON-LOCAL COMPTON THICK AGN FRACTION IN THE NUSTAR 8-24 KEV BAN', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-dbl8kws