| Proposal ID | 060431 |
| Title | New local Compton-thick AGN from the deepest INTEGRAL survey |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0604310101 |
| DOI | https://doi.org/10.5270/esa-h57gx2c |
| Principal Investigator, PI | Dr Stephane Paltani |
| Abstract | Accretion is recognized to play a significant role in galaxy evolution. Theorypredict the existence of deeply buried AGN. The cosmic X-ray background stronglysupports the existence of very absorbed, Compton-thick AGN; however, very few ofthem have been detected in hard X-ray surveys. We propose to observe 6 very goodCompton-thick candidates detected in the deepest extragalactic survey performedby INTEGRAL. These sources have been confirmed in short Chandra observations.Their hard-to-medium X-ray flux ratios are larger by a factor 5-10 than thoseexpected for an unabsorbed, G=1.9 power law. These observations will verystrongly constrain the fraction of Compton-thick AGN at the faintest hard X-rayfluxes, making a stringent test of X-ray background synthesis models. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2009-06-15T06:59:01Z/2009-07-14T15:25:27Z |
| 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 | 2010-08-04T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "galaxy evolution", "compton thick candidates", "stringent test", "cosmic xray background", "compton thick agn", "deepest integral survey", "theory predict", "deeply buried agn", "hard xray surveys", "power law", "short chandra" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Stephane Paltani, 2010, 'New local Compton-thick AGN from the deepest INTEGRAL survey', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-h57gx2c |