| Proposal ID | 050206 |
| Title | Obscured AGN beyond the local Universe |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0502060101 |
| DOI | https://doi.org/10.5270/esa-mge3rfg |
| Principal Investigator, PI | Dr Alessandra Lamastra |
| Abstract | We propose to observe with XMM-Newton, for a total of 310 ks, the Bian et al.(2006) subsample of type 2 AGN at z~0.3-0.4 for which they could estimatelambda=L_{bol}/L_{Edd}, with the aim to: a) Confirm, by means of a more directestimate of L_{bol} based on X-rays rather than on LO III, as Bian et al. did,that the sources have mostly lambda~1, and check whether the super-Eddingtonsources did really exist or are an artifact due to the uncertainties in the LOIII-L_{bol} relationship. b) Determine the fraction of Compton-thick AGN atz~0.3-0.4, high Eddington ratios, and high luminosities, to be compared withmeasurements based on local, low luminosities samples to search for correlationbetween obscuration and both the Eddington ratio and the luminosity. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2007-07-11T06:24:11Z/2008-04-30T00:09:01Z |
| 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 | 2009-06-10T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "", "low luminosities samples", "obscured agn", "compton thick agn", "edd }", "xmm newton", "iii ]", "2006 subsample", "eddington ratio", "XMM-Newton", "local universe", "bol }/ l_", "XMM", "super eddington sources", "eddington ratios" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Alessandra Lamastra, 2009, 'Obscured AGN beyond the local Universe', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-mge3rfg |