Proposal ID | 055120 |
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=0551200101 |
DOI | https://doi.org/10.5270/esa-5n84iea |
Principal Investigator, PI | Dr Alessandra Lamastra |
Abstract | We propose to observe with XMM-Newton the Bian et al. (2006) subsample of type 2AGN at z=0.3-0.4 for which they could estimate lambda=L_bol/L_Edd, based on theLO III. The sources have all high Eddington ratios, and high luminosities. Themain aim is to determine the fraction of Compton-thick AGN at z=0.3-0.4, highlambda, high L, to be compared with measurements based on local, lowluminosities samples to search for correlation between obscuration and both theEddington ratio and the luminosity. This proposal is a continuation of apartially approved AO6 proposal. Three sources were approved in priority B, andtwo of them have been already observed. Very surprisingly, neither of them weredetected, indicating they are extremely X-ray weak. |
Publications |
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Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
Temporal Coverage | 2008-05-09T09:27:03Z/2008-11-07T09:36:16Z |
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 | 2009-12-02T00:00:00Z |
Last Update | 2025-01-27 |
Keywords | "low luminosities samples", "obscured agn", "compton thick agn", "xmm newton", "partially approved ao6", "2006 subsample", "eddington ratio", "XMM-Newton", "local universe", "iii ].", "xray weak", "XMM", "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-5n84iea |