We propose to observe with XMM-Newton, for a total of 310 ks, the Bian et al.(2006) subsample of type 2 AGN at zvirgul0.3-0.4 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 lambdavirgul1, 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 atzvirgul0.3-0.4, 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.
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.
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
