A dataset provided by the European Space Agency

Name 060156
Title Unabsorbed type 2 Seyfert galaxies: a challenge for Unified Models


DOI 10.5270/esa-n2sivcf
Author Dr Stefano Bianchi
Description The primary goal of this proposal is to find more objects unabsorbed in the X-rays and without broad optical lines, which represent a serious challenge to simple AGN Unification Models. A campaign of simultaneous X-ray and optical observations of unabsorbed Seyfert 2s has already proved successful in previous XMM-Newton AOs, leading to the discovery of the first "true" Seyfert 2 without broad line region (Bianchi et al., 2008). We therefore intend to pursue our strategy, proposing to complete our XMM-Newton observations of a sample of .bona-fide. Seyfert 2 galaxies with no X-ray absorption. The key to find genuine 'unabsorbed Seyfert 2s., excluding variability issues, is to perform simultaneous X-ray and optical spectroscopy.
Publication CAIXA: a catalogue of AGN in the XMM-Newton archive. III. Excess variance analysis . Ponti, G., Papadakis, I., et all. . A&A . 542-83 . 2012 . 2012A&A...542A..83P ,
An XMM-Newton Survey of the Soft X-Ray Background. II. An All-Sky Catalog of Diffuse O VII and O VIII Emission Intensities . Henley, David B., Shelton, Robin L., . ApJS . 202-14 . 2012 . 2012ApJS..202...14H ,
Simultaneous X-ray and optical observations of true type 2 Seyfert galaxies . Bianchi, Stefano, Panessa, Francesca, et all. . MNRAS . 426-3225 . 2012 . 2012MNRAS.426.3225B ,
Comparison of Millimeter-wave and X-Ray Emission in Seyfert Galaxies . Monje, R. R., Blain, A. W., . ApJS . 195-23 . 2011 . 2011ApJS..195...23M ,
Are X-Ray Emitting Coronae around Supermassive Black Holes Outflowing? . Liu, Teng, Wang, Jun-Xian, et all. . ApJ . 783-106 . 2014 . 2014ApJ...783..106L ,
Serendipitous UV source catalogues for 10 years of XMM and 5 years of Swift . Yershov, V. N., . Ap&SS . 354-97 . 2014 . 2014Ap&SS.354...97Y ,
X-ray reverberation around accreting black holes . Uttley, P., Cackett, E. M., et all. . A&ARv . 22-72 . 2014 . 2014A&ARv..22...72U ,
The Interaction of the Fermi Bubbles with the Milky Way.s Hot Gas Halo . Miller, Matthew J., Bregman, Joel N., . ApJ . 829-9 . 2016 . 2016ApJ...829....9M ,
The Million Optical - Radi...
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2009-06-03T22:45:08Z/2009-06-04T02:50:25Z
Version 17.56_20190403_1200
Mission Description The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's 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 Earth's 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 2010-06-23T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2010-06-23T00:00:00Z, 060156, 17.56_20190403_1200. https://doi.org/10.5270/esa-n2sivcf