A dataset provided by the European Space Agency

Name: Unabsorbed type 2 Seyfert galaxies: a challenge for Unified Models
Published: 2010-06-23T00:00:00Z

Proposal ID	060156
Title	Unabsorbed type 2 Seyfert galaxies: a challenge for Unified Models
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0601560201
DOI	https://doi.org/10.5270/esa-n2sivcf
Principal Investigator, PI	Dr Stefano Bianchi
Abstract	The primary goal of this proposal is to find more objects unabsorbed in theX-rays and without broad optical lines, which represent a serious challenge tosimple AGN Unification Models. A campaign of simultaneous X-ray and opticalobservations of unabsorbed Seyfert 2s has already proved successful in previousXMM-Newton AOs, leading to the discovery of the first true Seyfert 2 withoutbroad line region (Bianchi et al., 2008). We therefore intend to pursue ourstrategy, proposing to complete our XMM-Newton observations of a sample ofbona-fide Seyfert 2 galaxies with no X-ray absorption. The key to find genuineunabsorbed Seyfert 2s, excluding variability issues, is to performsimultaneous X-ray and optical spectroscopy.
Publications	CAIXA: a catalogue of AGN in the XMM-Newton archive. III. Excess variance analysis \|Ponti G. Papadakis I. et al. \| A&A \| 542-83 \| 2012 \| 2012A&A...542A..83P \| http://ui.adsabs.harvard.edu/#abs/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 \| http://ui.adsabs.harvard.edu/#abs/2012ApJS..202...14H Simultaneous X-ray and optical observations of true type 2 Seyfert galaxies \|Bianchi Stefano Panessa Francesca et al. \| MNRAS \| 426-3225 \| 2012 \| 2012MNRAS.426.3225B \| http://ui.adsabs.harvard.edu/#abs/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 \| http://ui.adsabs.harvard.edu/#abs/2011ApJS..195...23M Are X-Ray Emitting Coronae around Supermassive Black Holes Outflowing? \|Liu Teng Wang Jun-Xian et al. \| ApJ \| 783-106 \| 2014 \| 2014ApJ...783..106L \| http://ui.adsabs.harvard.edu/#abs/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 \| http://ui.adsabs.harvard.edu/#abs/2014Ap&SS.354...97Y X-ray reverberation around accreting black holes \|Uttley P. Cackett E. M. et al. \| A&ARv \| 22-72 \| 2014 \| 2014A&ARv..22...72U \| http://ui.adsabs.harvard.edu/#abs/2014A&ARv..22...72U The Interaction of the Fermi Bubbles with the Milky Ways Hot Gas Halo \|Miller Matthew J. Bregman Joel N. \| ApJ \| 829-9 \| 2016 \| 2016ApJ...829....9M \| http://ui.adsabs.harvard.edu/#abs/2016ApJ...829....9M The Million Optical - Radio/X-ray Associations (MORX) Catalogue \|Flesch Eric W. \| PASA \| 33-52 \| 2016 \| 2016PASA...33...52F \| http://ui.adsabs.harvard.edu/#abs/2016PASA...33...52F AGN spectral states from simultaneous UV and X-ray observations by XMM-Newton \|Svoboda J. Guainazzi M. \| A&A \| 603-127 \| 2017 \| 2017A&A...603A.127S \| http://ui.adsabs.harvard.edu/#abs/2017A&A...603A.127S An X-Ray- and SZ-bright Diffuse Source toward M31: A Local Hot Bridge \|Qu Zhijie Huang Rui et al. \| ApJ \| 907-14 \| 2021 \| 2021ApJ...907...14Q \| http://ui.adsabs.harvard.edu/#abs/2021ApJ...907...14Q Classification of 4XMM-DR9 sources by machine learning \|Zhang Yanxia Zhao Yongheng \| MNRAS \| 503-5263 \| 2021 \| 2021MNRAS.503.5263Z \| http://ui.adsabs.harvard.edu/#abs/2021MNRAS.503.5263Z The Solar Cycle Temporal Variation of the Solar Wind Charge Exchange X-Ray Lines \|Qu Zhijie Koutroumpa Dimitra et al. \| ApJ \| 930-21 \| 2022 \| 2022ApJ...930...21Q \| http://ui.adsabs.harvard.edu/#abs/2022ApJ...930...21Q
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 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	2010-06-23T00:00:00Z
Last Update	2025-01-27
Keywords	"unabsorbed seyfert 2s", "xmm newton", "proved successful", "optical spectroscopy", "XMM-Newton", "unified models", "xray absorption", "seyfert galaxy", "bona fide", "XMM", "xmm newton aos", "broad optical lines", "unabsorbed type", "objects unabsorbed"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Stefano Bianchi, 2010, 'Unabsorbed type 2 Seyfert galaxies: a challenge for Unified Models', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-n2sivcf