A dataset provided by the European Space Agency

Name: THE X-RAY/OPTICAL AGN TYPE MISMATCH: REALITY OR VARIABILITY
Published: 2006-06-15T00:00:00Z

Proposal ID	020109
Title	THE X-RAY/OPTICAL AGN TYPE MISMATCH: REALITY OR VARIABILITY
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0201090201 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0201090401
DOI	https://doi.org/10.5270/esa-fctyz6c
Principal Investigator, PI	Prof XAVIER BARCONS
Abstract	The mounting evidence for non-matching AGN spectral type and X-ray absorption isalmost invariably based on non-simultaneous optical and X-ray observations. Bothproperties are known to be variable in some AGN. The aim of the present proposalis to solve the dichotomy on whether both optical and X-ray obscuration areclosely related (as predicted by the unified AGN picture) but variable, or elsethese properties are really mismatched in some objects. We propose XMM-Newtonobservations, simultaneous to optical spectroscopy, of a representativeselection of AGNs whose optical spectral type is known to be variable.
Publications	Simultaneous X-ray and optical spectroscopy of the Seyfert galaxy Mrk 993 \|Corral A. Barcons X. et al. \| A&A \| 431-97 \| 2005 \| 2005A&A...431...97C \| http://ui.adsabs.harvard.edu/#abs/2005A&A...431...97C A Multi-wavelength Study of the Nature of Type 1.8/1.9 Seyfert Galaxies \|Trippe M. L. Crenshaw D. M. et al. \| ApJ \| 725-1749 \| 2010 \| 2010ApJ...725.1749T \| http://ui.adsabs.harvard.edu/#abs/2010ApJ...725.1749T The XMM-Newton serendipitous survey. V. The Second XMM-Newton serendipitous source catalogue \|Watson M. G. Schroder A. C. et al. \| A&A \| 493-339 \| 2009 \| 2009A&A...493..339W \| http://ui.adsabs.harvard.edu/#abs/2009A&A...493..339W On the origin of soft X-rays in obscured AGN: answers from high-resolution spectroscopy with XMM-Newton \|Guainazzi Matteo Bianchi Stefano \| MNRAS \| 374-1290 \| 2007 \| 2007MNRAS.374.1290G \| http://ui.adsabs.harvard.edu/#abs/2007MNRAS.374.1290G An Extremely Luminous Panchromatic Outburst from the Nucleus of a Distant Galaxy \|Levan A. J. Tanvir N. R. et al. \| Sci \| 333-199 \| 2011 \| 2011Sci...333..199L \| http://ui.adsabs.harvard.edu/#abs/2011Sci...333..199L Statistical evaluation of the flux cross-calibration of the XMM-Newton EPIC cameras \|Mateos S. Saxton R. D. et al. \| A&A \| 496-879 \| 2009 \| 2009A&A...496..879M \| http://ui.adsabs.harvard.edu/#abs/2009A&A...496..879M A combined optical and X-ray study of unobscured type 1 active galactic nuclei - I. Optical spectra and spectral energy distribution modelling \|Jin Chichuan Ward Martin et al. \| MNRAS \| 420-1825 \| 2012 \| 2012MNRAS.420.1825J \| http://ui.adsabs.harvard.edu/#abs/2012MNRAS.420.1825J The XMM Cluster Survey: optical analysis methodology and the first data release \|Mehrtens Nicola Romer A. Kathy et al. \| MNRAS \| 423-1024 \| 2012 \| 2012MNRAS.423.1024M \| http://ui.adsabs.harvard.edu/#abs/2012MNRAS.423.1024M X-ray obscuration and obscured AGN in the local universe \|Guainazzi M. Matt G. \| A&A \| 444-119 \| 2005 \| 2005A&A...444..119G \| http://ui.adsabs.harvard.edu/#abs/2005A&A...444..119G Statistics of relativistically broadened Fe Kalpha lines in AGN \|Guainazzi M. Bianchi S. \| AN \| 327-1032 \| 2006 \| 2006AN....327.1032G \| http://ui.adsabs.harvard.edu/#abs/2006AN....327.1032G An All-Sky Atlas of Radio/X-ray Associations \|Flesch E. \| PASA \| 27-283 \| 2010 \| 2010PASA...27..283F \| http://ui.adsabs.harvard.edu/#abs/2010PASA...27..283F Fe Kalpha line profile in AGNs: average shape and redshift dependence \|Mao Wei-Ming Hu Chen et al. \| RAA \| 10-905 \| 2010 \| 2010RAA....10..905M \| http://ui.adsabs.harvard.edu/#abs/2010RAA....10..905M CAIXA: a catalogue of AGN in the XMM-Newton archive. I. Spectral analysis \|Bianchi S. Guainazzi M. et al. \| A&A \| 495-421 \| 2009 \| 2009A&A...495..421B \| http://ui.adsabs.harvard.edu/#abs/2009A&A...495..421B The XMM Cluster Survey: X-ray analysis methodology \|Lloyd-Davies E. J. Romer A. Kathy et al. \| MNRAS \| 418-14 \| 2011 \| 2011MNRAS.418...14L \| http://ui.adsabs.harvard.edu/#abs/2011MNRAS.418...14L Exospheric solar wind charge exchange as seen by XMM-Newton \|Carter J. A. Semba S. \| AN \| 333-313 \| 2012 \| 2012AN....333..313C \| http://ui.adsabs.harvard.edu/#abs/2012AN....333..313C The cosmological analysis of X-ray cluster surveys - II. Application of the CR-HR method to the XMM archive \|Clerc N. Sadibekova T. et al. \| MNRAS \| 423-3561 \| 2012 \| 2012MNRAS.423.3561C \| http://ui.adsabs.harvard.edu/#abs/2012MNRAS.423.3561C Classification of X-Ray Sources in the XMM-Newton Serendipitous Source Catalog \|Lin Dacheng Webb Natalie A. \| ApJ \| 756-27 \| 2012 \| 2012ApJ...756...27L \| http://ui.adsabs.harvard.edu/#abs/2012ApJ...756...27L A combined optical and X-ray study of unobscured type 1 active galactic nuclei - III. Broad-band SED properties \|Jin Chichuan Ward Martin \| MNRAS \| 425-907 \| 2012 \| 2012MNRAS.425..907J \| http://ui.adsabs.harvard.edu/#abs/2012MNRAS.425..907J The XMM-Newton serendipitous ultraviolet source survey catalogue \|Page M. J. Brindle C. et al. \| MNRAS \| 426-903 \| 2012 \| 2012MNRAS.426..903P \| http://ui.adsabs.harvard.edu/#abs/2012MNRAS.426..903P On the Iwasawa-Taniguchi effect of radio-quiet AGN \|Bianchi S. Guainazzi M. et al. \| A&A \| 467-19 \| 2007 \| 2007A&A...467L..19B \| http://ui.adsabs.harvard.edu/#abs/2007A&A...467L..19B Properties of the integrated spectrum of serendipitous 2XMM catalog sources \|Chaudhary P. Brusa M. et al. \| A&A \| 518-58 \| 2010 \| 2010A&A...518A..58C \| http://ui.adsabs.harvard.edu/#abs/2010A&A...518A..58C Rest-frame stacking of 2XMM catalog sources. Properties of the Fe Kalpha line \|Chaudhary P. Brusa M. et al. \| A&A \| 537-6 \| 2012 \| 2012A&A...537A...6C \| http://ui.adsabs.harvard.edu/#abs/2012A&A...537A...6C Using the Bright Ultrahard XMM-Newton survey to define an IR selection of luminous AGN based on WISE colours \|Mateos S. Alonso-Herrero A. et al. \| MNRAS \| 426-3271 \| 2012 \| 2012MNRAS.426.3271M \| http://ui.adsabs.harvard.edu/#abs/2012MNRAS.426.3271M Cross-correlation of the 2XMMi catalogue with Data Release 7 of the Sloan Digital Sky Survey \|Pineau F.-X. Motch C. et al. \| A&A \| 527-126 \| 2011 \| 2011A&A...527A.126P \| http://ui.adsabs.harvard.edu/#abs/2011A&A...527A.126P A systematic cross-search for radio/infrared counterparts of XMM- Newton sources \|Combi J. A. Albacete Colombo J. F. et al. \| Ap&SS \| 331-53 \| 2011 \| 2011Ap&SS.331...53C \| http://ui.adsabs.harvard.edu/#abs/2011Ap&SS.331...53C Exploring X-ray and radio emission of type 1 AGN up to z ~ 2.3 \|Ballo L. Heras F. J. H. et al. \| A&A \| 545-66 \| 2012 \| 2012A&A...545A..66B \| http://ui.adsabs.harvard.edu/#abs/2012A&A...545A..66B High spectral resolution X-ray observations of AGN \|Kaastra J. S. \| AN \| 329-162 \| 2008 \| 2008AN....329..162K \| http://ui.adsabs.harvard.edu/#abs/2008AN....329..162K Uncovering obscured luminous AGN with WISE \|Mateos S. Alonso-Herrero A. et al. \| MNRAS \| 434-941 \| 2013 \| 2013MNRAS.434..941M \| http://ui.adsabs.harvard.edu/#abs/2013MNRAS.434..941M Automatic Classification of Time-variable X-Ray Sources \|Lo Kitty K. Farrell Sean et al. \| ApJ \| 786-20 \| 2014 \| 2014ApJ...786...20L \| http://ui.adsabs.harvard.edu/#abs/2014ApJ...786...20L The diversity of quasars unified by accretion and orientation \|Shen Yue Ho Luis C. \| Natur \| 513-210 \| 2014 \| 2014Natur.513..210S \| http://ui.adsabs.harvard.edu/#abs/2014Natur.513..210S 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 Revisiting the relationship between 6 mum and 2-10 keV continuum luminosities of AGN \|Mateos S. Carrera F. J. et al. \| MNRAS \| 449-1422 \| 2015 \| 2015MNRAS.449.1422M \| http://ui.adsabs.harvard.edu/#abs/2015MNRAS.449.1422M CAIXA: a catalogue of AGN in the XMM-Newton archive. II. Multiwavelength correlations \|Bianchi S. Bonilla N. F. et al. \| A&A \| 501-915 \| 2009 \| 2009A&A...501..915B \| http://ui.adsabs.harvard.edu/#abs/2009A&A...501..915B Sunyaev-Zeldovich effect or not? Detecting the main foreground effect of most galaxy clusters \|Xiao Weike Chen Chen et al. \| MNRAS \| 432-41 \| 2013 \| 2013MNRAS.432L..41X \| http://ui.adsabs.harvard.edu/#abs/2013MNRAS.432L..41X A New Sample of Obscured AGNs Selected from the XMM-Newton and AKARI Surveys \|Terashima Yuichi Hirata Yoshitaka et al. \| ApJ \| 814-11 \| 2015 \| 2015ApJ...814...11T \| http://ui.adsabs.harvard.edu/#abs/2015ApJ...814...11T Statistical properties of dwarf novae-type cataclysmic variables: the outburst catalogue \|Coppejans Deanne L. Kording Elmar G. et al. \| MNRAS \| 456-4441 \| 2016 \| 2016MNRAS.456.4441C \| http://ui.adsabs.harvard.edu/#abs/2016MNRAS.456.4441C Ensemble X-ray variability of active galactic nuclei. II. Excess variance and updated structure function \|Vagnetti F. Middei R. et al. \| A&A \| 593-55 \| 2016 \| 2016A&A...593A..55V \| http://ui.adsabs.harvard.edu/#abs/2016A&A...593A..55V The 3XMM/SDSS Stripe 82 Galaxy Cluster Survey. I. Cluster catalogue and discovery of two merging cluster candidates \|Takey A. Durret F. et al. \| A&A \| 594-32 \| 2016 \| 2016A&A...594A..32T \| http://ui.adsabs.harvard.edu/#abs/2016A&A...594A..32T SPIDERS: the spectroscopic follow-up of X-ray selected clusters of galaxies in SDSS-IV \|Clerc N. Merloni A. et al. \| MNRAS \| 463-4490 \| 2016 \| 2016MNRAS.463.4490C \| http://ui.adsabs.harvard.edu/#abs/2016MNRAS.463.4490C 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 Dependence of the broad Fe Kalpha line on the physical parameters of AGN \|Liu Zhu Yuan Weimin et al. \| MNRAS \| 463-684 \| 2016 \| 2016MNRAS.463..684L \| http://ui.adsabs.harvard.edu/#abs/2016MNRAS.463..684L Determining the torus covering factors for a sample of type 1 AGN in the local Universe \|Ezhikode Savithri H. Gandhi Poshak et al. \| MNRAS \| 472-3492 \| 2017 \| 2017MNRAS.472.3492E \| http://ui.adsabs.harvard.edu/#abs/2017MNRAS.472.3492E Anisotropy of the galaxy cluster X-ray luminosity-temperature relation \|Migkas Konstantinos Reiprich Thomas H. \| A&A \| 611-50 \| 2018 \| 2018A&A...611A..50M \| http://ui.adsabs.harvard.edu/#abs/2018A&A...611A..50M Chandra Survey of Nearby Galaxies: Testing the Accretion Model for Low-luminosity AGNs \|She Rui Ho Luis C. et al. \| ApJ \| 859-152 \| 2018 \| 2018ApJ...859..152S \| http://ui.adsabs.harvard.edu/#abs/2018ApJ...859..152S The XMM Cluster Survey: Present status and latest results \|Viana P. T. P. Mehrtens N. et al. \| AN \| 334-462 \| 2013 \| 2013AN....334..462V \| http://ui.adsabs.harvard.edu/#abs/2013AN....334..462V An X-ray view of central engines of low-luminosity quasars (LLQSO) in the local Universe \|Laha Sibasish Ghosh Ritesh et al. \| MNRAS \| 480-1522 \| 2018 \| 2018MNRAS.480.1522L \| http://ui.adsabs.harvard.edu/#abs/2018MNRAS.480.1522L Evidence for radiation pressure compression in the X-ray narrow-line region of Seyfert galaxies \|Bianchi Stefano Guainazzi Matteo et al. \| MNRAS \| 485-416 \| 2019 \| 2019MNRAS.485..416B \| http://ui.adsabs.harvard.edu/#abs/2019MNRAS.485..416B A Wide and Deep Exploration of Radio Galaxies with Subaru HSC (WERGS). II. Physical Properties Derived from the SED Fitting with Optical Infrared and Radio Data \|Toba Yoshiki Yamashita Takuji et al. \| ApJS \| 243-15 \| 2019 \| 2019ApJS..243...15T \| http://ui.adsabs.harvard.edu/#abs/2019ApJS..243...15T Testing emergent gravity on galaxy cluster scales \|Tamosiunas Andrius Bacon David et al. \| JCAP \| 5-53 \| 2019 \| 2019JCAP...05..053T \| http://ui.adsabs.harvard.edu/#abs/2019JCAP...05..053T Chandra Follow-up of the SDSS DR8 Redmapper Catalog Using the MATCha Pipeline \|Hollowood Devon L. Jeltema Tesla et al. \| ApJS \| 244-22 \| 2019 \| 2019ApJS..244...22H \| http://ui.adsabs.harvard.edu/#abs/2019ApJS..244...22H Stellar mass as a galaxy cluster mass proxy: application to the Dark Energy Survey redMaPPer clusters \|Palmese A. Annis J. et al. \| MNRAS \| 493-4591 \| 2020 \| 2020MNRAS.493.4591P \| http://ui.adsabs.harvard.edu/#abs/2020MNRAS.493.4591P X-ray properties of the X-CLASS-redMaPPer galaxy cluster sample: the luminosity-temperature relation \|Molham Mona Clerc Nicolas et al. \| MNRAS \| 494-161 \| 2020 \| 2020MNRAS.494..161M \| http://ui.adsabs.harvard.edu/#abs/2020MNRAS.494..161M Multiwavelength classification of X-ray selected galaxy cluster candidates using convolutional neural networks \|Kosiba Matej Lieu Maggie et al. \| MNRAS \| 496-4141 \| 2020 \| 2020MNRAS.496.4141K \| http://ui.adsabs.harvard.edu/#abs/2020MNRAS.496.4141K SPIDERS: overview of the X-ray galaxy cluster follow-up and the final spectroscopic data release \|Clerc N. Kirkpatrick C. C. et al. \| MNRAS \| 497-3976 \| 2020 \| 2020MNRAS.497.3976C \| http://ui.adsabs.harvard.edu/#abs/2020MNRAS.497.3976C 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 Long-term and multiwavelength evolution of a changing-look AGN Mrk 1018 \|Lyu Bing Yan Zhen et al. \| MNRAS \| 506-4188 \| 2021 \| 2021MNRAS.506.4188L \| http://ui.adsabs.harvard.edu/#abs/2021MNRAS.506.4188L The Origin of the Unfocused XMM-Newton Background Its Variability and Lessons Learned for ATHENA \|Gastaldello Fabio Marelli Martino et al. \| ApJ \| 928-168 \| 2022 \| 2022ApJ...928..168G \| http://ui.adsabs.harvard.edu/#abs/2022ApJ...928..168G Coevolution of Broad Emission Lines and X-Ray Spectrum in Changing-look AGNs \|Liu Hao Wu Qingwen \| ApJ \| 930-46 \| 2022 \| 2022ApJ...930...46L \| http://ui.adsabs.harvard.edu/#abs/2022ApJ...930...46L Dynamical state of galaxy clusters evaluated from X-ray images \|Yuan Z. S. Han J. L. \| MNRAS \| 513-3013 \| 2022 \| 2022MNRAS.513.3013Y \| http://ui.adsabs.harvard.edu/#abs/2022MNRAS.513.3013Y Hard X-Ray to Radio Multiwavelength SED Analysis of Local U/LIRGs in the GOALS Sample with a Self-consistent AGN Model including a Polar-dust Component \|Yamada Satoshi Ueda Yoshihiro et al. \| ApJS \| 265-37 \| 2023 \| 2023ApJS..265...37Y \| http://ui.adsabs.harvard.edu/#abs/2023ApJS..265...37Y Dependency of optical/UV parameters on X-ray spectral index in AGNs \|Nour D. Sriram K. \| JHEAp \| 37-34 \| 2023 \| 2023JHEAp..37...34N \| http://ui.adsabs.harvard.edu/#abs/2023JHEAp..37...34N BASS-XL: X-ray variability properties of unobscured active galactic nuclei \|Tortosa Alessia Ricci Claudio et al. \| MNRAS \| 526-1687 \| 2023 \| 2023MNRAS.526.1687T \| http://ui.adsabs.harvard.edu/#abs/2023MNRAS.526.1687T Interpreting the long-term variability of the changing-look AGN Mrk 1018 \|Veronese S. Vignali C. et al. \| A&A \| 683-A131 \| 2024 \| 2024A&A...683A.131V \| http://ui.adsabs.harvard.edu/#abs/2024A&A...683A.131V The XMM-Newton Line Emission Analysis Program (X-LEAP). I. Emission-line Survey of O VII O VIII and Fe L-shell Transitions \|Pan Zeyang Qu Zhijie et al. \| ApJS \| 271-62 \| 2024 \| 2024ApJS..271...62P \| http://ui.adsabs.harvard.edu/#abs/2024ApJS..271...62P From Active Stars to Black Holes: A Discovery Tool for Galactic X-Ray Sources \|Rodriguez Antonio C. \| PASP \| 136-054201 \| 2024 \| 2024PASP..136e4201R \| http://ui.adsabs.harvard.edu/#abs/2024PASP..136e4201R Robust constraints on feebly interacting particles using XMM-Newton \|Luque Pedro De la Torre Balaji Shyam \| PhRvD \| 109-L101305 \| 2024 \| 2024PhRvD.109j1305L \| http://ui.adsabs.harvard.edu/#abs/2024PhRvD.109j1305L Multimessenger search for electrophilic feebly interacting particles from supernovae \|Luque Pedro De la Torre Balaji Shyam \| PhRvD \| 109-103028 \| 2024 \| 2024PhRvD.109j3028L \| http://ui.adsabs.harvard.edu/#abs/2024PhRvD.109j3028L Importance of Cosmic-Ray Propagation on Sub-GeV Dark Matter Constraints \|De la Torre Luque Pedro Balaji Shyam \| ApJ \| 968-46 \| 2024 \| 2024ApJ...968...46D \| http://ui.adsabs.harvard.edu/#abs/2024ApJ...968...46D Probing the inner Galactic halo with blue horizontal-branch stars. Gaia DR3-based catalogue with atmospheric and stellar parameters \|Culpan R. Dorsch M. et al. \| A&A \| 685-A134 \| 2024 \| 2024A&A...685A.134C \| http://ui.adsabs.harvard.edu/#abs/2024A&A...685A.134C Extinction and AGN over host galaxy contrast effects on the optical spectroscopic classification of AGN \|Barquu00edn-Gonzu00e1lez L. Mateos S. et al. \| A&A \| 687-A159 \| 2024 \| 2024A&A...687A.159B \| http://ui.adsabs.harvard.edu/#abs/2024A&A...687A.159B Search for Young Stellar Objects within 4XMM-DR13 Using CatBoost and SPE \|Ma Xiangyao Zhang Yanxia et al. \| AJ \| 168-210 \| 2024 \| 2024AJ....168..210M \| http://ui.adsabs.harvard.edu/#abs/2024AJ....168..210M New 511 keV Line Data Provide Strongest sub-GeV Dark Matter Constraints \|De la Torre Luque Pedro Balaji Shyam \| ApJ \| 973-L6 \| 2024 \| 2024ApJ...973L...6D \| http://ui.adsabs.harvard.edu/#abs/2024ApJ...973L...6D
Instrument	EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage	2004-01-23T16:53:53Z/2005-01-15T21:35:45Z
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	2006-06-15T00:00:00Z
Last Update	2025-08-04
Keywords	"XMM", "XMM-Newton", "xray obscuration", "mounting evidence", "closely related", "xmm newton", "optical spectroscopy", "unified agn picture", "xray absorption", "optical spectral type"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Prof XAVIER BARCONS, 2006, 'THE X-RAY/OPTICAL AGN TYPE MISMATCH: REALITY OR VARIABILITY', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-fctyz6c