A dataset provided by the European Space Agency

Name: Changing Type Seyferts galaxies and the AGN Unified Model
Published: 2009-09-02T00:00:00Z

Proposal ID	055492
Title	Changing Type Seyferts galaxies and the AGN Unified Model
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0554920301
DOI	https://doi.org/10.5270/esa-lgcg3rn
Principal Investigator, PI	Ms Amalia Corral
Abstract	The aim of the present proposal to test whether the apparent mismatch betweenX-ray absorption and optical spectral type (attributable to reddening) in someAGN is real or due to changes in he source properties, as predicted by the AGNUnified Scheme. We propose here to complete the quasi-simultaneous -- X-ray/Optical-- observation program of a well-defined sample of Changing TypeSeyferts we started in AO3 and continued to AO6. Besides the simultaneousobservations, we will perform delayed optical spectroscopy to account forpossible time lags between changes in the X-ray source and optical.
Publications	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 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 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 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 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 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 Are Boltzmann plots of hydrogen Balmer lines a tool for identifying a subclass of S1 AGN? \|Rafanelli P. Ciroi S. et al. \| AdSpR \| 54-1362 \| 2014 \| 2014AdSpR..54.1362R \| http://ui.adsabs.harvard.edu/#abs/2014AdSpR..54.1362R The optical emission lines of type 1 X-ray bright Active Galactic Nuclei \|La Mura G. Berton M. et al. \| AdSpR \| 54-1382 \| 2014 \| 2014AdSpR..54.1382L \| http://ui.adsabs.harvard.edu/#abs/2014AdSpR..54.1382L 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 XMM-Newton publication statistics \|Ness J.-U. Parmar A. N. et al. \| AN \| 335-210 \| 2014 \| 2014AN....335..210N \| http://ui.adsabs.harvard.edu/#abs/2014AN....335..210N The Tight Relation between X-Ray and Ultraviolet Luminosity of Quasars \|Lusso E. Risaliti G. \| ApJ \| 819-154 \| 2016 \| 2016ApJ...819..154L \| http://ui.adsabs.harvard.edu/#abs/2016ApJ...819..154L 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 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 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 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 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 Explaining changing-look AGN with state transition triggered by rapid mass accretion rate drop \|Noda Hirofumi Done Chris \| MNRAS \| 480-3898 \| 2018 \| 2018MNRAS.480.3898N \| http://ui.adsabs.harvard.edu/#abs/2018MNRAS.480.3898N 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 A Luminous X-Ray Transient in SDSS J143359.16+400636.0: A Likely Tidal Disruption Event \|Brightman Murray Ward Charlotte et al. \| ApJ \| 909-102 \| 2021 \| 2021ApJ...909..102B \| http://ui.adsabs.harvard.edu/#abs/2021ApJ...909..102B 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 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 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 X-ray emission from a rapidly accreting narrow-line Seyfert 1 galaxy at z = 6.56 \|Wolf J. Nandra K. et al. \| A&A \| 669-127 \| 2023 \| 2023A&A...669A.127W \| http://ui.adsabs.harvard.edu/#abs/2023A&A...669A.127W 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 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
Instrument	EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage	2008-08-07T02:28:50Z/2008-08-07T07:22:31Z
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	2009-09-02T00:00:00Z
Last Update	2025-01-27
Keywords	"agn unified model", "apparent mismatch", "changing type seyferts", "xray source", "xray absorption", "time lags", "x ray", "agn unified scheme", "defined sample", "source properties"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Ms Amalia Corral, 2009, 'Changing Type Seyferts galaxies and the AGN Unified Model', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-lgcg3rn