A dataset provided by the European Space Agency

Name: Mrk 609 and Mrk 883: AGN without Broad-Line Regions?
Published: 2011-09-11T00:00:00Z

Proposal ID	065255
Title	Mrk 609 and Mrk 883: AGN without Broad-Line Regions?
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0652550201
DOI	https://doi.org/10.5270/esa-gcnn5s9
Principal Investigator, PI	Dr Margaret Trippe
Abstract	In the past few years there have been interesting reports of naked Seyfert2s, objects with the narrow optical emission line spectra characteristic ofSeyfert 2s but with the bright, essentially unabsorbed X-ray spectra typical ofSeyfert 1s. These AGN apparently lack broad-line regions (BLRs), incontradiction of the unified model. To date, the only naked Seyfert 2s confirmedby simultaneous optical and X-ray data show evidence for low accretion rates. Itis therefore important to determine if there are any examples of Seyferts withmoderate-to-high luminosities that lack BLRs. We propose simultaneous XMM andoptical observations of Mrk 883 and Mrk 609, two moderate-luminosity nakedSeyfert 2 candidates, to unambiguously determine if these AGN truly lack BLRs.
Publications	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 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 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 X-ray variability of Seyfert 1.8/1.9 galaxies \|Hernandez-Garcia L. Masegosa J. et al. \| A&A \| 602-65 \| 2017 \| 2017A&A...602A..65H \| http://ui.adsabs.harvard.edu/#abs/2017A&A...602A..65H 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 Testing warm Comptonization models for the origin of the soft X-ray excess in AGNs \|Petrucci P.-O. Ursini F. et al. \| A&A \| 611-59 \| 2018 \| 2018A&A...611A..59P \| http://ui.adsabs.harvard.edu/#abs/2018A&A...611A..59P 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 Estimating the size of X-ray lamppost coronae in active galactic nuclei \|Ursini F. Dovu010diak M. et al. \| A&A \| 644-132 \| 2020 \| 2020A&A...644A.132U \| http://ui.adsabs.harvard.edu/#abs/2020A&A...644A.132U 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 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 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 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	2010-08-20T09:14:14Z/2010-08-20T17:36:13Z
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	2011-09-11T00:00:00Z
Last Update	2025-01-27
Keywords	"agn truly", "agn apparently", "seyfert 2s", "xray data", "seyfert 1s", "naked seyfert 2s", "low accretion rates", "unified model", "XMM", "mrk 609", "mrk 883"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Margaret Trippe, 2011, 'Mrk 609 and Mrk 883: AGN without Broad-Line Regions?', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-gcnn5s9