A dataset provided by the European Space Agency

Name: Are all true type 2 Seyfert galaxies low accretors?
Published: 2016-09-18T22:00:00Z

Proposal ID	076023
Title	Are all true type 2 Seyfert galaxies low accretors?
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0760230301 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0760230401
DOI	https://doi.org/10.5270/esa-9nm3uge
Principal Investigator, PI	Dr Stefano Bianchi
Abstract	The primary goal of this proposal is to investigate the physical properties oftrue Seyfert 2s, objects which are unabsorbed in X-rays and without broadoptical lines. The key to find genuine unabsorbed Seyfert 2s, excludingvariability issues, is to perform simultaneous X-ray and optical spectroscopy. Acampaign of simultaneous X-ray and optical observations of unabsorbed Seyfert 2shas already proved successful in previous XMM AOs, leading to the discovery ofthe first three unambiguous objects of this new class, all with low accretionrates, in agreement with theoretical models. With the current proposal, we wantto explore a different accretion rate regime, by observing three true type 2candidates with higher accretion rates.
Publications	Connecting optical and X-ray tracers of galaxy cluster relaxation \|Roberts Ian D. Parker Laura C. \| MNRAS \| 475-4704 \| 2018 \| 2018MNRAS.475.4704R \| http://ui.adsabs.harvard.edu/#abs/2018MNRAS.475.4704R Revived fossil plasma sources in galaxy clusters \|Mandal S. Intema H. T. et al. \| A&A \| 634-4 \| 2020 \| 2020A&A...634A...4M \| http://ui.adsabs.harvard.edu/#abs/2020A&A...634A...4M On the Reliability of Photometric and Spectroscopic Tracers of Halo Relaxation \|Zhoolideh Haghighi Mohammad H. Raouf Mojtaba et al. \| ApJ \| 904-36 \| 2020 \| 2020ApJ...904...36Z \| http://ui.adsabs.harvard.edu/#abs/2020ApJ...904...36Z 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 A Multiwavelength Study of Active Galactic Nuclei in Post-merger Remnants \|Li Wenhao Nair Preethi et al. \| ApJ \| 944-168 \| 2023 \| 2023ApJ...944..168L \| http://ui.adsabs.harvard.edu/#abs/2023ApJ...944..168L 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
Instrument	EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage	2015-08-07T22:44:11Z/2015-08-25T06:09:06Z
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	2016-09-18T22:00:00Z
Last Update	2025-01-27
Keywords	"xmm aos", "seyfert 2s", "unabsorbed seyfert 2s", "proved successful", "optical spectroscopy", "low accretion rates", "unambiguous objects", "accretion rates", "accretion rate regime", "physical properties", "XMM", "broad optical lines", "excluding variability issues"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Stefano Bianchi, 2016, 'Are all true type 2 Seyfert galaxies low accretors?', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-9nm3uge