A dataset provided by the European Space Agency

Name: Are all true type 2 Seyfert galaxies low accretorsquestionMark
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
Keywords	"unabsorbed seyfert 2s", "accretion rates", "XMM", "seyfert 2s", "low accretion rates", "excluding variability issues", "unambiguous objects", "physical properties", "xmm aos", "accretion rate regime", "proved successful", "broad optical lines", "optical spectroscopy"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Stefano Bianchi, 2016, 'Are all true type 2 Seyfert galaxies low accretorsquestionMark', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-9nm3uge