A dataset provided by the European Space Agency

Name: A link between X-ray weakness and Eddington ratio in BALQSOsquestionMark
Published: 2018-08-01T22:00:00Z

Proposal ID	080179
Title	A link between X-ray weakness and Eddington ratio in BALQSOs?
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0801790101 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0801790301 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0801790401 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0801790601
DOI	https://doi.org/10.5270/esa-3c6eajk
Principal Investigator, PI	Dr Fabio Vito
Abstract	We found hints of an anti-correlation between observed X-ray weakness andEddington ratio in a small sample of BALQSOs observed in the X-rays with high-quality black hole mass estimates. We argue that this could be due tointervening obscuration (perhaps due to the presence of a failed wind at thebase of the accretion disk, as requested by some model of wind launching inBALQSOs) or to intrinsic (i.e. not due to absorption) X-ray weakness, sometimesassociated with rapidly-accreting SMBH. In order to assess if thatanti-correlation exists and to test the different possible physicalexplanations, we propose to observe with XMM-Newton a sample of 8 BALQSOs atz=1.7-1.9, for a total of 147 ks.
Publications	No evidence for an Eddington-ratio dependence of X-ray weakness in BALQSOs \|Vito, F., Brandt, W. N., et al. \| MNRAS \| 479-5335 \| 2018 \| 2018MNRAS.479.5335V \| http://ui.adsabs.harvard.edu/#abs/2018MNRAS.479.5335V 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\\u2011HESS: A large sample of highly accreting serendipitous AGN under the XMM\\u2011Newton microscope \|Laurenti, M., Tombesi, F., et al. \| AN \| 344-20230053 \| 2023 \| 2023AN....34430053L \| http://ui.adsabs.harvard.edu/#abs/2023AN....34430053L 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	2017-05-01T22:57:23Z/2017-07-13T17:30:51Z
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	2018-08-01T22:00:00Z
Keywords	"eddington ratio", "xray weakness", "balqsos ?.", "XMM", "absorption xray weakness", "anti correlation", "intervening obscuration", "wind launching", "accreting smbh", "anti correlation exists", "failed wind", "physical explanations", "XMM-Newton", "accretion disk", "quality blackhole mass", "xmm newton"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Fabio Vito, 2018, 'A link between X-ray weakness and Eddington ratio in BALQSOsquestionMark', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-3c6eajk