A dataset provided by the European Space Agency

Name: Exploring the unusual X-ray dipping in the luminous Seyfert galaxy Fairall 9
Published: 2015-01-20T23:00:00Z
License: https://creativecommons.org/licenses/by-nc/3.0/igo

Proposal ID	072111
Title	Exploring the unusual X-ray dipping in the luminous Seyfert galaxy Fairall 9
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0721110101 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0721110201
DOI	https://doi.org/10.5270/esa-3gf1wvf
Principal Investigator, PI	Prof Christopher Reynolds
Abstract	RXTE monitoring of the AGN Fairall 9 (F9) reveals extremely unusual X-rayvariability. Instead of the flare-like lightcurve shown by most AGN, F9 showsslow modulations punctuated by short (<15 day), deep dips. If due to absorption,the obscurer must be Compton-thick, partially cover the X-ray source, and existin a pristine environment. If due to accretion instabilities, it implies violentdisruption of the inner disk. Here, we propose triggered XMM-Newton observationsof F9 of the dip-state and the post- dip state, triggering from a Swiftmonitoring campaign proposed for Swift/ Cycle-9. XMM-Newton spectroscopy ofthese unusual dips is guaranteed to yield new insights into the circumnuclearenvironment and/or accretion physics.
Publications	The Rhythm of Fairall 9. I. Observing the Spectral Variability with XMM-Newton and NuSTAR \|Lohfink A. M. Reynolds C. S. et al. \| ApJ \| 821-11 \| 2016 \| 2016ApJ...821...11L \| http://ui.adsabs.harvard.edu/#abs/2016ApJ...821...11L Fe-K Line Time Variability and Ni Abundance of Distant Reflectors in Seyfert Galaxies \|Fukazawa Yasushi Furui Shunya et al. \| ApJ \| 821-15 \| 2016 \| 2016ApJ...821...15F \| http://ui.adsabs.harvard.edu/#abs/2016ApJ...821...15F Super- and sub-Eddington accreting massive black holes: a comparison of slim and thin accretion discs through study of the spectral energy distribution \|Castello-Mor N. Netzer H. \| MNRAS \| 458-1839 \| 2016 \| 2016MNRAS.458.1839C \| http://ui.adsabs.harvard.edu/#abs/2016MNRAS.458.1839C 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 Reflection Features in the X-Ray Spectrum of Fairall 9 and Implications for Tests of General Relativity \|Liu Honghui Wang Haiyang et al. \| ApJ \| 896-160 \| 2020 \| 2020ApJ...896..160L \| http://ui.adsabs.harvard.edu/#abs/2020ApJ...896..160L 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 Nitrogen X-ray absorption in the local ISM \|Gatuzz Efrain Garcu00eda Javier A. \| MNRAS \| 504-4460 \| 2021 \| 2021MNRAS.504.4460G \| http://ui.adsabs.harvard.edu/#abs/2021MNRAS.504.4460G Testing General Relativity with Black Hole X-Ray Data \|Bambi Cosimo \| ARep \| 65-902 \| 2021 \| 2021ARep...65..902B \| http://ui.adsabs.harvard.edu/#abs/2021ARep...65..902B A Systematic Study of the Short-term X-Ray Variability of Seyfert Galaxies. I. Diversity of the X-Ray rms Spectra \|Hu Jingwei Jin Chichuan et al. \| ApJ \| 936-105 \| 2022 \| 2022ApJ...936..105H \| http://ui.adsabs.harvard.edu/#abs/2022ApJ...936..105H Estimating black hole spin from AGN SED fitting: the impact of general-relativistic ray tracing \|Hagen Scott Done Chris \| MNRAS \| 525-3455 \| 2023 \| 2023MNRAS.525.3455H \| http://ui.adsabs.harvard.edu/#abs/2023MNRAS.525.3455H 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 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 New 511 keV Line Data Provide Strongest sub-GeV Dark Matter Constraints \|De la Torre Luque Pedro Balaji Shyam \| ApJ \| 973-L6 \| 2024 \| 2024ApJ...973L...6D \| http://ui.adsabs.harvard.edu/#abs/2024ApJ...973L...6D
Instrument	EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage	2013-12-19T06:20:42Z/2014-01-03T02:38:42Z
Version	21.51_20241115_1113
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	2015-01-20T23:00:00Z
Last Update	2026-07-09
Keywords	"xray source", "inner disk", "XMM-Newton", "compton thick", "slow modulations punctuated", "partially cover", "xmm newton spectroscopy", "post dip", "implies violent disruption", "f9 reveals", "XMM", "xray variability", "agn fairall", "xray dipping", "accretion physics", "triggered xmm newton", "accretion instabilities", "deep dips"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Prof Christopher Reynolds, 2015, 'Exploring the unusual X-ray dipping in the luminous Seyfert galaxy Fairall 9', 21.51_20241115_1113, European Space Agency, https://doi.org/10.5270/esa-3gf1wvf
Rights	Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license.