A dataset provided by the European Space Agency

Name: X-ray time delays in NGC 6814
Published: 2017-05-11T22:00:00Z

Proposal ID	076462
Title	X-ray time delays in NGC 6814
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0764620101
DOI	https://doi.org/10.5270/esa-xuiap3j
Principal Investigator, PI	Dr Andrew Lobban
Abstract	When combined with high S/N spectroscopy, X-ray timing properties - inparticular, X-ray time lags - allow one to gain physical insights into accretionand reprocessing near black holes in unprecedented detail. Here, we propose onesuch study of NGC 6814 (130ks) - a rapidly variable AGN in which a recent Suzakuobservation revealed the presence of a strong hard lag with an intriguingenergy-dependence while interestingly displaying no evidence of strongreprocessing in its X-ray spectrum. By utilising the high sensitivity ofXMM-Newton we propose to perform a detailed spectral-timing study of NGC 6814,taking full advantage of the opportunity to test the hypotheses surrounding theproduction of X-ray time delays in an environment free from complex spectral components.
Publications	Eclipsing the X-Ray Emitting Region in the Active Galaxy NGC 6814 \|Gallo, Luigi C., Gonzalez, Adam G., \| ApJ \| 908-33 \| 2021 \| 2021ApJ...908L..33G \| http://ui.adsabs.harvard.edu/#abs/2021ApJ...908L..33G 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 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 What can be learnt from a highly informative X-ray occultation event in NGC 6814? A marvellous absorber \|Kang, Jia-Lai, Wang, Jun-Xian, \| MNRAS \| 525-1941 \| 2023 \| 2023MNRAS.525.1941K \| http://ui.adsabs.harvard.edu/#abs/2023MNRAS.525.1941K A colourful analysis: Probing the eclipse of the black hole and central engine in NGC 6814 using X-ray colour-colour grids \|Pottie, B., Gallo, L. C., et al. \| MNRAS \| 525-3633 \| 2023 \| 2023MNRAS.525.3633P \| http://ui.adsabs.harvard.edu/#abs/2023MNRAS.525.3633P 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	2016-04-08T04:59:00Z/2016-04-09T17:27:20Z
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	2017-05-11T22:00:00Z
Keywords	"ngc 6814", "xray time lags", "ngc 6814 130", "XMM", "gain physical insights", "xray spectrum", "xray time delays", "variable agn", "intriguing energy", "NGC 6814", "XMM-Newton", "interestingly displaying", "hard lag", "complex spectral components", "xmm newton"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Andrew Lobban, 2017, 'X-ray time delays in NGC 6814', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-xuiap3j