A dataset provided by the European Space Agency

Name: X-RAY-UV-OPTICAL REVERBERATION MAPPING OF LOW MASS AGN
Published: 2018-06-29T22:00:00Z
License: https://creativecommons.org/licenses/by-nc/3.0/igo

Proposal ID	080508
Title	X-RAY-UV-OPTICAL REVERBERATION MAPPING OF LOW MASS AGN
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0805080401 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0805080501
DOI	https://doi.org/10.5270/esa-ee6vbby
Principal Investigator, PI	Prof Ian McHardy
Abstract	Recent Swift observations of 4 medium mass AGN show that UV/optical variationslag higher energies as expected from reprocessing of high energies by anaccretion disc. However the measured disc sizes are 3x larger than expected fromtheory and in 2 AGN the X-rays lead the UV by more than expected. It is alsounclear whether earlier poor X-ray/optical correlations in high accretion rate(mdot) AGN are just due to inadequate sampling. We have recently shown that, forlow masses, XMM can measure the crucial X-ray/UV lag and correlation strengthvery simply. Here we request to observe 4 low mass AGN with a range of mdot tomeasure that crucial lag and, from the ground, also the X-ray/g-band lag, sothat the above problems, and any variation with mass or mdot can be properly understood.
Publications	X-ray reverberation lags from the 1.5 Seyfert galaxy NGC 5273 \|Vincentelli F. M. Mastroserio G. et al. \| MNRAS \| 492-1135 \| 2020 \| 2020MNRAS.492.1135V \| http://ui.adsabs.harvard.edu/#abs/2020MNRAS.492.1135V 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 Variability in a low-mass active galactic nucleus: oscillation or eruption? \|Webbe Robbie Young A. J. \| MNRAS \| 518-3428 \| 2023 \| 2023MNRAS.518.3428W \| http://ui.adsabs.harvard.edu/#abs/2023MNRAS.518.3428W Multiple flares in the changing-look AGN NGC 5273 \|Neustadt J. M. M. Hinkle J. T. et al. \| MNRAS \| 521-3810 \| 2023 \| 2023MNRAS.521.3810N \| http://ui.adsabs.harvard.edu/#abs/2023MNRAS.521.3810N Searching for quasi-periodic eruptions using machine learning \|Webbe Robbie Young A. J. \| RASTI \| 2-238 \| 2023 \| 2023RASTI...2..238W \| http://ui.adsabs.harvard.edu/#abs/2023RASTI...2..238W 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 Search for Young Stellar Objects within 4XMM-DR13 Using CatBoost and SPE \|Ma Xiangyao Zhang Yanxia et al. \| AJ \| 168-210 \| 2024 \| 2024AJ....168..210M \| http://ui.adsabs.harvard.edu/#abs/2024AJ....168..210M 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	2017-06-02T20:43:18Z/2017-06-05T15:21:18Z
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	2018-06-29T22:00:00Z
Last Update	2026-06-19
Keywords	"disc sizes", "inadequate sampling", "3x larger", "accretion disc", "XMM", "correlation strength", "uv lag", "low mass agn", "medium mass agn", "optical variations lag", "band lag", "optical correlations", "low masses"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Prof Ian McHardy, 2018, 'X-RAY-UV-OPTICAL REVERBERATION MAPPING OF LOW MASS AGN', 21.51_20241115_1113, European Space Agency, https://doi.org/10.5270/esa-ee6vbby
Rights	Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license.