Following the discovery of IC 2497 and Hanny.s Voorwerp, the citizen scientiststaking part in the Galaxy Zoo project have identified a sample of low-redshiftgalaxies with extended AGN-photoionized clouds indicative of a Seyfert-luminosity AGN. We select a sample of 7 such galaxies where the lack of infraredemission makes it plausible that the AGN phase illuminating the cloud has shutdown within the light travel time to the cloud. We propose to use XMM-Newton toobserve these objects, as in IC 2497, to test whether these AGN have indeed shutdown and thus providing a measurement of significant AGN variability onpreviously inaccessible timescales.
A Tale of Two Narrow-line Regions: Ionization, Kinematics, and Spectral Energy Distributions for a Local Pair of Merging Obscured Active Galaxies |Hainline, Kevin N., Hickox, Ryan C., et al. | ApJ | 823-42 | 2016 | 2016ApJ...823...42H | http://ui.adsabs.harvard.edu/#abs/2016ApJ...823...42H
The close environments of accreting massive black holes are shaped by radiative feedback |Ricci, Claudio, Trakhtenbrot, Benny, et al. | Natur | 549-488 | 2017 | 2017Natur.549..488R | http://ui.adsabs.harvard.edu/#abs/2017Natur.549..488R
BAT AGN Spectroscopic Survey (BASS) - VI. The GammaX-L/LEdd relation |Trakhtenbrot, Benny, Ricci, Claudio, et al. | MNRAS | 470-800 | 2017 | 2017MNRAS.470..800T | http://ui.adsabs.harvard.edu/#abs/2017MNRAS.470..800T
BAT AGN Spectroscopic Survey. V. X-Ray Properties of the Swift/BAT 70-month AGN Catalog |Ricci, C., Trakhtenbrot, B., et al. | ApJS | 233-17 | 2017 | 2017ApJS..233...17R | http://ui.adsabs.harvard.edu/#abs/2017ApJS..233...17R
The Swift/BAT AGN Spectroscopic Survey. IX. The Clustering Environments of an Unbiased Sample of Local AGNs |Powell, M. C., Cappelluti, N., et al. | ApJ | 858-110 | 2018 | 2018ApJ...858..110P | http://ui.adsabs.harvard.edu/#abs/2018ApJ...858..110P
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
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2012-03-02T09:59:47Z/2012-03-02T19:01:02Z
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.
European Space Agency, Dr Kevin Schawinski, 2013, 'Probing AGN Variability on 10-100 kyr Timescales', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-xgznjli
