A dataset provided by the European Space Agency

Name: Catching AGN in Deep Minimum States to Unveil Their Core Environment
Published: 2019-11-05T23:00:00Z

Proposal ID	082053
Title	Catching AGN in Deep Minimum States to Unveil Their Core Environment
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0820530401
DOI	https://doi.org/10.5270/esa-pmdkwma
Principal Investigator, PI	Dr Norbert Schartel
Abstract	The deep minimum state of AGNs is characterized by a strongly suppressed or evenabsent primary continuum. As the continuum disappears weak spectral featureslike relativistic iron lines or narrow soft X-ray emission lines from ionisedplasmas become highly significant and their parameters can be determined.Therefore deep minimum states offer unique possibilities to investigate indetail the physics of the reprocessed components in AGN, including the immediatevicinity of the supermassive black hole. Applying our experience (several deepminimum observations) we propose 2 triggered 10ks XMM snapshot, one 80ks XMMfollow-up simultaneous with one 80ks NuSTAR one 2-orbit HST observation of anAGN in deep minimum state. We will identify deep minimum states mainly based on Swift and XMM-Newton slews.
Publications	Broad-band X-ray observations of the 2018 outburst of the changing-look active galactic nucleus NGC 1566 \|Jana, Arghajit, Kumari, Neeraj, et al. \| MNRAS \| 507-687 \| 2021 \| 2021MNRAS.507..687J \| http://ui.adsabs.harvard.edu/#abs/2021MNRAS.507..687J Response of the Fe K\\u03b1 line emission to the X-ray continuum variability in the changing-look active galactic nucleus NGC 1566 \|Liang, W. C., Shu, X. W., et al. \| JHEAp \| 33-20 \| 2022 \| 2022JHEAp..33...20L \| http://ui.adsabs.harvard.edu/#abs/2022JHEAp..33...20L Thermal Comptonization in a Changing Corona in the Changing-look Active Galaxy NGC 1566 \|Tripathi, Prakash, Dewangan, Gulab Chand, \| ApJ \| 930-117 \| 2022 \| 2022ApJ...930..117T \| http://ui.adsabs.harvard.edu/#abs/2022ApJ...930..117T Coevolution of Broad Emission Lines and X-Ray Spectrum in Changing-look AGNs \|Liu, Hao, Wu, Qingwen, \| ApJ \| 930-46 \| 2022 \| 2022ApJ...930...46L \| http://ui.adsabs.harvard.edu/#abs/2022ApJ...930...46L 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
Instrument	EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage	2018-10-04T12:34:16Z/2018-10-05T18:34:16Z
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	2019-11-05T23:00:00Z
Keywords	"absent primary continuum", "NuSTAR", "reprocessed components", "xmm snapshot", "XMM", "relativistic iron lines", "ionised plasmas", "deep minimum", "xmm newton slews", "XMM-Newton", "supermassive black hole", "catching agn", "orbit hst", "HST"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Norbert Schartel, 2019, 'Catching AGN in Deep Minimum States to Unveil Their Core Environment', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-pmdkwma