A dataset provided by the European Space Agency

Name: Confirmation of a new population of cocooned AGN
Published: 2022-10-12T00:00:00Z

Proposal ID	088408
Title	Confirmation of a new population of cocooned AGN
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0884080101 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0884080201
DOI	https://doi.org/10.57780/esa-nabfd1a
Principal Investigator, PI	Ms Claire Greenwell
Abstract	Cocooned AGN are a new population of AGN selected with MIR properties indicativeof powerful quasars, but quiescent galaxy-like optical spectra, includingweak-to-absent OIII emission. This is likely due to AGN youth or ~4 picovering factor obscuring material enshrouding the AGN, but the existing minimalX-ray data has been insufficient to differentiate between these scenarios. Wepropose a targeted campaign of 8 of the brightest CAGN in our sample. AnXMM-Newton exposure quasi-simultaneously with NuSTAR is sufficient to make thisdistinction, even up to Compton-thick levels of obscuration, with parameterdegeneracies. These observations are essential to determine the emissionmechanism responsible for the CAGN and hence push towards a complete census of black hole growth evolution.
Publications	XMM and NuSTAR Observations of an Optically Quiescent Quasar \|Greenwell Claire Gandhi Poshak et al. \| ApJ \| 934-34 \| 2022 \| 2022ApJ...934L..34G \| http://ui.adsabs.harvard.edu/#abs/2022ApJ...934L..34G A population of Optically Quiescent Quasars from WISE and SDSS \|Greenwell Claire Gandhi Poshak et al. \| MNRAS \| 527-12065 \| 2024 \| 2024MNRAS.52712065G \| http://ui.adsabs.harvard.edu/#abs/2024MNRAS.52712065G 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 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
Instrument	EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage	2021-09-25T10:25:17Z/2021-09-26T00:01:57Z
Version	19.16_20210326_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	2022-10-12T00:00:00Z
Last Update	2025-08-04
Keywords	"XMM", "XMM-Newton", "NuSTAR", "compton thick levels", "mir properties indicative", "complete census", "powerful quasars", "brightest cagn", "cocooned agn", "quiescent galaxy", "targeted campaign", "blackhole growth", "optical spectra", "parameter degeneracies", "emission mechanism", "agn youth", "push towards"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Ms Claire Greenwell, 2022, 'Confirmation of a new population of cocooned AGN', 19.16_20210326_1200, European Space Agency, https://doi.org/10.57780/esa-nabfd1a