A dataset provided by the European Space Agency

Name: Exploring the X-ray properties of the most luminous quasars at z>6.5
Published: 2019-06-08T22:00:00Z
License: https://creativecommons.org/licenses/by-nc/3.0/igo

Proposal ID	082440
Title	Exploring the X-ray properties of the most luminous quasars at z>6.5
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0824400101 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0824400201 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0824400301
DOI	https://doi.org/10.5270/esa-x3wulxq
Principal Investigator, PI	Dr Estelle Pons
Abstract	Using data from DES and VISTA, we have recently discovered three of the mostluminous quasars known with redshift z>6.5 including the second most distantquasar and second most luminous quasar at z>6.5. The wide range in rest frame UVSED and ionized near-zone sizes of z>6 quasars suggest a significant diversityin the environments and ages of the quasars at fixed luminosity and redshift.Recent studies have shown that the X-ray properties of high-redshift (z>5.5-6.5)quasars do not differ from those at lower redshifts, suggesting constantspectral properties over cosmic time. However only one quasar above z>6.5 haveX-ray observations. We propose to observe with XMM-Newton three luminous z>6.5quasars in order to test the non-evolutionary scenario at higher redshift.
Publications	X-ray properties of z u2273 6.5 quasars \|Pons E. McMahon R. G. et al. \| MNRAS \| 491-3884 \| 2020 \| 2020MNRAS.491.3884P \| http://ui.adsabs.harvard.edu/#abs/2020MNRAS.491.3884P An X-ray fading UV brightening QSO at z u2248 6 \|Vito F. Mignoli M. et al. \| A&A \| 663-159 \| 2022 \| 2022A&A...663A.159V \| http://ui.adsabs.harvard.edu/#abs/2022A&A...663A.159V HYPerluminous quasars at the Epoch of ReionizatION (HYPERION): A new regime for the X-ray nuclear properties of the first quasars \|Zappacosta L. Piconcelli E. et al. \| A&A \| 678-201 \| 2023 \| 2023A&A...678A.201Z \| http://ui.adsabs.harvard.edu/#abs/2023A&A...678A.201Z 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 HYPERION. Shedding light on the first luminous quasars: A correlation between UV disc winds and X-ray continuum \|Tortosa A. Zappacosta L. et al. \| A&A \| 691-A235 \| 2024 \| 2024A&A...691A.235T \| http://ui.adsabs.harvard.edu/#abs/2024A&A...691A.235T
Instrument	EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage	2018-05-14T21:12:49Z/2018-05-25T11:35:29Z
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	2019-06-08T22:00:00Z
Last Update	2026-07-09
Keywords	"zone sizes", "lower redshifts", "XMM-Newton", "luminous quasar", "evolutionary scenario", "luminous quasars", "constant spectral properties", "wide range", "XMM", "cosmic time", "xray properties", "distant quasar", "fixed luminosity"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Estelle Pons, 2019, 'Exploring the X-ray properties of the most luminous quasars at z>6.5', 21.51_20241115_1113, European Space Agency, https://doi.org/10.5270/esa-x3wulxq
Rights	Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license.