A dataset provided by the European Space Agency

Name: MEASURING CORONAL PROPERTIES OF TWO HIGH REDSHIFT, LUMINOUS QUASARS
Published: 2018-03-29T22:00:00Z

Proposal ID	079082
Title	MEASURING CORONAL PROPERTIES OF TWO HIGH REDSHIFT, LUMINOUS QUASARS
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0790820101
DOI	https://doi.org/10.5270/esa-q0l07ql
Principal Investigator, PI	Dr Guido Risaliti
Abstract	We propose NuSTAR and XMM joint observations of two quasars at z=2.36 andz=3.37, with the main goal of measuring the high-energy cutoffs of their X-rayemission. Only recently the high S/N NuSTAR spectra allowed precise measurementsof these parameters for the brightest local AGN, finding cutoff energies above100~keV. Here we demonstrate that the same estimates are possible also for thebrightest high-z quasars, if (and only if) the whole 0.5-80~keV band isobserved. The scientific outcome is of great value: we will be able to testwhether the same physical conditions hold in quasars at luminosities $>$100times higher than those probed so far in the nearby Universe. An importantadditional scientific goal will be the study of the X-ray absorption by the intervening IGM.
Publications	Bulk Comptonization: new hints from the luminous blazar 4C+25.05 \|Kammoun E. S. Nardini E. et al. \| MNRAS \| 473-89 \| 2018 \| 2018MNRAS.473L..89K \| http://ui.adsabs.harvard.edu/#abs/2018MNRAS.473L..89K 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 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 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	2017-01-15T07:03:10Z/2017-01-15T22:16:30Z
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	2018-03-29T22:00:00Z
Last Update	2026-03-04
Keywords	"luminous quasars", "energy cutoffs", "kev band", "finding cutoff energies", "XMM", "intervening igm", "xray absorption", "nearby universe", "coronal properties", "NuSTAR", "scientific outcome", "luminosities $>$", "xray emission", "physical conditions hold", "additional scientific", "brightest local agn"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Guido Risaliti, 2018, 'MEASURING CORONAL PROPERTIES OF TWO HIGH REDSHIFT, LUMINOUS QUASARS', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-q0l07ql