| 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 |
| 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 |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2018-05-14T21:12:49Z/2018-05-25T11:35:29Z |
| 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 | 2019-06-08T22:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "zone sizes", "fixed luminosity", "evolutionary scenario", "cosmic time", "xray properties", "XMM-Newton", "wide range", "luminous quasar", "constant spectral properties", "lower redshifts", "distant quasar", "XMM", "luminous quasars" |
| 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', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-x3wulxq |