| Proposal ID | 084402 |
| Title | Unveiling the nuclear properties of the most luminous quasar in the Universe |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0844020101 |
| DOI | https://doi.org/10.5270/esa-wet6m21 |
| Principal Investigator, PI | Dr Luca Zappacosta |
| Abstract | Hyperluminous (>10^47 erg/s) and overmassive (>>10^9 Msun) quasars at z>~4.5-5provide invaluable testbeds for supermassive black-hole (SMBH) formation models.Currently only three broad-line radio-quiet quasars are known with bolometricluminosities Lbol >1e+48 erg/s. Two of them have measured masses larger than10-billions Msun. The most luminous of them is the only one lacking (i) X-rayobservations and (ii) a measure of the SMBH mass (M_SMBH). We propose here jointXMM-Newton and VLT/X-SHOOTER observations of this quasar in order to shed lighton its nuclear X-ray properties, obtain a reliable measure of M_SMBH andestimate its radiative output in terms of the Eddington luminosity. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2019-10-24T16:49:37Z/2019-10-25T14:38:01Z |
| 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 | 2020-12-02T23:00:00Z |
| Last Update | 2026-06-19 |
| Keywords | "nuclear xray properties", "x shooter", "smbh mass m_smbh", "overmassive >>", "bolometric luminosities lbol", "XMM", "xmm newton", "masses larger", "nuclear properties", "eddington luminosity", "XMM-Newton", "msun quasars", "luminous quasar", "shed light", "z >~", "billions msun", "radiative output", "invaluable testbeds" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Luca Zappacosta, 2020, 'Unveiling the nuclear properties of the most luminous quasar in the Universe', 21.51_20241115_1113, European Space Agency, https://doi.org/10.5270/esa-wet6m21 |
| Rights | Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license. |