|Title||Unveiling the nuclear properties of the most luminous quasar in the Universe|
|Author||Dr Luca Zappacosta|
|Description||Hyperluminous (>10^47 erg-s) and overmassive (>>10^9 Msun) quasars at z>virgul4.5-5 provide invaluable testbeds for supermassive black-hole (SMBH) formation models. Currently only three broad-line radio-quiet quasars are known with bolometric luminosities Lbol >1e+48 erg-s. Two of them have measured masses larger than 10-billions Msun. The most luminous of them is the only one lacking (i) X-ray observations and (ii) a measure of the SMBH mass (M_SMBH). We propose here joint XMM-Newton and VLT-X-SHOOTER observations of this quasar in order to shed light on its nuclear X-ray properties, obtain a reliable measure of M_SMBH and estimate its radiative output in terms of the Eddington luminosity.|
|Publication||No observations found associated with the current proposal|
|Instrument||EMOS1, EMOS2, EPN, OM, RGS1, RGS2|
|Mission Description||The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's 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 Earth's 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.
|Publisher And Registrant||European Space Agency|
|Credit Guidelines||European Space Agency, 2020-12-02T23:00:00Z, 084402, 17.56_20190403_1200. https://doi.org/10.5270/esa-wet6m21|