|Title||X-ray spectroscopy of the first z>7 QSO|
|Author||Dr Mathew Page|
|Description||We have recently discovered the most distant QSO, ULAS J1120+0641, at z=7.085, just 760 Myr after the big bang. As the first luminous, persistent source to be discovered at z>7, ULAS J1120 is a unique probe of the intergalactic medium deep in the epoch of reionization, and already constrains the neutral fraction to be more than 10% at z=7. Its black hole is estimated to be 2.0e9 Msun, and the small size of the ionized region in which it is embedded implies it has been shining for less than 10^7 yrs. Thus it also provides important constraints on the formation and evolution of massive black holes. We propose to obtain an X-ray spectrum with XMM-Newton to examine the physical conditions in this young QSO, and to better determine its ionizing spectrum for reionization modelling.|
|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, 2013-07-12T00:00:00Z, 069399, 17.56_20190403_1200. https://doi.org/10.5270/esa-sfc98w7|