A dataset provided by the European Space Agency

Name 069399
Title X-ray spectroscopy of the first z>7 QSO


DOI https://doi.org/10.5270/esa-sfc98w7
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
Temporal Coverage 2012-05-23T10:49:06Z/2012-06-21T16:12:42Z
Version 17.56_20190403_1200
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.
Creator Contact https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk
Date Published 2013-07-12T00:00:00Z
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