| Proposal ID | 069399 |
| Title | X-ray spectroscopy of the first z>7 QSO |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0693990101 |
| DOI | https://doi.org/10.5270/esa-sfc98w7 |
| Principal Investigator, PI | Dr Mathew Page |
| Abstract | 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 bediscovered at z>7, ULAS J1120 is a unique probe of the intergalactic medium deepin the epoch of reionization, and already constrains the neutral fraction to bemore than 10% at z=7. Its black hole is estimated to be 2.0e9 Msun, and thesmall size of the ionized region in which it is embedded implies it has beenshining for less than 10^7 yrs. Thus it also provides important constraints onthe formation and evolution of massive black holes. We propose to obtain anX-ray spectrum with XMM-Newton to examine the physical conditions in this youngQSO, and to better determine its ionizing spectrum for reionization modelling. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2012-05-23T10:49:06Z/2012-06-21T16:12:42Z |
| 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 | 2013-07-12T00:00:00Z |
| Last Update | 2026-07-09 |
| Keywords | "ulas j1120", "ionizing spectrum", "XMM-Newton", "persistent source", "physical conditions", "760 myr", "0e9 msun", "XMM", "intergalactic medium deep", "embedded implies", "xray spectrum", "neutral fraction", "massive black holes", "x ray spectroscopy", "reionization modelling", "ionized region", "xmm newton", "distant qso" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Mathew Page, 2013, 'X-ray spectroscopy of the first z>7 QSO', 21.51_20241115_1113, European Space Agency, https://doi.org/10.5270/esa-sfc98w7 |
| Rights | Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license. |