A dataset provided by the European Space Agency

Proposal ID 009007
Title Exploring the Central Engines of Luminous Quasars
Download Data Associated to the proposal

https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0090070101
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0090070201
DOI https://doi.org/10.5270/esa-rly0y4f
Principal Investigator, PI Dr James Reeves
Abstract The main power source in quasars is thought to come from matter accreting onto a supermassive black hole. This proposal concerns the signatures of the central accretion disk that are present in X-ray spectra of AGN. We propose to study with XMM 4 of the most luminous known radio-quiet quasars in order to ascertain the properties of the central engine in these objects. In particular, we will use reprocessing features from the disk - in the form of a soft excess,iron K line, iron K edge and .Compton hump. - to determine the ionisationproperties of the disk. Evidence for an increased ionisation in these most luminous of quasars will support models whereby the super-massive black hole is near to Eddington-limited.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2002-01-04T23:26:11Z/2002-06-18T01:56:33Z
Version 17.56_20190403_1200
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 2003-07-10T00:00:00Z
Keywords "eddington limited", "xray spectra", "increased ionisation", "XMM", "soft excess", "ionisation properties", "radio quiet quasars", "support models whereby", "super massive blackhole", "matter accreting", "luminous quasars", "central accretion disk", "central engine", "compton hump", "central engines", "supermassive black hole", "main power source"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr James Reeves, 2003, 'Exploring the Central Engines of Luminous Quasars', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-rly0y4f