| Proposal ID | 072101 |
| Title | Mapping the Inner Accretion Disk Wind in the Quasar PDS 456 |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0721010201 |
| DOI | https://doi.org/10.5270/esa-qsixpuj |
| Principal Investigator, PI | Dr James Reeves |
| Abstract | PDS 456 is the most luminous nearby AGN, more typical of quasars at highredshift. A previous 40ks XMM-Newton (2001) observation revealed deep, highlyionised absorption at iron K and at 1 keV in the RGS spectrum. Subsequent Suzakuobservations resolved the powerful ionised outflow, moving at 0.25c and revealeda direct response of the iron K absorption to a decrease in the ionising flux.We propose to monitor the remarkable spectral variability and outflow from PDS456, through a series of 5x100ks XMM-Newton observations. From the timescale ofthe absorber variability we will probe the inner structure of the quasar wind,on scales of 10s-100s of Rg from the black hole and determine the intrinsicmechanism for the rapid variability in PDS 456. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2013-08-27T04:23:26Z/2014-02-27T22:52:06Z |
| 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 | 2015-03-26T23:00:00Z |
| Last Update | 2025-08-04 |
| Keywords | "XMM", "powerful ionised outflow", "XMM-Newton", "subsequent suzaku", "quasar pds 456", "quasar wind", "xmm newton 2001", "5x100 xmm newton", "pds 456", "spectral variability", "rgs spectrum", "inner structure", "absorber variability", "luminous nearby agn", "rapid variability", "ionised absorption", "ionising flux" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr James Reeves, 2015, 'Mapping the Inner Accretion Disk Wind in the Quasar PDS 456', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-qsixpuj |