| Proposal ID | 050158 |
| Title | A Promising Ultra-High Velocity Outflow in PDS 456 |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0501580101 |
| DOI | https://doi.org/10.5270/esa-wmbrncp |
| Principal Investigator, PI | Dr Ehud Behar |
| Abstract | Although still controversial, ultra-high velocity outflows (UHVOs definedloosely by velocities exceeding 10,000 km/s) in AGNs are potentially the mostexciting new discovery in AGN physics of the XMM-Newton and Chandra era. Theluminous quasar PDS 456 is the brightest X-ray source among the grating-detectedUHVOs. We propose to obtain the best yet high-resolution spectrum of a UHVOsource. Using RGS for the soft X-ray band and EPIC for the Fe-K spectral region,we aim at measuring the UHVO velocity, column density, and thus its mass outflowrate and kinetic luminosity. Presently, the XMM-Newton/RGS with its higheffective area is the only viable configuration that can guarantee the high S/Nspectrum required for this study. |
| Publications |
|
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2007-09-12T01:07:18Z/2007-09-15T02:41:18Z |
| 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 | 2008-10-26T00:00:00Z |
| Last Update | 2026-07-09 |
| Keywords | "brightest xray source", "XMM-Newton", "agn physics", "spectral region", "XMM", "promising ultra", "mass outflow rate", "soft xray band", "uhvo source", "uhvo velocity", "kinetic luminosity", "EPIC", "column density", "viable configuration", "000 km", "chandra era", "pds 456", "resolution spectrum", "velocity outflow", "xmm newton" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Ehud Behar, 2008, 'A Promising Ultra-High Velocity Outflow in PDS 456', 21.51_20241115_1113, European Space Agency, https://doi.org/10.5270/esa-wmbrncp |
| Rights | Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license. |