| Proposal ID | 050278 |
| Title | An XMM-Newton Sample of Unusually X-Ray Bright Broad Absorption Line Quasars |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0502780101 |
| DOI | https://doi.org/10.5270/esa-j3iwevr |
| Principal Investigator, PI | Dr Robert Gibson |
| Abstract | Recent optical spectroscopy has identified a large sample of SDSS quasars (QSOs)with broad CIV and/or MgII absorption lines (BALs). The relationship between UVand X-ray absorbers/continuum is controversial, with important implications formodels of QSO structure. Short, 10 ks observations of X-ray bright BALQs willgive CCD X-ray spectra enabling us to measure and constrain absorber states,continuum properties, and Fe Ka lines, with ramifications for BALQ structure.Our targets are unusually X-ray bright for BALQs. Understanding theseexceptional sources will shed light on the physics of BALQs in general. Oursample includes four radio-loud and two low-ionization BALQs; high-counts X-rayspectra of such objects are rare. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2007-05-20T15:50:37Z/2007-10-15T13:34:18Z |
| 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 | 2008-11-27T00:00:00Z |
| Last Update | 2026-07-09 |
| Keywords | "counts xray spectra", "XMM-Newton", "optical spectroscopy", "XMM", "xmm newton sample", "broad civ", "xray absorbers", "xray bright balqs", "SDSS", "constrain absorber", "balq structure", "shed light", "ccd xray spectra", "low ionization balqs", "sdss quasars qsos", "qso structure", "fe ka lines", "xray bright", "continuum properties" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Robert Gibson, 2008, 'An XMM-Newton Sample of Unusually X-Ray Bright Broad Absorption Line Quasars', 21.51_20241115_1113, European Space Agency, https://doi.org/10.5270/esa-j3iwevr |
| Rights | Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license. |