| 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 | 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 | 2008-11-27T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "counts xray spectra", "qso structure", "broad civ", "balq structure", "SDSS", "xmm newton sample", "optical spectroscopy", "shed light", "continuum properties", "XMM-Newton", "xray bright balqs", "sdss quasars qsos", "ccd xray spectra", "fe ka lines", "xray absorbers", "low ionization balqs", "xray bright", "XMM", "constrain absorber" |
| 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', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-j3iwevr |