| Proposal ID | 030311 |
| Title | X-ray Observations of Optically-Selected Type 2 Quasars |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0303110101 |
| DOI | https://doi.org/10.5270/esa-sozn7gb |
| Principal Investigator, PI | Dr Andrew Ptak |
| Abstract | Using the SDSS, we have identified a large number of type II quasars(high-luminosity obscured AGN, with L_bol > 10^45 ergs/s) at redshift z < 0.8.We are conducting a comprehensive multi-wavelength follow-up of the mostluminous objects in the sample. We propose to continue our survey of type IIquasars with XMM to obtain a large sample of objects with known X-rayproperties. Our primary goal is to quantify their degree of obscuration. We alsowill study the statistical properties of quantities such as X-ray spectral slopeand L_X/LOIII relative to Seyfert 2 galaxies and for the first time determinethe distribution of the absorbing column densities among the luminous type IIquasars. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2005-07-14T06:27:34Z/2006-06-20T19:40:18Z |
| 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 | 2007-07-25T00:00:00Z |
| Last Update | 2026-07-09 |
| Keywords | "redshift z", "absorbing column densities", "x ray", "luminous objects", "type ii quasars", "SDSS", "xray properties", "XMM", "luminosity obscured agn", "comprehensive multi wavelength", "xray spectral slope", "statistical properties" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Andrew Ptak, 2007, 'X-ray Observations of Optically-Selected Type 2 Quasars', 21.51_20241115_1113, European Space Agency, https://doi.org/10.5270/esa-sozn7gb |
| Rights | Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license. |