| Name | 020434 |
| Title | X-RAY OBSERVATIONS OF OPTICALLY-SELECTED TYPE 2 QUASAR CANDIDATES |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0204340101 |
| DOI | https://doi.org/10.5270/esa-e7ecq6p |
| Author | European Space Agency |
| Description | Using the Sloan Digital Sky Survey, we have identified a large number of candidate type 2 quasars, i.e., possibly obscured AGN of both high luminosity and high redshift. We are conducting a comprehensive follow-up of this sample with XMM, HST, SIRTF and ground-based telescopes. From this sample, we have selected seven candidates with z=0.3-0.8 which are among the most luminous objects in the sample. We wish to use XMM both to confirm their AGN character (by detecting an X-ray continuum) and to quantify their degree of obscuration (by measuring the column density of soft X-ray absorption). If these objects are confirmed to be type 2 quasars by these XMM observations, we will have found an important new way to discover substantial numbers of this important class. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2004-01-12T22:53:29Z/2004-08-20T18:35:45Z |
| Version | 17.56_20190403_1200 |
| Mission Description | The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's 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 Earth's 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 | 2005-09-14T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2005, X-Ray Observations Of Optically-Selected Type 2 Quasar Candidates, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-e7ecq6p |