| Name | 030575 |
| Title | Partially obscured quasars in the local universe |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0305750101 |
| DOI | https://doi.org/10.5270/esa-uiagipw |
| Author | European Space Agency |
| Description | We propose an XMM survey of low redshift partially obscured quasars discovered in the Sloan Digital Sky Survey (SDSS). These objects are characterized by large Balmer decrements, stellar-light dominated continuum, luminous broad Halpha and narrow [OIII]. With an estimated density similar to optical-color selected QSOs, this large population of obscured QSOs has many impacts on quasar studies, such as the inclination oriented unification scheme. However, it is far from clear whether they are absorbed but otherwise normal quasars, or a special class of objects. X-rays will provide a unique view to distinguish between these possibilities, and allow us to determine this objects. contribution to the X-ray background. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2005-05-23T16:10:55Z/2005-12-11T04:47:24Z |
| 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 | 2007-12-12T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2007, Partially Obscured Quasars In The Local Universe, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-uiagipw |