| Name | 030063 |
| Title | High-redshift GPS/CSS quasars |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0300630101 |
| DOI | https://doi.org/10.5270/esa-4ltq6nx |
| Author | European Space Agency |
| Description | Giga-Hertz-Peaked Spectrum (GPS) and Compact Steep Spectrum (CSS) sources are believed to be either young or ..frustrated versions. of the large-scale radio sources. In X-ray surveys they constitute a high fraction of sources at high redshifts, they are the brightest quasars at radio, optical, and X-ray wavelengths, and they are frequently associated with intrinsic excess absorption. High-z quasars give, on the other hand, precious information on the physical conditions in the early Universe. We propose an observation of a sample of high-z GPS quasars, with the purposes of studying the connection between the GPS phenomenon and intrinsic absorption at high redshift and to examine the spectral differences with respect to the bulk of radio-loud quasars. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2005-04-01T13:18:14Z/2006-01-20T01:56:04Z |
| 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 | 2007-02-09T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2007, High-Redshift Gps/Css Quasars, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-4ltq6nx |