| Proposal ID | 030063 |
| Title | High-redshift GPS/CSS quasars |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0300630101 |
| DOI | https://doi.org/10.5270/esa-4ltq6nx |
| Principal Investigator, PI | Ms Elisa Ferrero |
| Abstract | Giga-Hertz-Peaked Spectrum (GPS) and Compact Steep Spectrum (CSS) sources arebelieved to be either young or frustrated versions of the large-scale radiosources. In X-ray surveys they constitute a high fraction of sources at highredshifts, they are the brightest quasars at radio, optical, and X-raywavelengths, and they are frequently associated with intrinsic excessabsorption. High-z quasars give, on the other hand, precious information on thephysical conditions in the early Universe. We propose an observation of a sampleof high-z GPS quasars, with the purposes of studying the connection between theGPS phenomenon and intrinsic absorption at high redshift and to examine thespectral differences with respect to the bulk of radio-loud quasars. |
| Publications |
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| 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 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 | 2007-02-09T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "excess absorption", "redshift gps", "css quasars", "z gps quasars", "physical conditions", "xray wavelengths", "precious information", "spectrum css sources", "z quasars", "radio loud quasars", "xray surveys", "gps phenomenon", "brightest quasars", "scale radio sources" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Ms Elisa Ferrero, 2007, 'High-redshift GPS/CSS quasars', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-4ltq6nx |