Proposal ID | 010306 |
Title | X-ray observations of high-redshift quasars |
Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0103060101 |
DOI | https://doi.org/10.5270/esa-g2m9t36 |
Principal Investigator, PI | Dr Bernd Aschenbach |
Abstract | GT-This study aims at a detailed spectral comparison of high-z radio-loud and radio-quiet quasars. The data can provide new insights in quasar formationprocesses, the evolution and the enigmatic radio-loud/quiet dichotomy. Inparticular the following questions can be addressed: Do spectral differencesbetween radio-loud and radio-quiet quasars persist to high redshifts? Do radioquiet quasars show intrinsic absorption similar to radio-loud quasars, and dothey show spectral evolution? High redshift quasars further serve as back-ground sources to study intervening systems like the intergalactic mediumand damped Ly-alpha systems. Is is important to note that XMM provides the last possibility for the foreseeable future to study the X-ray spectra of RQQs. |
Publications |
|
Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
Temporal Coverage | 2001-05-01T03:21:11Z/2002-08-01T20:11:05Z |
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 | 2003-09-11T00:00:00Z |
Last Update | 2025-01-27 |
Keywords | "spectral comparison", "spectral evolution", "foreseeable future", "intervening systems", "enigmatic radio loud", "intergalactic medium", "x ray", "quiet dichotomy", "radio loud", "radio quiet quasars", "radio loud quasars", "XMM", "z radio loud", "quasar formation processes", "redshift quasars", "xray spectra", "ground sources" |
Publisher And Registrant | European Space Agency |
Credit Guidelines | European Space Agency, Dr Bernd Aschenbach, 2003, 'X-ray observations of high-redshift quasars', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-g2m9t36 |