A dataset provided by the European Space Agency

Name 020346
Title X-RAY SPECTRA OF HIGH REDSHIFT QUASARS
URL

https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0203460101
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0203460201

DOI https://doi.org/10.5270/esa-yriv8c2
Author Prof SMITA MATHUR
Description We propose to harness both the un-equalled sensitivity of XMM and its broad energy band to systematically study a sample of 9 high redshift(z > 4) quasars, the most luminous, youngest and least studied objects known(4 new observations). XMM can determine accurately both the absorption column density and the X-ray spectral shape allowing us to resolve intriguing, outstanding questions such as: Is the apparent difference between the X-ray spectra of high-redshift radio-loud and radio-quiet quasars real? If so, is it explained by intrinsic absorption or by different evolution of the X-ray spectrum with redshift? What constraints can we place on the X-ray spectral evolution with redshift and-or luminosity for each class? What limits can we put on intervening Damped Ly-alpha systems?
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2004-01-31T12:20:14Z/2004-12-23T09:37:00Z
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 2006-01-27T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2006-01-27T00:00:00Z, 020346, 17.56_20190403_1200. https://doi.org/10.5270/esa-yriv8c2