| Proposal ID | 060009 |
| Title | X-ray Absn. in the Most-Distant Radio-Loud Quasars: Widespread or Exceptional? |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0600090101 |
| DOI | https://doi.org/10.5270/esa-hfybo28 |
| Principal Investigator, PI | Prof William Brandt |
| Abstract | We propose to extend our systematic X-ray studies of the most-distant knownquasars with XMM-Newton spectroscopy of five typical radio-loud quasars (RLQs)at z = 3.98-4.97. Our targets are more representative of the overall RLQpopulation than the small number of highly radio-loud blazars studied at z ~ 4,and we have detected all targets in exploratory Chandra observations. We willsearch for X-ray absorption in the quasars environments to determine if it iscommon among typical RLQs at the highest redshifts. We will also measure X-raycontinuum shapes and search for variability and clustered AGN. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2010-01-01T02:47:18Z/2010-01-08T04:59:02Z |
| 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 | 2011-02-02T00:00:00Z |
| Last Update | 2025-08-04 |
| Keywords | "XMM", "x ray absn", "xray continuum shapes", "XMM-Newton", "typical rlqs", "radio loud blazar", "systematic xray", "overall rlq population", "xmm newton spectroscopy", "xray absorption", "exploratory chandra", "clustered agn" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Prof William Brandt, 2011, 'X-ray Absn. in the Most-Distant Radio-Loud Quasars: Widespread or Exceptional?', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-hfybo28 |