| Proposal ID | 020316 |
| Title | XMM-NEWTON OBSERVATIONS OF A NEW POPULATION OF RADIO QUASARS |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0203160101 |
| DOI | https://doi.org/10.5270/esa-qhu2wk8 |
| Principal Investigator, PI | Dr PAOLO PADOVANI |
| Abstract | We have recently discovered a new class of flat-spectrum radio quasars (FSRQ)with synchrotron peak frequencies, nu_peak}, in the UV/X-ray band, set apartfrom classical FSRQ, which typically have nu_peak in the optical/IR band. Wepropose to observe the eight FSRQ in the Deep X-ray Radio Blazar Survey withestimated nu_peak greater than 10**15 Hz to study their X-ray properties and pindown the emission process. The confirmation (or not) of the nature of FSRQ withhigh-energy synchrotron peaks and the subsequent detailed study of theirproperties have important implications for our understanding of jet formationand synchrotron cooling and their relationship to accretion disk properties andaccretion rates in all radio-loud AGN. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2003-12-17T06:24:27Z/2004-07-19T11:29:58Z |
| Version | 21.51_20241115_1113 |
| 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 | 2006-02-10T00:00:00Z |
| Last Update | 2026-07-09 |
| Keywords | "", "accretion disk properties", "energy synchrotron pea", "radio quasars", "jet formation", "nu_peak }", "estimated nu_peak", "set apart", "synchrotron cooling", "radio loud agn", "x ray band", "synchrotron peak frequencies", "ir band", "accretion rates", "XMM", "emission process", "xray properties", "xmm newton" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr PAOLO PADOVANI, 2006, 'XMM-NEWTON OBSERVATIONS OF A NEW POPULATION OF RADIO QUASARS', 21.51_20241115_1113, European Space Agency, https://doi.org/10.5270/esa-qhu2wk8 |
| Rights | Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license. |