| Proposal ID | 050091 |
| Title | A new population of FRIIs? |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0500910101 |
| DOI | https://doi.org/10.5270/esa-exuuip4 |
| Principal Investigator, PI | Dr Rita Sambruna |
| Abstract | Unification scenarios explain various flavors of radio galaxies and quasars withorientation-dependent obscuration effects. Type-2 FRII galaxies contain a quasarseen through a dusty molecular torus aligned with the radio jet. However, thereexist a population of FRIIs, found with Spitzer, that does not fit into thisscheme. These FRIIs exhbit high-excitation nuclear optical emission lines, butweak 15um luminosities. One possibility is very large obscuration;alternatively, they may be a genuinely different population. XMM spectroscopyand Chandra imaging will discriminate between the two scenarios. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2007-09-01T04:20:54Z/2008-01-01T08:18:55Z |
| 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 | 2009-02-07T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "weak 15um luminosities", "chandra imaging", "radio jet", "xmm spectroscopy", "frii galaxy", "friis exhbit", "friis ?.", "XMM", "unification scenarios explain" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Rita Sambruna, 2009, 'A new population of FRIIs?', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-exuuip4 |