A dataset provided by the European Space Agency

Proposal ID 050091
Title A new population of FRIIs?
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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
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
Keywords "weak 15um luminosities", "XMM", "radio jet", "friis exhbit", "chandra imaging", "xmm spectroscopy", "frii galaxy", "unification scenarios explain", "friis ?."
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Rita Sambruna, 2009, 'A new population of FRIIsquestionMark', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-exuuip4