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.
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.
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
