Reverberation time lags have been observed in several AGN. The iron lineresponds to changes in the illuminating continuum with a delay comparable to thelight crossing time a few gravitational radii from the black hole. Objects sofar with iron K reverberation have broad relativistic lines with strong redwings, supporting their origin in relativistic reverberation. Not all observedAGN however have broad Fe K lines with strong red wings. If the relativisticreverberation hypothesis is correct, objects with a relatively narrow, butrelativistic, Fe K lines should show longer delays and narrower lag-energyprofiles. Here we propose to observe NGC 5506 to directly test this hypothesis.The new data will provide constraints on the black hole spin independently from spectroscopy and timing.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2015-07-07T21:57:03Z/2015-07-09T10:37:03Z
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 ABDERAHMEN ZOGHBI, 2016, 'Iron K Reverberation in an Object with a Narrow Relativistic Fe K Line', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-fwdjgz9
