We propose to perform a continuous 75 ks XMM-Newton observation of the SeyfertMkn 841 to elucidate the origin of its very peculiar iron line complex. An XMMobservation done in 2001 has revealed a line which was unresolved by the EPIC-pninstrument, which then disappeared in an observation 12 hours later. There is nosimple explanation for this behaviour. If the line is truly narrow and, e.g.,originates from the torus, it should not be rapidly variable. If it is from theaccretion disk, it should not be narrow. A long XMM observation will providecrucial information to fulfill the purpose of this proposal. It will permit 1)to obtain a high signal-to-noise line profile to search for any broad wings, and2) to study the rapid line variability behaviour to better understand its origin.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2005-01-16T12:32:22Z/2005-07-17T14:43:54Z
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 PIERRE-OLIVIER PETRUCCI, 2006, 'PROBING THE ORIGIN OF THE RAPIDLY VARIABLE IRON LINE OF MKN 841', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-sl87m0l
