Iron lines are observed ubiquitously in AGN, offering a powerful probe of theblack hole surroundings. Mrk 841 provides a puzzling case in which the narrowiron line, usually associated with the torus or the broad line region, varies onhours time scales. This can be due either an unusually small emission region forthe narrow line, or due to hot spots orbiting very close to the black hole whoseemission is occasionally Doppler-boosted. With the source visibility nowallowing for long exposures, we propose to observe it for two orbits,simultaneously with NuSTAR, to solve the puzzle. Confirming any of the proposedmechanisms offer an exciting opportunity to unravel unprecedented details aboutthe line emission region.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2022-02-10T01:19:11Z/2022-02-13T15:23:08Z
Version
20.09_20221024_1724
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, 2023, 'Solving The Puzzle of The Variable Narrow Iron Line in Mrk 841', 20.09_20221024_1724, European Space Agency, https://doi.org/10.57780/esa-aasysjz
