eROSITA is performing multiple all-sky X-ray surveys until 2023, and our team issystematically identifying rare accretion ignition/shut-down events -changing-look AGN - as they are transitioning. To track how the X-ray corona,UV/optical accretion disk, and optical broad-line region respond to a sudden,major change in accretion rate, we propose joint ToO observations of XMM-Newton(EPIC+OM) and VLT (FORS2) to obtain at least two observations per triggeredobject (maximum of 4 ignition events and 4 shutdown events). We will constrainthe extent of these drastic flux changes and yield crucial constraints on howthe different structural AGN components respond to dramatic changes of theaccretion rate.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2022-03-09T23:21:05Z/2023-03-14T16:45:55Z
Version
20.10_20230417_1156
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 Mirko Krumpe, 2024, 'XMM follow-ups of rare AGN ignition and shut-down events detected with eROSITA', 20.10_20230417_1156, European Space Agency, https://doi.org/10.57780/esa-251pday
