|Title||Exploring changing-look AGNs through the QPE analogy: the case of Mrk 590|
|Author||Dr Giovanni Miniutti|
|Description||Mrk 590 is one of the best monitored changing-look AGN. After a decay during which the continuum dimmed and the optical broad line disappeared together with the soft X-ray excess, Mrk 590 is now awakening and broad line and soft excess have re-emerged. We request two relatively inexpensive (25 ks) observations, that will be spaced by about 6 months, to follow the X-ray spectral evolution during the current rise. The recently discovered QPE phenomenon (Miniutti et al 2019, Nature) may be invoked to account for the spectacular variability of this and other changing-look AGNs. If so, the analogy predicts that the soft X-ray excess should increase in strength and temperature during the rise.|
|Publication||No observations found associated with the current proposal|
|Instrument||EMOS1, EMOS2, EPN, OM, RGS1, RGS2|
|Mission Description||The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's 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 Earth's 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.
|Publisher And Registrant||European Space Agency|
|Credit Guidelines||European Space Agency, 2022-01-27T00:00:00Z, 086547, 18.02_20200221_1200. https://doi.org/10.57780/esa-hsel9jc|