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X-ray and UV monitoring of the extraordinary changing-look AGN Mrk 1018

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ESA Earth Online2026-06-22 收录
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We propose two quasisimultaneous observations of XMM (each 65 ks) and HST (each2 orbits) to understand the ongoing changes of changinglook AGN Mrk 1018.Optical monitoring revealed that the dramatic dimming phase stopped, suggestingthat the accretion disk is in a major reconfiguration phase. The combined deepexposure will reveal which spectral components have changed since a high S/N XMMspectrum was taken during the bright phase a few years ago. Comparing the twoAO17 observations will allow us to look for spectral changes on halfyeartimescales. These two XMM observations will fill the gaps of our alreadyaccepted low S/N Chandra monitoring program on Mrk 1018. The joint HSTobservations will allow us to establish the states of the accretion disk and how this connects to the Xray corona. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]

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European Space Agency
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