The Eddington ratio-dependent ‘changing look’ events in NGC 2992

Muryel Guolo,Daniel Ruschel-Dutra,Dirk Grupe,Bradley M. Peterson,Thaisa Storchi-Bergmann,Jaderson Schimoia,Rodrigo Nemmen,Andrew Robinson

Monthly Notices of the Royal Astronomical Society（2021）

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摘要

We present an analysis of historical multiwavelength emission of the `Changing Look' (CL) Active Galactic Nucleu (AGN) in NGC 2992, covering epochs ranging from 1978 to 2021, as well as new X-ray and optical spectra. The galaxy presents multiple Seyfert type transitions from Type 2 to intermediate-type, losing and regaining its Hα broad emission lines (BEL) recurrently. In X-rays, the source shows...

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关键词

galaxies: nuclei,galaxies: Seyfert,X-rays: galaxies

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