Research report 2018 - Max Planck Institute for Astrophysics

Finding needles in a haystack

Kauffmann, Guinevere
Max-Planck-Institut für Astrophysik, Garching
Previous studies of large AGN samples both a low and at high redshifts seemed to rule out galaxy mergers as the drivers for black hole growth. A new technique developed at MPA for selecting a rare type of active galactic nuclei now show that it is possible to identify a new class of AGN in which more than 80% of the galaxies turn out to be merging or interacting systems, with clear indications of an accreting black hole. A detailed statistical analysis then reveals that mergers drive black hole formation in the most massive galaxies in the local Universe.

For the full text, see the German version.

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