Volker Beckmann
French Ministry of Higher Education, Research and Space
General Directorate for Research and Innovation
Service for Research and Innovation Strategy
Department for Digital Services and Infrastructures
(in short: MESRE / DGRI / SSRI / A7)
23 Avenue du Dr. Lannelongue
75014 Paris
France
The text book on supermassive black holes:
Beckmann & Shrader, Active Galactic Nuclei, Wiley-VCH, Berlin
Last update: October 2025 by beckmann (at) in2p3.fr