Dr. Benjamin Trakhtenbrot

חוג לפיזיקה ואסטרונומיה סגל אקדמי בכיר
Dr. Benjamin Trakhtenbrot
Phone: 03-6406108
External phone: 03-6406108
Office: Kaplun, 114


My research focuses on the formation and evolution of the most massive black holes in the universe, and how these processes are linked to the galaxies that host these “super-massive” black holes. The main theme of my work is the observed cosmic history of mass assembly onto these extreme objects, across all observable cosmic epochs, as probed by measurements of the most basic properties of the black holes and of their host galaxies. A complimentary thrust aims at improving our understanding of the physics of accretion onto super-massive black holes. All these research efforts are pursued by using a wide variety of data - including large surveys in the optical and X-ray regimes, detailed (near-infrared) spectroscopy, and sub-millimeter interferometry - obtained with some of the most advanced ground- and space-based telescopes.

My current research efforts include:

  • Understanding the fast growth of the first generation of super-massive black holes (1 billion years after the Big Bang) - links to host galaxies and cosmological environments

  • A large and complete census of growing  super-massive black holes in galaxies’ centers, in the local universe

  • How can we identify fast, supra-critical accretion in the observed universe?

  • How do super-massive black holes appear when they “switch on” or “shut down”?


  • B.Sc. in Physics and in Computer Science (Cum Laude), Tel Aviv University, 2006

  • Ph.D. in Physics, Tel Aviv University, 2013

Academic Appointments

  • Postdoctoral fellow, Weizmann Institute of Science, 2012-2013

  • Postdoctoral fellow, Swiss Federal Institute for Technology in Zurich (ETH), 2013-2018

  • Senior Lecturer (c.f. Assistant Professor), Tel Aviv University, 2018-present

Awards and Prizes

  • The School of Physics and Astronomy award for outstanding achievements in public outreach, awarded by the Tel Aviv University, 2010

Tel Aviv University, P.O. Box 39040, Tel Aviv 6997801, Israel
UI/UX Basch_Interactive