Colloquium 29 january 2026 - Probing the low frequency gravitational wave universe with a galactic-scale detector
Relatore: Alberto Sesana - Università di Milano-Bicocca
29-01-2026 | 15:00 | Aula Rostagni
Register here: https://indico.dfa.unipd.it/event/1669/
On June 202 3 several collaborations around the world published evidence for nano-Hz frequency gravitational waves (GWs) in pulsar timing data. I will describe the technique of pulsar timing and how it can be used to detect low frequency GWs, the detected signal and its possible interpretations. The primary candidate is the cosmic population of massive black hole binaries (MBHBs) but a cosmological origin is not ruled out by observations. I will discuss the importance of this detection and the way ahead to pin down the nature of the signal.
