Abstract

Invited Talk - Plenary

Wednesday, 11 September 2024, 09:00   (Aula 1&2 / virtual plenum)

Exploring the low-frequency gravitational wave sky

Michael Kramer
Max-Planck-Institut für Radioastronomie

Last summer, the European Pulsar Timing Array (EPTA) and the Indian Pulsar Timing Array (InPTA) published a series of papers reporting their joint results from data collected over 25 years by six of the world's most sensitive radio telescopes, including the longest data set globally as obtained with the Effelsberg 100-m radio telescope. They found evidence of ultra-low frequency gravitational waves expected from pairs of supermassive black holes at the centres of merging galaxies. These results are similar to results published at the same time by other collaborations, and represent a major milestone in opening a new, astrophysically rich window in the gravitational wave spectrum. The talk will summarise the past and on-going efforts and gives an update on the latest results.