IFIC Seminar: Gravitational Wave Orchestra - Being Sensitive is Crucial!

por Jishnu Suresh (Centre for Cosmology, Particle Physics and Phenomenology (CP3), Institute de Recherche en Mathématique et Physique (IRMP), Université catholique de Louvain.)

martes 10 oct. 2023 12:00 → 13:30 Europe/Madrid

As we enter the fourth observing run of the Advanced LIGO, Virgo, and KAGRA detector network, we are thrilled to register nearly forty gravitational-wave event candidates. This event rate, with detections occurring every two to three days, is remarkable. Starting from the first observing run, the events detected so far are hundreds of binary black hole mergers, two binary neutron star mergers, and the first observations consistent with binaries formed of a black hole and a neutron star. These detections have deepened our understanding of binary black holes and neutron star populations. Moreover, they've empowered us to make a more robust assessment of the stochastic gravitational wave background, which emerges from the incoherent superposition of many unresolvable signals in the universe. Although these backgrounds are individually undetectable, they can be detected as a collectivity via their common influence on multiple detectors. This phenomenon can be likened to a musical symphony where each binary black hole or neutron star represents a soloist, and the collective hum offers a glimpse into our universe's primordial past.

This IFIC Seminar has received funding/support from the GVA Research Project "Understanding non-perturbative Phenomena in fundamental physics" (PROMETEO/2021/083)

Jishnu_IFIC_10 Oct 2023.pdf