[GLOW] Gravitational Lensing of Waves
Ente: European Commission
Scadenza: 2031-08-31
Importo max: 2.185.007 EUR
Paese: EU
Descrizione
Gravitational lensing provides invaluable insight into astrophysics, cosmology, and fundamental physics. Now, a new frontier is open thanks to observational breakthroughs in gravitational waves (GWs) and fast radio bursts (FRBs). Like visible light, these signals are deflected and magnified by gravitational fields, but their phase coherence exposes wave-optics lensing phenomena: wavefront distortions that can help us identify very distant sources and characterize the intervening matter distribution. Planned facilities have the capacity to detect lensed GWs and FRBs in this decade, but an advanced framework is needed to identify and interpret these novel signals.
GLOW will leverage the unique properties of coherent sources to discover lensed signals and spearhead progress in astrophysics and fundamental physics. Over the last 4 years, the PI’s group has pioneered the study of wave-optics lensing and developed an advanced code to study its signatures. Building on this expertise, GLOW will formulate the theory needed to describe realistic matter distributions and robustly search for lensed GWs in LIGO-Virgo-KAGRA data. GLOW will unravel high-redshift sources, assess galactic nuclei as the origin of GWs, and empower FRBs to identify extragalactic planet-scale lenses. GLOW will drastically improve constraints on dark-matter objects and prepare LISA to scrutinize the cold dark matter paradigm. It will deliver novel tests of General Relativity and dark-energy theories, far more powerful than a mere confirmation of GW lensing. In addition its potential to timely spark transformative science, GLOW will allow us to prepare for upcoming facilities by hearing GWs and seeing FRBs beyond our current horizons. These advances will establish coherent gravitationally lensed sources as an engine for discovery.
Settori: Gravitational lensing, microlensing, tests of gravity
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