When a star dies, it leaves a 'silent' gap in its gravitational waves that’s as unique as a fingerprint.
March 30, 2026
Original Paper
The Gravitational-Wave Power Gap in Core-Collapse Supernovae: Insights from 60 Axisymmetric Simulations
arXiv · 2603.26408
The Takeaway
Researchers found that this specific gap in the gravitational 'sound' of a supernova reveals the exact density and sound speed of matter inside a forming neutron star. It allows us to 'hear' the internal physics of an explosion that is otherwise hidden from view.
From the abstract
We analyse the gravitational-wave emission from 60 two-dimensional core-collapse supernova simulations. The models cover a range of progenitors and equations of state. We focus on the narrow frequency interval in the gravitational-wave spectrum where the emitted power is strongly suppressed (the power gap) and how its central frequency relates to the physical properties of the simulations. We find that the power-gap frequency exhibits strong and systematic correlations with the properties of the