Research

My research is in gravitational-wave physics, with an emphasis on data-analysis methods for compact-binary signals. Much of my current work is motivated by the computational and conceptual challenges posed by next-generation gravitational-wave detectors.

Fast gravitational-wave inference

Bayesian parameter estimation for compact binaries is computationally expensive, particularly for long-duration signals and large detector networks. I work on methods that reduce the cost of likelihood evaluation while retaining the structure of the underlying waveform and detector response.

Current work includes fast likelihood evaluation using reduced frequency representations, relative binning, meshfree interpolation, and methods adapted to the long signals expected in third-generation detectors.

Long-duration signals and next-generation detectors

Binary neutron-star signals may remain in third-generation detectors for hours. Over these timescales the rotation of the Earth changes the detector response and cannot be treated as a small correction.

I am interested in exploiting the structure of this time dependence rather than treating it as an additional numerical complication. This includes sidereal decompositions of the detector response, fast parameter estimation, sky localization, and the role of future detector networks including LIGO-India, Einstein Telescope, and Cosmic Explorer.

Searches and template banks

Matched-filter searches for compact binaries require template banks that cover high-dimensional waveform parameter spaces efficiently.

My work in this area includes stochastic template placement, geometric methods based on the waveform metric, and the use of low-discrepancy sequences such as Sobol and Halton sequences to improve the efficiency and uniformity of template-bank construction.

Tests of general relativity

Gravitational-wave observations provide direct tests of the dynamics of strong-field gravity.

I work on parameterized tests of general relativity using compact-binary signals, including computational methods for allowing deviations from the general-relativistic waveform while retaining fast likelihood evaluation.

Neutron-star physics

Gravitational-wave observations of binary neutron stars also constrain the equation of state of dense nuclear matter.

I am interested in hierarchical inference of neutron-star equation-of-state parameters from populations of binary neutron-star observations, and in understanding how the information accumulates across events.

Publications

A complete list of publications is available on INSPIRE-HEP.