binary coalescences are one of the most promising sources of
gravitational waves for ground-based detectors such as advanced LIGO and
VIRGO. This includes binary neutron stars, neutron star - black hole
and black hole binaries. Fast and accurate theoretical models of the
gravitational radiation emitted from these coalescences are crucial for
the detection and extraction of physical parameters which would allow us
to test General Relativity in the strong field regime.
research has focused on modeling the gravitational radiation emitted by
coalescing black hole binaries. The construction of waveform models
relies on an interplay between the post-Newtonian expansion described
the inspiral, numerical relativity simulations for the strong field
solution close to the merger of the binary and perturbation theory
around the final Kerr black hole.
have carried out numerical relativity simulations of spinning black
hole binaries at the highest mass-ratios to date. These simulations have
proven instrumental for the calibration of phenomenological waveform
models calibrated to numerical relativity simulations describe the
waveform emitted from compact binaries very accurately and include many
physical details. The waveforms are obtained by integrating a
complicated set of ordinary differential equations which makes their
direct use too slow for many prime data analysis applications in
gravitational wave astronomy.
address this problem I have constructed reduced order models (ROMs) of
effective-one-body models with spins aligned with the orbital angular
momentum, accelerating their generation by several thousands. These ROMs
are now used as a crucial ingredient for gravitational wave searches
and, along with a first effective-spin precessing phenomenological
model, for parameter estimation for compact binary coalescences in the
first observing run of advanced LIGO.
- Reduced order modeling of generic spinning compact binaries described by the
- Reduced order quadratures to further accelerate the computation of likelihoods
- Parameter estimation of spinning compact binary systems
- Numerical relativity simulations of black hole binary systems
- Phenomenological waveform modeling
- Numerical analysis techniquesPublications:
Here are links to my publications: from Spires
and from the ADS database
I studied theoretical physics at Vienna University. My doctoral thesis under the supervision of Prof. Aichelburg was on critical collapse and spacetime asymptotics. Before coming to the AEI I was a Postdoc at Vienna University and then at Cardiff
University working with Mark Hannam on numerical relativity simulations and waveform modeling.