Search Results for author: Bela Szilagyi

Found 5 papers, 2 papers with code

Constraining the parameters of GW150914 & GW170104 with numerical relativity surrogates

1 code implementation24 Aug 2018 Prayush Kumar, Jonathan Blackman, Scott E. Field, Mark Scheel, Chad R. Galley, Michael Boyle, Lawrence E. Kidder, Harald P. Pfeiffer, Bela Szilagyi, Saul A. Teukolsky

In this paper we demonstrate the viability of these surrogate models as reliable parameter estimation tools, and show that within a fully Bayesian framework surrogates can help us extract more information from gravitational wave observations than traditional models.

General Relativity and Quantum Cosmology 83C57, 83C35 J.2

On the accuracy and precision of numerical waveforms: Effect of waveform extraction methodology

no code implementations21 Dec 2015 Tony Chu, Heather Fong, Prayush Kumar, Harald P. Pfeiffer, Michael Boyle, Daniel A. Hemberger, Lawrence E. Kidder, Mark A. Scheel, Bela Szilagyi

We find that numerical truncation error, error due to gravitational wave extraction, and errors due to the finite length of the numerical waveforms are of similar magnitude, with gravitational wave extraction errors somewhat dominating at noise-weighted mismatches of $\sim 3\times 10^{-4}$.

General Relativity and Quantum Cosmology

Effective-one-body model for black-hole binaries with generic mass ratios and spins

no code implementations11 Nov 2013 Andrea Taracchini, Alessandra Buonanno, Yi Pan, Tanja Hinderer, Michael Boyle, Daniel A. Hemberger, Lawrence E. Kidder, Geoffrey Lovelace, Abdul H. Mroue, Harald P. Pfeiffer, Mark A. Scheel, Bela Szilagyi, Nicholas W. Taylor, Anil Zenginoglu

Gravitational waves emitted by black-hole binary systems have the highest signal-to-noise ratio in LIGO and Virgo detectors when black-hole spins are aligned with the orbital angular momentum and extremal.

General Relativity and Quantum Cosmology

Comparing Gravitational Waveform Extrapolation to Cauchy-Characteristic Extraction in Binary Black Hole Simulations

no code implementations13 Sep 2013 Nicholas W. Taylor, Michael Boyle, Christian Reisswig, Mark A. Scheel, Tony Chu, Lawrence E. Kidder, Bela Szilagyi

The direct NP approach is simpler than CCE, but NP waveforms can be contaminated by near-zone effects---unless the waves are extracted at several distances from the source and extrapolated to infinity.

General Relativity and Quantum Cosmology

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