Search Results for author: Frank Ohme

Found 7 papers, 5 papers with code

Convolutional Neural Networks for signal detection in real LIGO data

no code implementations12 Feb 2024 Ondřej Zelenka, Bernd Brügmann, Frank Ohme

Searching the data of gravitational-wave detectors for signals from compact binary mergers is a computationally demanding task.

Training Strategies for Deep Learning Gravitational-Wave Searches

1 code implementation7 Jun 2021 Marlin B. Schäfer, Ondřej Zelenka, Alexander H. Nitz, Frank Ohme, Bernd Brügmann

We find that the deep learning algorithms can generalize low signal-to-noise ratio (SNR) signals to high SNR ones but not vice versa.

Detection of gravitational-wave signals from binary neutron star mergers using machine learning

1 code implementation2 Jun 2020 Marlin B. Schäfer, Frank Ohme, Alexander H. Nitz

Compared to other state-of-the-art machine learning algorithms, we find an improvement by a factor of 6 in sensitivity to signals with signal-to-noise ratio below 25.

BIG-bench Machine Learning Time Series +1

Frequency-domain gravitational waves from non-precessing black-hole binaries. I. New numerical waveforms and anatomy of the signal

2 code implementations28 Aug 2015 Sascha Husa, Sebastian Khan, Mark Hannam, Michael Pürrer, Frank Ohme, Xisco Jiménez Forteza, Alejandro Bohé

Equipped with our prediction for the final state we then develop a simple and accurate merger-ringdown-model based on modified Lorentzians in the gravitational wave amplitude and phase, and we discuss a simple method to represent the low frequency signal augmenting the TaylorF2 post-Newtonian approximant with terms corresponding to higher orders in the post-Newtonian expansion.

General Relativity and Quantum Cosmology

Frequency-domain gravitational waves from non-precessing black-hole binaries. II. A phenomenological model for the advanced detector era

2 code implementations28 Aug 2015 Sebastian Khan, Sascha Husa, Mark Hannam, Frank Ohme, Michael Pürrer, Xisco Jiménez Forteza, Alejandro Bohé

Beyond the calibration region the model produces physically reasonable results, although we recommend caution in assuming that \emph{any} merger-ringdown waveform model is accurate outside its calibration region.

General Relativity and Quantum Cosmology

A simple model of complete precessing black-hole-binary gravitational waveforms

no code implementations14 Aug 2013 Mark Hannam, Patricia Schmidt, Alejandro Bohé, Leila Haegel, Sascha Husa, Frank Ohme, Geraint Pratten, Michael Pürrer

The non-precessing-binary waveforms are then "twisted up" with approximate expressions for the precessional motion, which require only one additional physical parameter, an effective precession spin, $\chi_p$.

General Relativity and Quantum Cosmology

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