2 code implementations • 23 Oct 2023 • Digvijay Wadekar, Tejaswi Venumadhav, Ajit Kumar Mehta, Javier Roulet, Seth Olsen, Jonathan Mushkin, Barak Zackay, Matias Zaldarriaga
To model aligned-spin $(3, 3)$, $(4, 4)$ waveforms corresponding to a given $(2, 2)$ waveform, we use a combination of post-Newtonian formulae and machine learning tools.
1 code implementation • 15 Apr 2019 • Tejaswi Venumadhav, Barak Zackay, Javier Roulet, Liang Dai, Matias Zaldarriaga
The most secure new event, GW170121 ($p_{\rm astro} > 0. 99$), is also notable due to its inferred negative value of $\chi_{\rm eff}$, which is inconsistent with being positive at the $\approx 95. 8\%$ confidence level.
High Energy Astrophysical Phenomena Cosmology and Nongalactic Astrophysics Instrumentation and Methods for Astrophysics General Relativity and Quantum Cosmology
1 code implementation • 27 Feb 2019 • Barak Zackay, Tejaswi Venumadhav, Liang Dai, Javier Roulet, Matias Zaldarriaga
We report a new binary black hole merger in the publicly available LIGO First Observing Run (O1) data release.
High Energy Astrophysical Phenomena Instrumentation and Methods for Astrophysics General Relativity and Quantum Cosmology
2 code implementations • 21 Dec 2015 • Barak Zackay, Eran O. Ofek
Here, we build on these results and derive from first principles a coaddition technique which is optimal for any hypothesis testing and measurement (e. g., source detection, flux or shape measurements and star/galaxy separation), in the background-noise-dominated case.
Instrumentation and Methods for Astrophysics Cosmology and Nongalactic Astrophysics
2 code implementations • 21 Dec 2015 • Barak Zackay, Eran O. Ofek
We show that for these purposes the best way to combine images is to apply a matched filter to each image using its own point spread function (PSF) and only then to sum the images with the appropriate weights.
Instrumentation and Methods for Astrophysics
