Speaker
Description
This work discusses the implementation of LongFT: a procedure to enable the exact computation of very long Fourier transforms without the need of expensive supercomputers with TeraBytes of RAM.
Our software tool will let independent researchers and/or small research groups worldwide to perform uncompromised spectral analyses, even when low in budget or computing resources.
LongFT has its perfect application in the analysis of persistent narrowband signals, such as the still-to-be-detected Continuous Gravitational Waves.
To showcase its strength, we tailor LongFT to Continuous Gravitational Wave searches, applying the algorithm to the most recent (time-domain) O3b public dataset released by the LVK Collaboration via the Gravitational Wave Open Science Center (GWOSC).
Using just a regular workstation, we compute a single exact Fourier transform of approximately 6 months of 4 kHz Float64 data.
With the results, we create the (frequency-domain) O3b-FD dataset and release it to the public under a Creative Common license.
This O3b-FD open dataset will allow for easy, fast and lightweight handling of exact frequency-domain data. It will thus enhance the sensitivity of existing computing-bounded search algorithms.
The LongFT software and the O3b-FD dataset will let researchers worldwide to more easily contribute to the search for Continuous Gravitational Waves, thus accelerating their (hopefully upcoming) discovery.
