December 8, 2023
Europe/Amsterdam timezone

Stochastic Gravitational Wave Background Analysis with SBI

Dec 8, 2023, 2:45 PM
Ruppert B (Marinus Ruppertgebouw)

Ruppert B

Marinus Ruppertgebouw



James Alvey (University of Amsterdam)


In some sense, the detection of a stochastic gravitational wave background (SGWB) is one of the most subtle GW analysis challenges facing the community in the next-generation detector era. For example, at an experiment such as LISA, to extract the SGWB contributions, we must simultaneously: detect and analyse thousands of highly overlapping sources including massive binary black holes mergers and galactic binaries; constrain and characterise the instrumental noise (which will not be known fully pre-flight and may be non-stationary); and finally separate the SGWB components that might be astrophysical or cosmological in origin. In this brief talk, I will discuss the application of simulation-based inference techniques, implemented in the code saqqara, to this analysis problem, focussing on the ability of SBI to strike a balance between the potentially conflicting goals of precision, scalability, and computational cost.

Primary author

James Alvey (University of Amsterdam)


Dr Christoph Weniger (University of Amsterdam) Mr Uddipta Bhardwaj (GRAPPA, University of Amsterdam)

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