GWG

Friday 8 May 2026, 15:00 → 17:00 Europe/Paris

Nikolaos Karnesis (Aristotle University of Thessaloniki)

We will be discussing the GWG package, a code for estimating the confusion noise signal from gravitational waves emitted by compact Galactic Binaries.

LISA will measure a very large number of transient and quasi-monochromatic sources. For this reason, a Global Fit analysis strategy has been proposed, consisting essentially of a large-scale Blocked-Gibbs sampling scheme. This scheme is, however, computationally expensive, which may prohibit us from performing forecast studies of stellar population models with LISA. The GWG software, on the other hand, offers a cost-effective alternative, as it is based on SNR criteria and simplifying assumptions. It can therefore serve as a simulation of the Global Fit pipeline, yielding robust results and enabling the aforementioned studies.

The code will be illustrated through specific examples and applications.

Gitlab page: gitlab.in2p3.fr/Nikos/gwg 

[Zoom link]

gwg_tutorial.mp4

Introduction: Detecting Galactic Binaries with LISA

In this introductory session we will review the LISA mission, its scientific objectives and the data analysis challenges we are going to face.

Convener: Nikolaos Karnesis (Aristotle University of Thessaloniki)

20260508_gwg_tutorial.pdf

Tutorial: GWG hands on

Tutorial of the gwg package. We will learn how to install all the necessary packages, preprocess the binaries catalogues, and perform the iterative subtraction algorithm.

Convener: Nikolaos Karnesis (Aristotle University of Thessaloniki)

gwg_tutorial.ipynb