  Filaments connected to galaxy clusters are crucial environments to study the
building up of cosmic structures as they funnel matter towards the clusters'
deep gravitational potentials. Identifying gas in filaments is a challenge, due
to their lower density contrast which produces faint signals. The best chance
to detect these signals is therefore in the outskirts of galaxy clusters. We
revisit the X-ray observation of the cluster Abell 2744 using statistical
estimators of anisotropic matter distribution to identify filamentary patterns
around it. We report for the first time the blind detection of filaments
connected to a galaxy cluster from X-ray emission using a filament-finder
technique and a multipole decomposition technique. We compare this result with
filaments extracted from the distribution of spectroscopic galaxies, through
which we demonstrate the robustness and reliability of our techniques in
tracing a filamentary structure of 3 to 5 filaments connected to Abell 2744.
