Karelle Siellez is a postdoctoral reseacher in the CRA since october 2015. After obtaining her master in Astrophysics in the Observatory of Paris, she became a doctor in Astrophysics in september 2015 in Nice (France) under the direction of Michel Boer, on the Coalescence of Compact Binaries as sources of multimessengers. She is now working under the supervision of Laura Cadonati as a member of the LIGO-VIRGO collaboration on Gravitational Waves data analysis and the coalescences of binary compact objects.