Multi-Spacecraft Observation of the Merging of two Coronal Mass Ejections during Propagation

Benoit Lavraud1, Naïs Fargette2, Vincent N Genot2, Rungployphan Om Kieokaew3, Philippe Louarn4, Andrei Fedorov4, Alain Barthe4, Emmanuel Penou5, Illya Plotnikov2, Victor Réville6, Alexis P Rouillard6, Sergio Toledo Redondo2, Lubomir Prech7, Tereza Durovcova8, Raffaella D'Amicis9, Roberto Bruno10, Jim M Raines11, Stefano A Livi12, Matthieu Berthomier13, Christopher John Owen14 and Timothy Simon Horbury15, (1)Laboratoire d'astrophysique de Bordeaux, Pessac, France, (2)IRAP, Toulouse, France, (3)Mahidol University, Bangkok, Thailand, (4)IRAP, CNRS, Toulouse, France, (5)Universite Paul Sabatier, TOULOUSE, France, (6)Université Toulouse III - Paul Sabatier, Observatoire Midi–Pyrénées, CNRS, CNES, IRAP, Toulouse, France, (7)Charles University Prague, Prague 8, Czech Republic, (8)Charles University, Prague, Czech Republic, (9)INAF-Istituto di Astrofisica e Planetologia Spaziali, Roma, Italy, (10)INAF-IFSI, Rome, Italy, (11)University of Michigan, Ann Arbor, MI, United States, (12)SwRI, San Antonio, TX, United States, (13)LPP, Ecole Polytechnique, UPMC, Paris, France, (14)University College London, Mullard Space Science Laboratory, Dorking, United Kingdom, (15)Imperial College London, Department of Physics, London, SW7, United Kingdom