# Invitation to Barcelona Talk **Opening (not a real abstract):** I hope this message finds you well. I was glad to meet you in Milan. As promised, more links about gravitational waves and the representation of black holes merging. This is a video produced by the LIGO collaboration and this is the original research paper I would be very happy if you could accept the invitation and give a talk in Barcelona. I am thinking about suitable dates, what about the 9th of May 2019? Let me know whether you have another preferred date/time of the year and I will try to arrange things. Looking forward to hearing from you. Very best, Silvia **Authors:** [[Invitation - UAB]]