Hello! I need to do some analysis for a project with the SXS gravitational wave data: https://data.black-holes.org/waveforms/catalog.html but I am a bit confused about the initial conditions of their simulations. I read the paper they published about the data (it can be found at that website) but i am still not sure I understand. I attached several weaveforms I extracted from their database (the y axis has ##h_+##). So it seems like the starting time (in their units) is the same for all the waveforms. But I am not sure how that is defined. More specifically, for the purpose of my project, I would like to know what defines the initial frequency of each gravitational wave in their simulations. Can someone help me with this? Thank you!
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