Re: 'Something big'
if an FRB lasts 3ms then whatever made it is no larger than 1,000km across
I'm curious about how you've arrived at this figure. My understanding is that the mechanism behind FRBs is unknown, nad there are several postulated explanations. Is this making an assumption that they are caused by one of these postulated mechanisms, in which case, which one, and can you give more details?