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Originally Posted by antoniseb
It is curious that this is so different from the usual GRBs we see, both in reduced luminosity and increased duration. It could be that this was slightly off-line, and that we were seeing the Gammas emitted as the beam plowed through clouds over an extended time, instead of all at once when the alignment is near perfect.
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May we reasonably deduce that this type of low intensity GBR is so rarely observed precisely because of its low intensity, in other words that if it had been much further away, it would quite simply have gone unobserved? This would in turn suggest that this type of event may therefore be quite commonplace, especially in cases where intensity levels are even lower than that observed here.
As regards the idea that intensity and duration may in some way be linked to a GRB being "slightly off-line", do you mean that we only see the much more common, very short-duration, extremely intense GRBs because the Earth happens to be in the path of some kind of colimated jet emanating from the emitting object?
Sorry, I realize I am enlarging the discussion beyond the initial concern with GRB 060218, perhaps there is another thread for discussing GRBs in general which you could redirect me to. Thanks!