Thanks for the pointers to the two articles. The S&T one gave some good details. I'm wondering of the January GRB was the same object, or a conincidence.

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.

Alternatively, these 1c supernovae might NOT be the source for most GRBs.

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Forming opinions as we speak