While he doesn't have the full scoop, being at NASA he does an inside track on some of the research, especially if it involves the Hubble or some of the clustering stuff he's working with.
Anyway, aparantly there is quite some contention between the groups working on the project about the results and the interpretation of them. Such a huge black hole would have destroyed any such feeder star in the nova that created the black hole. But there it is, a relatively small star feeding it's very heavy brother.
Try this link, it offers a bit more detail. Perhaps Walt can offer a bit more, he's better at explaining this stuff anyway.
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Anyway, aparantly there is quite some contention between the groups working on the project about the results and the interpretation of them. Such a huge black hole would have destroyed any such feeder star in the nova that created the black hole. But there it is, a relatively small star feeding it's very heavy brother.
Try this link, it offers a bit more detail. Perhaps Walt can offer a bit more, he's better at explaining this stuff anyway.