Supermassive black hole at the heart of the Milky Way is approaching the cosmic speed limit, dragging space-time along with it

Aug 27, 2020
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As confounding as the physics of black holes is, it seems to me that you should still be able to define its rotation as a function of number of revolutions per interval of time, which would put it into a much more understandable frame of reference than a number between 0 and 1. Has the speed of Sag A been defined in such terms, and if so, it was an epic fail for the author not to mention that number in this article.
 
Feb 16, 2023
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As confounding as the physics of black holes is, it seems to me that you should still be able to define its rotation as a function of number of revolutions per interval of time, which would put it into a much more understandable frame of reference than a number between 0 and 1. Has the speed of Sag A been defined in such terms, and if so, it was an epic fail for the author not to mention that number in this article.
As far as I am aware, there has not been any luck in seeing a wobble in Sag A, so there is no way of calculating the spin.