Comment on Scientists confirm that the first black hole ever imaged is actually spinning
hotdaniel@lemmy.zip 9 months agoI see. Thank you. So, you can use light to infer the mass, and then the volume information to infer the spin? Easy enough.
Comment on Scientists confirm that the first black hole ever imaged is actually spinning
hotdaniel@lemmy.zip 9 months agoI see. Thank you. So, you can use light to infer the mass, and then the volume information to infer the spin? Easy enough.
AbouBenAdhem@lemmy.world 9 months ago
That would be a general way, if we were close enough to observe the shape of the event horizon (which we aren’t).
The article is describing another way, which only works in this case because the black hole is precessing so extremely: the changing axis of rotation is frame-dragging the polar jets along with it.