05.09 - Summary: Teetering on the Edge [커세라 강의 페이지]
On our approach to a black hole using our example of Cygnus X-1, we identified a number of structures that are visible from the environment around the black hole. Now, we find ourselves teetering on the edge of stability on the precipice of the innermost stable circular orbit.
Looking away from the black hole, we can see the bright material within the accretion disk being fed by a nearby companion star within its Roche lobe.
Looking above the disk around the black hole, a faint glow is evidence of the corona, and stretching brightly off the poles of the black hole, we see towering jets, columns of accelerating plasma that can stretch thousands and millions of light years in length.
Our next step takes us within the ISCO radius. There, without a powerful rocket engine to escape, we will eventually fall across the black hole's event horizon.
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