3 ms·
Maybe stupid question - what would happen to the star, if it actually 'collided' with black hole - ie black hole flew right through its core, not just casually
by saiya-jin 6y ago
Maybe stupid question - what would happen to the star, if it actually 'collided' with black hole - ie black hole flew right through its core, not just casually going nearby, trapping each other and black hole slowly sucking it dry?
I would expect the thing to be over rather swiftly, albeit probably with some accretion disc still generating some radiation.
- kijin 6y agoA head-on collision with a black hole will likely produce a very noticeable explosion. Black holes don't just vacuum up all the matter around them silently. Any matter falling into a black hole, not just the accretion disk, emits radiation. This radiation causes surrounding matter to expand outward, counteracting the gravity of the black hole. A black hole trying to eat an entire star at once will quickly exceed its Eddington limit [1] and most of the remaining matter will be blown away. [1] https://en.wikipedia.org/wiki/Eddington_luminosity https://en.wikipedia.org/wiki/Eddington_luminosity
- rini17 6y agoBefore the actual head-on collision the star would be spaghettified(that's actual term, see below) by the black hole's gravity and that... is not a silent process, with exception of supermassive black holes. https://en.wikipedia.org/wiki/Spaghettification https://en.wikipedia.org/wiki/Spaghettification