All Questions
Tagged with accretion-disk event-horizon
9
questions
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105
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Can stars gravitationally shield a black hole?
Is it possible to arrange a set of massive objects such as stars in orbit around a black hole such that objects of lesser mass cannot physically reach and fall into the event horizon of the black hole?...
4
votes
1
answer
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Why don’t black rings exist in 3+1 dimensions?
In higher dimensions black holes can take different forms. Besides spheroids, there are also “black rings” which have a toroidal event horizon. However, in our 3+1 dimension no black ring solution has ...
- 1,455
1
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1
answer
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Rotating black hole
I know that everything that is shaped from gravity force is rotating, and gravity is a central force. but I want to know how can we detect that a black hole has an angular momentum? By which ...
- 39
3
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1
answer
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Neutrinos and black holes
As a new user I could not comment on Do neutrinos of any flavor get trapped in black holes?
My question is that the Ice Cube facility has mapped Neutrinos coming from black holes, as stated in ...
1
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0
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Does the latest picture of EHT mean the end to the no hair theorem?
I couldn't help but noticing what looks like "hair" in the latest image from EHT.
Does this mean the end of the no hair theorem?
Pun intended but also a serious question.
- 25.3k
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Does infalling material leaves a detectable imprint on the black hole's event horizon?
An external observer will never see anything cross the event horizon, and in most explanations the story ends here.
But I wonder what happens with gravitational effects of the material?
For example ...
- 8,150
43
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3
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Why isn't the circumferential light around the M87 black hole's event horizon symmetric?
After the revelation of the first black hole images, it seems there is a bias towards the south side. Is it because of measuring it from earth or is it something more fundamental in the understanding ...
- 3,366
1
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2
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If you fell into a black whole with an accretion disc, but perpendicular
If you fell into a black whole with an accretion disc, but orthogonal to the plane of the disc - would you ever meet the disc?
I'm not asking whether you survive long enough, and obviously we assume ...
- 462
4
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Why does a black hole grow when it consumes matter? Isn't this a contradiction?
I've been thinking about this for a while but can't get my head around it.
A black hole's mass is such that its gravity can overcome light. Its event horizon, as I see it, is the boundary up to which ...
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