Black Holes .
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davewhite04
Valued Senior Member
Dark matter if it exists. And maybe some rocks it's swallowing. I mean, assuming there are black holes.
Think galactic jets .
Which emanate from both poles .
So why would a BH do so ?
A singularity is one directional .
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davewhite04
Valued Senior Member
As far as we think we know, a BH has just one hole.
Yet BH has apparently two outlets of energy . Both opposite of each other . Why?
How can a singularity have two outlets of Galactic jets energy ?
davewhite04
Valued Senior Member
Where did you read 2 outlets?
DaveC426913
Valued Senior Member
A black hole is not made of energy.
It is a concentration of (normal) mass so high that even atoms are crushed down to (what we presume to be) an infinitesimally small volume.
Dark matter is not related to black holes.
Black holes are formed from collapsing stars. Stars are held stable by the balance between the radiative (outward) pressure from fusion and the (inward) pressure of gravity. When the star runs out of fuel, the radiative pressure is gone, and the gravity takes over. There is ontihng to stop it.
The jets do not come from the black hole itself. They are a product of the infalling matter - still outside the event horizon - that is squeezed by gravity and huge magnetic flux. Vast vortices of magnetic flux compress the ionized matter, but the matter manages to escape along the axes - the poles - of the magnetic field - jetting out in opposite directions at nearly the speed of light.
It is a concentration of (normal) mass so high that even atoms are crushed down to (what we presume to be) an infinitesimally small volume.
Dark matter is not related to black holes.
Black holes are formed from collapsing stars. Stars are held stable by the balance between the radiative (outward) pressure from fusion and the (inward) pressure of gravity. When the star runs out of fuel, the radiative pressure is gone, and the gravity takes over. There is ontihng to stop it.
The jets do not come from the black hole itself. They are a product of the infalling matter - still outside the event horizon - that is squeezed by gravity and huge magnetic flux. Vast vortices of magnetic flux compress the ionized matter, but the matter manages to escape along the axes - the poles - of the magnetic field - jetting out in opposite directions at nearly the speed of light.
davewhite04
Valued Senior Member
That makes sense.
davewhite04
Valued Senior Member
Good point, but no light but still something seeable with a terlescope is the effect of the subatomic particles coming out, they give off a light.
DaveC426913
Valued Senior Member
No.
A black hole is black.
What we see is the accretion disk - light radiating from the extremely hot compressed gas and dust spiraling around and into the BH.
First image of an actual black hole:
davewhite04
Valued Senior Member
Yeah, but you can easily see a light effect from the subatomic particles escaping, What's in black hole is not important.
DaveC426913
Valued Senior Member
It is true that - within the event horizon - light can only fall inward, never outward.
But a black hole is almost always surrounded by infalling matter, and this is very bright - especially in X-rays.
DaveC426913
Valued Senior Member
I don't know what subatomic particles you refer to.
The light comes from normal matter in the BH's accretion disc.
davewhite04
Valued Senior Member
Your question has been answered, believe what you like.
No.
A black hole is black.
What we see is the accretion disk - light radiating from the extremely hot compressed gas and dust spiraling around and into the BH.
First image of an actual black hole:
I wonder what we would see from all directions .
For starters from a perspective 180° from ours .
DaveC426913
Valued Senior Member
No need to wonder.
Any from 180 degrees from us ?
No need to wonder.
No energy flowing in .
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