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Black-holes
New post in Black-holes
Schwarzschild coordinates beyond the event horizon
May 30th, 2020
black-holes
metric-tensor
coordinate-systems
singularities
Why do black holes warp spacetime so much more than stars that have the same mass?
August 1st, 2022
spacetime
stars
general-relativity
black-holes
Indirectly breaking the speed of light
March 12th, 2021
black-holes
orbital-motion
general-relativity
faster-than-light
event-horizon
What are BMS supertranslation symmetries?
August 1st, 2022
spacetime
symmetry
quantum-gravity
general-relativity
black-holes
How much energy can be extracted by lowering something into a black hole?
May 11th, 2020
general-relativity
black-holes
potential-energy
estimation
How does an object falling into a plain Schwarschild black hole appear from near the black hole?
October 17th, 2020
general-relativity
black-holes
orbital-motion
Collision of a black hole & a white hole
January 29th, 2020
general-relativity
black-holes
collision
white-holes
Does non-mass-energy generate a gravitational field?
August 1st, 2022
general-relativity
black-holes
observers
stress-energy-momentum-tensor
Second Law of Black Hole Thermodynamics
August 5th, 2020
general-relativity
black-holes
black-hole-thermodynamics
AdS Space Boundary and Geodesics
October 30th, 2020
general-relativity
black-holes
differential-geometry
geodesics
anti-de-sitter-spacetime
What if the Chelyabinsk meteor had been a black hole of equivalent mass?
June 26th, 2020
estimation
earth
black-holes
Do only black holes emit gravitational waves?
November 27th, 2020
general-relativity
gravity
black-holes
gravitational-waves
If a magnetic monopole falls into a schwarzchild black hole, what happens to the magnetic field?
August 17th, 2022
electromagnetism
black-holes
general-relativity
What do black holes spin relative to?
September 12th, 2020
kerr-metric
reference-frames
angular-momentum
black-holes
general-relativity
What happens to atoms inside a black hole?
December 12th, 2020
black-holes
condensed-matter
quantum-gravity
neutron-stars
gravitational-collapse
Massless Kerr black hole
November 18th, 2020
black-holes
metric-tensor
kerr-metric
coordinate-systems
general-relativity
Extended object passing near an event horizon
May 3rd, 2020
general-relativity
black-holes
celestial-mechanics
Could Dark Matter form black hole?
June 20th, 2020
black-holes
dark-matter
Where does the kinetic energy of the orbiting black holes go after the merger?
August 13th, 2022
gravitational-waves
general-relativity
energy
black-holes
Why can't dark matter be black holes?
February 18th, 2020
black-holes
dark-matter
Does someone falling into a black hole see the end of the universe?
January 31st, 2022
general-relativity
black-holes
spacetime
observers
event-horizon
Are black holes indistinguishable?
September 30th, 2020
black-holes
identical-particles
Why don't merging black holes disprove the no-hair theorem?
February 11th, 2020
general-relativity
black-holes
collision
event-horizon
no-hair-theorem
Would we even notice the merger with the Andromeda Galaxy?
August 1st, 2022
general-relativity
gravity
black-holes
astrophysics
galaxies
Is there a way to split a black hole?
January 7th, 2021
black-hole-thermodynamics
entropy
black-holes
general-relativity
thermodynamics
Can a black hole form due to Lorentz contraction?
August 1st, 2022
speed-of-light
black-holes
special-relativity
gravity
How close would you have to be to the merger of two black holes, for the effects of gravitational waves to be detected without instruments?
February 15th, 2020
gravitational-waves
black-holes
general-relativity
How can a singularity in a black hole rotate if it's just a point?
December 25th, 2020
singularities
event-horizon
angular-momentum
black-holes
general-relativity
Can a black hole be formed by electromagnetic radiation?
January 28th, 2020
black-holes
electromagnetic-radiation
general-relativity
Do all black holes have a singularity?
January 28th, 2020
singularities
neutron-stars
black-holes
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