I Experimental evidence of the existence of an event horizon

Bosko
Gold Member
Messages
151
Reaction score
49
TL;DR Summary
Is there experimental evidence of the existence of an Event Horizon ?
There is good enough experimental evidence for the existence of a Photon Sphere.
Is there clear unequivocal experimental evidence for the existence of an Event Horizon ?
 
Physics news on Phys.org
"Good enough"? The lIGO data is probably providing the best evidence. It depends on what EH feature you want tested.
 
  • Like
Likes russ_watters
There is no direct evidence of the existence of an event horizon, and there never can be. There is evidence of EM radiation signatures from inside the photon sphere which is consistent with GR. Localising GW emission is a somewhat dubious thing, but the region inside the photon sphere contributes to our models of emission, so they test that region.
 
  • Like
  • Informative
Likes Bosko, timmdeeg and phinds
Thread closed temporarily for Moderation...
 
The OP question has been answered. Thread will remain closed.
 
Thread 'Can this experiment break Lorentz symmetry?'

Thread 'Can this experiment break Lorentz symmetry?'

1. The Big Idea: According to Einstein’s relativity, all motion is relative. You can’t tell if you’re moving at a constant velocity without looking outside. But what if there is a universal “rest frame” (like the old idea of the “ether”)? This experiment tries to find out by looking for tiny, directional differences in how objects move inside a sealed box. 2. How It Works: The Two-Stage Process Imagine a perfectly isolated spacecraft (our lab) moving through space at some unknown speed V...
View full post »

Thread '1-Way Speed of Light'

Does the speed of light change in a gravitational field depending on whether the direction of travel is parallel to the field, or perpendicular to the field? And is it the same in both directions at each orientation? This question could be answered experimentally to some degree of accuracy. Experiment design: Place two identical clocks A and B on the circumference of a wheel at opposite ends of the diameter of length L. The wheel is positioned upright, i.e., perpendicular to the ground...
View full post »

Thread 'How can a black hole absorb matter?'

According to the General Theory of Relativity, time does not pass on a black hole, which means that processes they don't work either. As the object becomes heavier, the speed of matter falling on it for an observer on Earth will first increase, and then slow down, due to the effect of time dilation. And then it will stop altogether. As a result, we will not get a black hole, since the critical mass will not be reached. Although the object will continue to attract matter, it will not be a...
View full post »

Similar threads

B Is crossing a black hole's event horizon possible?
Replies
46
Views
7K
I Falling through the event horizon of an evaporating black hole
2
Replies
51
Views
4K
I Black hole formation and infinite redshift
Replies
8
Views
1K
A Timelike curves on event horizon
Replies
7
Views
2K
B Theories about light and time near a black hole
Replies
20
Views
2K
I Do any real macroscopic black holes have a singularity?
Replies
11
Views
2K
I You can't actually enter a blackhole?
Replies
40
Views
3K
I Black Holes: Event Horizon Causally Disconnected?
Replies
21
Views
3K
B Lowering a rope through the event horizon
Replies
12
Views
1K
B Challenging the notion of "crossing" a black hole's event horizon
Replies
25
Views
2K

Hot Threads

Recent Insights

Back
Top