B How can a black hole absorb matter?

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Black holes can absorb matter despite the complexities of time and space around them, as described by the General Theory of Relativity. Time does not pass in the traditional sense at a black hole's event horizon, but objects can still fall into a black hole in finite time from their own perspective. The event horizon is a dynamic boundary that expands as mass is added, leading to the formation of a larger black hole. Misconceptions arise when using Schwarzschild coordinates, which do not adequately describe the behavior of matter near a black hole. Understanding black hole growth requires alternative models and coordinates that accurately reflect the nature of spacetime.
  • #31
JimWhoKnew said:
I want the correcting arguments to be good and valid.
Another simple correcting argument is here:

PeterDonis said:
False. The proper phrasing in daily language is "the observer never sees light signals from the horizon formation". But it is a simple-minded logical error for that observer to conclude that because he didn't see something, it never happened.
 
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  • #32
Dale said:
Why? The existence of any finite ##\Delta \tau## is sufficient. @Ibix argument doesn’t rely on there being an upper bound.
Following @Ibix's clarification in #28, it seems that I misinterpreted his meaning.
 
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