3 ms·
How would you ever observe black hole to grow/accreate matter then?
by doombolt 8y ago
How would you ever observe black hole to grow/accreate matter then?
- qubex 8y agoInfalling matter or radiation becomes ‘simply’ infinitely red-shifted (on account of the slowed time), and hence undetectable to an external observer — and is hence indistinguishable from the bulk of the prior-existing “black hole proper”.
- mcbits 8y agoConversely, a particle on the surface of an object compressed to near its Schwarzschild radius should experience an extreme blue shift and time contraction. Imagine absorbing in one instant a billion years of microwave background radiation blue shifted to gamma and beyond. How could the near-black-hole hang onto it?
- Already__Taken 8y agoInside of a black hole doesn't hang on to anything. There is simply no longer a direction that points out.
- qubex 8y agoYeah... basically looking backwards from the perspective of an infalling particle one would experience the full blast of the Big Bang as it occurred ‘originally’.
- doombolt 8y agoYes, it is indistinguishable. But it seems that actual black hole is more like a hollow crust in this setting and not a point of mass.
- pitaj 8y agoYou can indirectly measure it's mass, charge, and angular momentum.