The intense gravity near the event horizon causes complementary particles to pop into existence spontaneously. As local space-time is continuous through the EV, the same would be happening just inside the EV, only more so as the gravity field and gradient is greater. So near the singularity...
The Hawking radiation comes from a pair of complementary particles, an electron and a positron for example, coming into existence spontaneously near the event horizon as a result of the intense gravitational field. One particle gets captured by the Black Hole while the other escapes, taking a...
In my browsing around various science forums a have come across the comment that the gravity field becomes infinite at the event horizon. I have always thought that this is a misunderstanding, and that it only becomes infinite at the central singularity. Then I found this same statement in...
I don't know how one would determine the spread of dark matter vertical to the plane of the galaxy by observing the movement of stars in the plane of the galaxy. But there is an awful lot of matter that is spread out in a sphere, about 90% according to Cecelia, and this matter would certainly...
Phinds, here is a quote from Wikipedia -
"When mass profiles of galaxies are calculated from the distribution of stars in spirals and mass-to-light ratios in the stellar disks, they do not match with the masses derived from the observed rotation curves and the law of gravity."
Whoever wrote...
I have just been re-reading "Stars in the Making" by Cecelia Payne-Gaposchkin. I first read it in my teens, about 1960. The book is way out of date, and her claims may no longer be correct, but she says that the visible matter in the spiral arms and core of the galaxy accounts for only 1-10% of...
A Quasar's luminosity is believed to be due to particle jets streaming from it, presumably on the direction of its poles. Reading some of Fred Hoyle's theories (and Halton Arp's) on redshifts, I wondered whether the jets could be forming so close to the "surface" of a black hole that...
This idea of progressing through time takes me back a bit.
This idea was pushed to its limits in the books "The Serial Universe" (1934) and "An Experiment With Time" (1927) by J.W.Dunne. He showed that if you are moving through time, then you have a rate of moving, which required a secondary...
Peter, I think Kip Thorne gets this wrong in his book "Black Holes and Time Warps". After his fable about ants pushing balls out of a hole, he concludes that what we see is the Doppler effect for successive photons from a falling body taking longer and longer to escape, and he concludes "that it...
SlowThinker has commented a couple of times that the gravitational acceleration at the horizon is infinite! This is surely incorrect. The escape velocity at that point is c. Approaching the singularity the gravitational force would tend to infinity, but it becomes meaningless at the singularity..