Gravity around a super massive black hole

[don4l]

V41LEY said:

Derek Smith said:

The maths is beyond me, but:

We were discussing spaghettification.

Eek ! I'm lost already
Spaghettification ???

As you approach a black hole things begin to become a bit extreme.

If you were going in feet first, then at some point(actually ... all points) the gravity of the Hole would be greater on your feet than it would be at your head.

As you approach the Black Hole the difference in the gravitational effects on your feet and your head increases. This will make you stretch, a bit like a piece of spaghetti. Your feet will be pulled faster than your head towards the black hole.

[Derek Smith]

Toltec said:

Besides, the radiation will get you first.

Would there be radiation around a black hole that had, say, been catapulted from its galaxy during a collision and is all on its own, away from matter so drawing nothing in? Would not the black hole's gravitation stop any escape of radiation?

[V41LEY]

don4l said:

V41LEY said:

Derek Smith said:

The maths is beyond me, but:

We were discussing spaghettification.

Eek ! I'm lost already
Spaghettification ???

As you approach a black hole things begin to become a bit extreme.

If you were going in feet first, then at some point(actually ... all points) the gravity of the Hole would be greater on your feet than it would be at your head.

As you approach the Black Hole the difference in the gravitational effects on your feet and your head increases. This will make you stretch, a bit like a piece of spaghetti. Your feet will be pulled faster than your head towards the black hole.

Nasty
Knowing much more about Biology than Physics I suggest that it would likely result in your certain death unless you were related to Stretch Armstrong

[IainT]

Derek Smith said:

Toltec said:

Besides, the radiation will get you first.

Would there be radiation around a black hole that had, say, been catapulted from its galaxy during a collision and is all on its own, away from matter so drawing nothing in? Would not the black hole's gravitation stop any escape of radiation?

BHs give off radiation, the lower the mass the higher the rate of emission. I was trying to find out what the radiation is and associated energy levels to see if it could be potentially fatal but my maths/physics isn't strong enough.

[Toltec]

Derek Smith said:

Toltec said:

Besides, the radiation will get you first.

Would there be radiation around a black hole that had, say, been catapulted from its galaxy during a collision and is all on its own, away from matter so drawing nothing in? Would not the black hole's gravitation stop any escape of radiation?

From our perspective it takes an infinitely long time for an object to reach the event horizon, so would this mean if an accretion disk forms then it will always appear to be there? The radiation would be increasingly red shifted as the emitting matter approaches the event horizon so would become less hazardous? However as the doomed astronaut falls the radiation would have less relativistic shift and become shorter wavelength?

I studied Physics, but ended up as an engineer so would tend to go with the desired result is not being dead so do not get close to a black hole. How close is too close though?