gravitational waves

[jungle11 (Greg)]

Hey, cheers for taking the time and effort to work those estimates out WSL

Interesting indeed.

I wonder when astronomers say that neutron stars can exist for trillions of year, if they are taking that effect into account?

[maddownunder]

I don't remember what I was reading or listening to recently, but i like the analogy.
Everyone & everything moves through Spacetime at the speed of Light
A body at rest, moves through the dimension of time at the speed of light.
The faster you accelerate though the space dimension, the slower you move through time. (although the effect is miniscule up to close to the speed of light)
Relativity says Gravity and Acceleration are two sides of the same coin.
Extremely high gravity then becomes the same as very high acceleration.
So on a Nuetron Star or very,very,very close to an Event Horizon, time for that viewer would slow to almost a standstill. Although time for every other viewer on earth would tick by normally.

[WhiteStarLine (Bill)]

Nice NASA symbolic illustration showing how gravitational waves might propagate and how they might be detected. It also shows a newly discovered source. See http://www.skyandtelescope.com/news/38573822.html.

[glenc (Glen)]

http://www.smh.com.au/news/national/...423496711.html
"One of the pulsars spins on its axis every 22 milliseconds or so, while the other takes about 2.7 seconds, and they both emit powerful radio beams. "They're a bit like lighthouses," Professor Bailes said.
In about 85 million years the two pulsars are expected to smash into each other, producing huge gravitational waves."
also: http://www.sciencemag.org/cgi/content/abstract/1167969
and: http://techastronomy.com/article.asp?articleid=44901
and: http://en.wikipedia.org/wiki/PSR_J0737-3039