Post by: Dream-Runner on 18/10/2017 03:08:08
1. Our 3-D universe is on the surface of a 4-D globe.
2. Gravitational wave travels within the 4-D globe at speed of light.
3. Gamma-ray, as well as other electromagnetic waves, travels along the surface of the 4-D globe.
radius.jpg (28.41 kB . 767x476 - viewed 2236 times)As illustrated above, X is the distance of the cosmic event; R is the radius of our 4-D globe; C is speed of light; ∆t is the time difference between detection of gravitational wave and gamma-ray; H is the Hubble constant (about 72 km/s/Mpc).
X – 2R*sin(X/2R) = (C+H)*∆t
On 8/17/2017, gravitational wave GW170817 was detected. 1.7 seconds later, gamma-ray burst GRB 170817A was detected. The binary stars are 40 Mpc (130 Mly) away.
Put these numbers together, the radius of our 4-D globe is around 1015LY (1 quadrillion light-years).
The estimate could be more accurate with more and more cosmic events being recorded.
Post by: xersanozgen on 18/10/2017 19:36:12
4B'lik dünyanın küreseli yarıçapı yaklaşık 1015LY'dir (1 katrilyon ışıkyılı).
the radius of our 4-D globe is around 1015LY (1 quadrillion light-years).
R = 13.43 G Ly