Nov 18th, 2017 : Wrinkle in Space-Time

xoxoxoBruce • Nov 18, 2017 1:08 am
…and that was Pink Floyd with Dark Side of the Moon. It’s 8:41 a.m. EDT Aug. 17th, 2017, now for the traffic report. :blunt:
Uh Oh, There’s been a big collision, I hope they get it cleared up by rush hour.
Two Neutron stars collided only 130 million years ago.

Image

For the first time, scientists have directly detected gravitational waves — ripples in space-time — in addition to light from the spectacular collision of two neutron stars. This marks the first time that a cosmic event has been viewed in both gravitational waves and light.
The discovery was made using the U.S.-based Laser Interferometer Gravitational-Wave Observatory (LIGO); the Europe-based Virgo detector; and some 70 ground- and space-based observatories.
Neutron stars are the smallest, densest stars known to exist and are formed when massive stars explode in supernovas. As these neutron stars spiraled together, they emitted gravitational waves that were detectable for about 100 seconds; when they collided, a flash of light in the form of gamma rays was emitted and seen on Earth about two seconds after the gravitational waves. In the days and weeks following the smashup, other forms of light, or electromagnetic radiation — including X-ray, ultraviolet, optical, infrared, and radio waves — were detected.


Why hasn’t NASA come up with an intergalactic Roomba yet?

"That debris is strange stuff. It's gold and platinum, but it's mixed in with what you'd call just regular radioactive waste, and there's this big radioactive waste cloud that just starts mushrooming out from the merger site," Kasen says. "It starts out small, about the size of a small city, but it's moving so fast — a few tenths of the speed of light — that after a day it's a cloud the size of the solar system."
According to his estimates, this neutron star collision produced around 200 Earth masses of pure gold, and maybe 500 Earth masses of platinum. "It's a ridiculously huge amount on human scales," Kasen says. He personally has a platinum wedding ring and notes that "it's crazy to think that these things that seem very far out and kind of exotic actually impact the world and us in kind of intimate ways."


[SIZE="6"][COLOR="Red"]*[/COLOR][/SIZE] This is an illustration because there wasn't any cameras 130 million yeas ago.

...... that we know of. :unsure:

link

link
sexobon • Nov 18, 2017 7:40 am
Surf's up, alchemists!
lumberjim • Nov 18, 2017 1:39 pm
So, they're saying that gravity is faster than light, and can prove it?
sexobon • Nov 18, 2017 2:21 pm
From the first link:

... At the moment of collision, the bulk of the two neutron stars merged into one ultradense object, emitting a “fireball” of gamma rays. The initial gamma-ray measurements, combined with the gravitational-wave detection, also provide confirmation for Einstein’s general theory of relativity, which predicts that gravitational waves should travel at the speed of light. ...
Happy Monkey • Nov 18, 2017 4:14 pm
I think the gravitational effect begins before the stars actually meet.
xoxoxoBruce • Nov 18, 2017 9:27 pm
That's how I read it, then the impact caused the light (gamma burst).
Glinda • Nov 18, 2017 9:37 pm
Eddies in the space-time continuum.


















[SIZE="1"]Sorry. I tried not to. Really, I did.

I am weak.[/SIZE]
lumberjim • Nov 18, 2017 11:28 pm
'; when they collided, a flash of light in the form of gamma rays was emitted and seen on Earth about two seconds after the gravitational waves.'

That's what I was referring to. Seemed important.
lumberjim • Nov 18, 2017 11:32 pm
xoxoxoBruce;998836 wrote:
…and that was Pink Floyd with Dark Side of the Moon. It’s 8:41 a.m. EDT Aug. 17th, 2017, now for the traffic report. :blunt:
Uh Oh, There’s been a big collision, I hope they get it cleared up by rush hour.
Two Neutron stars collided only 130 million years ago.

Image



Why hasn’t NASA come up with an intergalactic Roomba yet?



[SIZE="6"][COLOR="Red"]*[/COLOR][/SIZE] This is an illustration because there wasn't any cameras 130 million yeas ago.

...... that we know of. :unsure:

link

link
Glinda;998886 wrote:
Eddies in the space-time continuum.


















[SIZE="1"]Sorry. I tried not to. Really, I did.

I am weak.[/SIZE]
I've just realized that I've never read that book. It's like the movie The Godfather.i know all the references, some how.... But never seen the actual movie.

I'll rectify that at once.
xoxoxoBruce • Nov 19, 2017 1:45 am
lumberjim;998893 wrote:
'; when they collided, a flash of light in the form of gamma rays was emitted and seen on Earth about two seconds after the gravitational waves.'

That's what I was referring to. Seemed important.

The gravitational waves were generated before the collision, they had a head start. Over 130 million years the Gamma rays caught up but the gravitational waves won by a nose.
Glinda • Nov 19, 2017 1:21 pm
lumberjim;998895 wrote:
I've just realized that I've never read that book. It's like the movie The Godfather.i know all the references, some how.... But never seen the actual movie.

I'll rectify that at once.


You definitely should read the books. Clever, silly, and quite entertaining. (IMO, the movie didn't do them justice.)



:thumb:
lumberjim • Nov 21, 2017 11:28 pm
What a Terrible book