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   xoxoxoBruce  Saturday Nov 18 01:08 AM

Nov 18th, 2017 : Wrinkle in Space-Time

…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.
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.



Quote:
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?

Quote:
"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."
* This is an illustration because there wasn't any cameras 130 million yeas ago.

...... that we know of.

link

link


sexobon  Saturday Nov 18 07:40 AM

Surf's up, alchemists!



lumberjim  Saturday Nov 18 01:39 PM

So, they're saying that gravity is faster than light, and can prove it?



sexobon  Saturday Nov 18 02:21 PM

From the first link:

Quote:
... At the moment of collision, the bulk of the two neutron stars merged into one ultradense object, emitting a ďfireballĒ of gamma rays. The initial gamma-ray measurements, combined with the gravitational-wave detection, also provide confirmation for Einsteinís general theory of relativity, which predicts that gravitational waves should travel at the speed of light. ...



Happy Monkey  Saturday Nov 18 04:14 PM

I think the gravitational effect begins before the stars actually meet.



xoxoxoBruce  Saturday Nov 18 09:27 PM

That's how I read it, then the impact caused the light (gamma burst).



Glinda  Saturday Nov 18 09:37 PM

Eddies in the space-time continuum.


















Sorry. I tried not to. Really, I did.

I am weak.



lumberjim  Saturday Nov 18 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  Saturday Nov 18 11:32 PM

Quote:
Originally Posted by xoxoxoBruce View Post
Öand that was Pink Floyd with Dark Side of the Moon. Itís 8:41 a.m. EDT Aug. 17th, 2017, now for the traffic report.
Uh Oh, Thereís been a big collision, I hope they get it cleared up by rush hour.
Two Neutron stars collided only 130 million years ago.





Why hasnít NASA come up with an intergalactic Roomba yet?



* This is an illustration because there wasn't any cameras 130 million yeas ago.

...... that we know of.

link

link
Quote:
Originally Posted by Glinda View Post
Eddies in the space-time continuum.


















Sorry. I tried not to. Really, I did.

I am weak.
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  Sunday Nov 19 01:45 AM

Quote:
Originally Posted by lumberjim View Post
'; 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  Sunday Nov 19 01:21 PM

Quote:
Originally Posted by lumberjim View Post
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.)






lumberjim  Tuesday Nov 21 11:28 PM

What a Terrible book



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