New Gravitational Wave signal

[BrianSoddingBoru4]

CERN or LIGO/VIRGO may be the first groups to receive a Nobel Prize.

Erm...a Nobel has been won by groups more than 20 times.

Boru

[chimp3]

CERN or LIGO/VIRGO may be the first groups to receive a Nobel Prize.

Erm...a Nobel has been won by groups more than 20 times.

Boru

I meant Nobel Prize for Science. The groups were all for peace prize.

[BrianSoddingBoru4]

Ah. Gotcher. 

Boru

[popeyespappy]

For the first time, a detection of grav. waves from merging black holes at three simultaneous detectors has been announced today after the italian VIRGO machine had joined the two LIGO detectors in Louisiana and Washington a while ago. The third detector not only improves sensitivity but has allowed a 10x more precise determination of the source region on the sky. This should bolster the team's chances for this year's Nobel which will be announced soon.

According to the Wiki article on atomic clocks, the best of the experimental optical matrix clocks have an accuracy of around 2.1 x 10^-18. That is accuracy to less than a second over the age of the universe. Clocks that accurate could be used to detect gravitational time dilation for an elevation change of only 2 cm. The article says that is "close" to useful for measuring relativistic geodesy.

I believe it is safe for me to assume these gravitational waves we are detecting are producing a time dilation a lot smaller than that. Having said that what kind of accuracy do we need out of clocks to make them useful for using time dilation to detect gravitational waves?

[Brian37]

What did one astrophysicist say to his fellow astrophysicist?

"You do understand the gravity of the situation?"

[Succubus]

For the first time, a detection of grav. waves from merging black holes at three simultaneous detectors has been announced today after the italian VIRGO machine had joined the two LIGO detectors in Louisiana and Washington a while ago. The third detector not only improves sensitivity but has allowed a 10x more precise determination of the source region on the sky. This should bolster the team's chances for this year's Nobel which will be announced soon.

According to the Wiki article on atomic clocks, the best of the experimental optical matrix clocks have an accuracy of around 2.1 x 10^-18. That is accuracy to less than a second over the age of the universe. Clocks that accurate could be used to detect gravitational time dilation for an elevation change of only 2 cm. The article says that is "close" to useful for measuring relativistic geodesy.

I believe it is safe for me to assume these gravitational waves we are detecting are producing a time dilation a lot smaller than that. Having said that what kind of accuracy do we need out of clocks to make them useful for using time dilation to detect gravitational waves?

Thank you for that. I went and did me some net lernin.

Like eLISA, their plan also requires spacecraft flying in formation and communicating using lasers. But instead of relaying information about changes in distance, the lasers will keep track of tiny discrepancies in timekeeping between synchronized atomic clocks installed aboard the spacecraft.

More good stuff here.

Edit

The European Space Agency’s planned eLISAobservatory. Due to launch in 2034, is designed to detect a different kind of wave: millihertz-range, or low-frequency, gravitational waves generated by...

203 fucking 4??? You can not be serious!!!

Horrible website here.

[Minimalist]

That is accuracy to less than a second over the age of the universe.

Creatards think the universe is only 6,000 years old so that really is not all that impressive!

[Anomalocaris]

That is accuracy to less than a second over the age of the universe.

Creatards think the universe is only 6,000 years old so that really is not all that impressive!

Especially next to the creatards clock that loses 13.81 billion years in only 6,000 years.