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Gravitational Wave Detectors Upgraded To Hunt For 'Extreme Cosmic Events' (cnet.com)
The Laser Interferometer Gravitational-Wave Observatory (LIGO) facilities, residing in Washington and Louisiana, will be upgraded via grants from the U.S. National Science Foundation, UK Research and Innovation and the Australian Research Council -- providing stronger, more frequent detections and decreasing noise. CNET reports: Over $34 million will be provided for the upgrade which makes LIGO sound like the latest iPhone. When it is complete, LIGO will go from its crusty old 2015 "Advanced LIGO" phase to the "Advanced LIGO Plus" phase. LIGO's twin facilities both contain two 4-kilometer long arms that use lasers to detect minute disturbances caused by extremely energetic cosmic events -- like black holes merging. The incredibly high-powered events are responsible for gravitational waves, rippling out through spacetime the same way water does when you drop a rock in a pond. By the time they reach Earth, the ripples are so small that only incredibly tiny disturbances in LIGO's lasers can detect them.
The proposed upgrades will greatly increase the number of events that LIGO will detect. With only 11 under its belt so far, [David Reitze, executive director of LIGO] even expects we might see "black hole mergers on a daily basis" and describes neutron star mergers becoming "much more frequent." All that extra power adds up, hopefully revealing some of the cosmos' deepest, darkest secrets. In September 2015, LIGO provided the first evidence for a black hole merger -- and in turn, the existence of gravitational waves -- just four days after a three-year long upgrade. Since then, LIGO has seen 10 black hole mergers and a single, huge collision between two incredibly dense stars, known as neutron stars.
The proposed upgrades will greatly increase the number of events that LIGO will detect. With only 11 under its belt so far, [David Reitze, executive director of LIGO] even expects we might see "black hole mergers on a daily basis" and describes neutron star mergers becoming "much more frequent." All that extra power adds up, hopefully revealing some of the cosmos' deepest, darkest secrets. In September 2015, LIGO provided the first evidence for a black hole merger -- and in turn, the existence of gravitational waves -- just four days after a three-year long upgrade. Since then, LIGO has seen 10 black hole mergers and a single, huge collision between two incredibly dense stars, known as neutron stars.
I am also interested in these "extreme cosmic events", but would like to know if there's going to be a cash bar and/or bottle service and any dress code. Last time I went to one of those things I got wasted on K and had the dry mouth and all they had was weird fruit juices and herbal teas.
You are welcome on my lawn.
I find it fascinating that we can view objects exploding and combining billions of miles away because stuff on planet earth changes position.
--
Without music, life would be a mistake. - Friedrich Nietzsche
And direction?
You know... this is just a one pixel device.
I would love to see a video of a 1024x1024x1024 voxel interferometer
Maybe in my lifetime?
Correct. If anything, the evidence of "gravitational waves" is an evidence of a field with a carrier particle, which directly puts a cross on the grave of the "Einstein theory", a hypothesis that even Einstein threw out. The space is not "curved", time is separate, and gravitation is a field like EM. There are no "black holes", and Hawking was just a cripple with a preprogrammed dictionary.
Welcome back, Galilean space!
God made ALL life in the universe.
"You could aswell have "I'm a clueless douche" stamped on your forehead." - Kendall, in their nomenclature.
She's been dead for a few decades... You must be "feeling" the dick of your president in your asshole.
Aw, look at the cute little man who thinks he know shit about shit, but all he actually does it parrot what the internet has told him.
when the next comet splashes into earth, we'll probably notice without the help of a detector.
Slashdot, fix the reply notifications... You won't get away with it...
It is great that LIGO will be upgraded and able to detect more events, but that is all that the article says. Can anyone provide a link to a slightly more technical article which explains how it will be upgraded and why these upgrades will make it more sensitive?
That referred to the name, not the technology. That said, I don't think apple is using that kind of ever extend naming scheme. Some other better fitting comparison could haven been found.
https://www.youtube.com/watch?...
How is the Riemann zeta function like Trump rallies? Both have an endless number of trivial zeros.
Over $34 million will be provided for the upgrade which makes LIGO sound like the latest iPhone.
I know Apple has been putting up their prices but if $34 million sounds like an iPhone upgrade then things have clearly got out of hand.
I'm the new snowflake sensor, you not-that-sensitive clod.
... and daughter colliding at the local supermarket checkout. :-)
Their masses really qualifies this for being an "extreme cosmic event"
It's great that they're going to make the existing facilities more sensitive, but the only we'll be able to pinpoint where these events are coming from is if we get more facilities. Maybe in in the Northeast U.S. or Canada? South America? Africa? Australia? All excellent candidates for helping us pinpoint where these signals originate, allowing us to direct other telescopes (esp. radio, gamma ray, x-ray, and optical) so that we can see light from these events, when possible.
Gravitational waves does not prove a carrier particle. There is no carrier particle for a wave in the sea either.
Now, having particles and fields similiar to EM is a possibility - but certainly not the only one.
There is no carrier particle for a wave in the sea either.
The waves in the sea are a very different (macroscopic and classical) phenomenon from the "gravity waves" discussed above, so you're pushing a very faulty analogy.
Although if you go deep enough, you'll realize that the macroscopic wave is the sum of the interactions of a bunch of electrons in the outer shells of the atoms in the water molecules, and that these electrons interact via carrier particles - the venerable virtual photons.
So, yeah, you're very wrong and on many levels.
Stop wasting time here, go get an education instead.
"LIGO will go from its crusty old 2015 "Advanced LIGO" phase to the "Advanced LIGO Plus" phase."
When will it go to the "Advanced LIGO Double Plus Good" phase?
What a coincidence
34 million dollars is the likely retail price of the next iPhone... Just because iPhone buyers will pay absolutely anything to own the next iPhone... Even IF it has less features than an old Nokia feature phone
Thank you for that. I watched this hour long lecture and I can't deny that it was interesting. However, it was produced two years ago and whilst the speaker discusses possible future upgrades in general terms, he covers those which might be applied over the next 20 years. It is not at all clear which are the ones covered by this new funding.
Creimette is too busy making YouTube videos and studying for the Windows 10 certification after work.
https://www.nature.com/article...
The major technology currently being tuned at advanced LIGO (aLIGO) is "squeezed light" - manipulation of the quantum state of the light, so as to decrease phase uncertainty. Due to the Heisenberg uncertainty principle, this comes at the cost of increased amplitude uncertainty. The phase uncertainty is an important source of noise at high frequencies (which are more interesting), but the amplitude uncertainty manifests as low frequency noise (due to pressure on the mirrors), so this is a reasonable tradeoff.
The next step being developed for future upgrades(termed aLIGO+), is frequency dependent squeezing - the quadrature of the squeezing (i.e. it's direction in the amplitude/phase plane) can be made to rotate over time. This has the extraordinary effect of squeezing so as to reduce amplitude uncertainty at low frequencies, while reducing phase uncertainty at high frequencies (i.e. improving noise at all frequencies)
http://www.apc.univ-paris7.fr/...
"black holes", "gravitational waves", "high powered events".
Terms such as these don't help anyone. For instance, Einstein did away with gravity. There is no gravity. We have warped spacetime.
But then, SpaceTime is a world made up of two abstract concepts. So how can you bend or warp a thought? So more meaningless answers, as if it were something real instead of some placeholder in an equation that people have been arguing over for the last 100 years.
Given that gravity itself is warped "space-time", then what the hell is a gravitational wave? a double warped space-time? What are we to make of black holes when Einstein himself vehemently denied the possibility of their existence in papers written back in 1939, I believe?
It's little wonder we find it so hard to get kids interested in Science, when science is full of meaningless jargon, and sensationalist headlines where every new photo from space seems to be shocking of reveals some yet unknown forces at play. All the while, we tell the kids we know what we're doing, that science is settled, and we're just waiting for the loose ends to be tied up, when to the more discerning among us, the truth seems to be quite different from that being taught as truth in the education systems of this world today.
Get back to empirical science - testable science, and let the mathematicians dream all they like. I'm just waiting for the house of cards to fall. Next, they'll be telling us there's a virtually limitless supply of electricity in space! No, wait, that's already been said. Damn! What could be more sensational than that?
Given we clearly know nothing about gravity, or why mass imparts gravity to matter (or is it the other way around?) then how can we be so sure of what we think we're measuring at the LIGO detectors?
You're not much thinner than they are, and your mom... They use her to calibrate LIGO.
He's not saying what we know is wrong, he's saying that journalists and grade school teachers are misrepresenting what scientists publish when they retweet...
How did you know about President Duterte's wrongdoings?
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