Gravitational-wave detector LIGO is back and can spot more colliding black holes than ever

The new and improved LIGO detector has already found something interesting. It's too recent to have been mentioned in the article but yesterday my phone gave me an alert that exactly 17.8 seconds after 10:38PM Eastern time LIGO detected something which they preliminarily gave a 72% probability

Gravitational wave detector LIGO is back online!

And now LIGO is much more sensitive so it will be able to detect about 10 times more Black Hole mergers than it was capable of doing back in 2015 when it detected its first Black Hole collision. Gravitational wave detector LIGO is back online <https://www.ourmidland.com/news/article/gravitatio

Re: LIGO news

.01106 <https://arxiv.org/abs/2007.01106?fbclid=IwAR2WAy5nyakMZWnbxhmDqsh_Zehaj3062JwQDE-Vbw8qMp_dwPNiITjH92w> , requires a LIGO or LISA capable of detecting changes in metric with BMS symmetries. I read a report on how LIGO detectors are being deformed slightly in permanent ways

LIGO news

On Wednesday Ligo/Virgo released a more detailed analysis of the first half of its third observational run which went from April 1 2019 to October 1 2019 which added 39 additional gravitational wave events bringing the total number seen up to 50. The list includes the most powerful Black Hole

Re: LIGO detects the largest black hole merger yet

To be honest I have found the preponderance of black holes in the 30 to 60 solar mass range to be odd. It would take a really large star to generate a black hole that massive. These would be red supergiant stars or stars such as the Pistol star. These are one in a many thousands of stars.

LIGO detects the largest black hole merger yet

In today's issue of Physical Review Letters the two Lego detectors in the US and the Virgo detector in Italy announced they had detected on May 21 2019 the gravitational waves from the merger of two Black Holes of 65 and 85 Solar masses which produced a Black Hole of 142 solar masses with 8 solar

Re: LIGO detections that happened yesterday

On Friday, August 30, 2019 at 6:32:45 AM UTC-5, John Clark wrote: > > Puzzling signals seen by LIGO may be gravitational wave split in two > <https://www.newscientist.com/article/2214685-puzzling-signals-seen-by-ligo-may-be-gravitational-wave-split-in-two/> > > John K Clark

Re: LIGO detections that happened yesterday

Puzzling signals seen by LIGO may be gravitational wave split in two <https://www.newscientist.com/article/2214685-puzzling-signals-seen-by-ligo-may-be-gravitational-wave-split-in-two/> John K Clark -- You received this message because you are subscribed to the Google Groups "Ever

Re: LIGO detections that happened yesterday

On Thursday, August 29, 2019 at 5:53:04 AM UTC-5, John Clark wrote: > > Yesterday on August 28 2019 LIGO detected 2 Gravitational wave events just > 21 minutes apart, the first at 6:34:05 UTC and the second at 6:55:09 UTC, > the events were at the same distance, 6.4 billion

LIGO detections that happened yesterday

Yesterday on August 28 2019 LIGO detected 2 Gravitational wave events just 21 minutes apart, the first at 6:34:05 UTC and the second at 6:55:09 UTC, the events were at the same distance, 6.4 billion light years, and they were in the same general part of the sky. The events were seen in all 3

Re: LIGO has ​already found another Gravitational Wave

On Tuesday, April 9, 2019 at 7:33:01 AM UTC-5, John Clark wrote: > > LIGO has only been back on for a few days but already they have detected a > new gravitational wave from a Black Hole merger slightly under 5 billion > light years away. They've decided to stop most of the secrec

LIGO has ​already found another Gravitational Wave

LIGO has only been back on for a few days but already they have detected a new gravitational wave from a Black Hole merger slightly under 5 billion light years away. They've decided to stop most of the secrecy and report things as soon as they find them, so they haven't finished calculating how

As of today LIGO and VIRGO are back online

LIGO and Virgo gravitational wave detectors are back online <https://www.sciencenews.org/article/ligo-and-virgo-gravitational-wave-detectors-are-back> John K Clark -- You received this message because you are subscribed to the Google Groups "Everything List" group. To

Re: LIGO

On Mon, Apr 1, 2019 at 7:01 AM Lawrence Crowell < goldenfieldquaterni...@gmail.com> wrote: *> I am going to think about this. The problem I see is that LIGO detects > information in a gravity wave and converts that into our electronic > information. If this information real

Re: LIGO

I am going to think about this. The problem I see is that LIGO detects information in a gravity wave and converts that into our electronic information. If this information really drops as 1/r then from a Gauss' law perspective it means a gravitational wave propagating from its source produces

Re: LIGO

On Sun, Mar 31, 2019 at 5:06 PM Lawrence Crowell < goldenfieldquaterni...@gmail.com> wrote: >> Yes but LIGO detects the peak to peak displacement of a wave not its >> power or energy as cameras and radios do. And that means LIGO's ability to >> detect wave pro

Re: LIGO

nt is produced. >> > > A radio receiver detects the power in a AC circuit, and that is the Root > Mean Square voltage times the Root Mean Square current. Unlike LIGO > radios don't detect peak to peak values. > > > A gravitational wave is measured according to strain

Re: LIGO

er in a AC circuit, and that is the Root Mean Square voltage times the Root Mean Square current. Unlike LIGO radios don't detect peak to peak values. > A gravitational wave is measured according to strain, but a strain > through distance has an energy content as well. > Yes but LIGO detects th

Re: LIGO

re 2 differences: > > 1) Our ability to detect electromagnetic waves decreases with the square > of the distance, but LIGO's ability to detect gravitational waves only > decreases linearly with distance because unlike film or CCD cameras LIGO > does not detect the energy in the wa

Re: LIGO

ic waves decreases with the square of the distance, but LIGO's ability to detect gravitational waves only decreases linearly with distance because unlike film or CCD cameras LIGO does not detect the energy in the wave it detects the displacement the wave produces. 2) It's easy for telescopes to deter

Re: LIGO

On Friday, March 29, 2019 at 6:36:24 AM UTC-6, John Clark wrote: > > Unless there is some last second glitch the 2 LIGO gravitational wave > detectors in the USA and the Virgo detector in Italy will go back online on > Monday. The 2 LIGO detectors will be about 40% more sensiti

LIGO

Unless there is some last second glitch the 2 LIGO gravitational wave detectors in the USA and the Virgo detector in Italy will go back online on Monday. The 2 LIGO detectors will be about 40% more sensitive now after the upgrade and the slightly smaller Virgo detector about 50% better

Advanced LIGO

LIGO should get back online and start detecting gravitational waves again in about a month after being upgraded, and now they're talking about the upgrades that will come after that. By 2022 they expect to be able to detect one Black Hole merger a month and by 2025 one per hour. The quality

LIGO just announced 4 more Black Hole collisions

https://www.space.com/42618-gravitational-waves-biggest-farthest-black-hole-crash.html https://dcc.ligo.org/public/0156/P1800324/006/O2RandP.pdf John K Clark -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group

LIGO does it again

LIGO announced they've detected ​another Black Hole merger. On June 7 2017 Black Holes of 7 and 12 solar masses collided producing a 18 solar mass Black Hole and a solar mass of energy in the form of Gravitational Waves. It happened a billion years ago and these are the smallest Black Holes

LIGO

Some theories challenge Einstein and say Gravity moves slightly slower than light (or Gamma rays), if the Gamma Ray Flash and the LIGO/VIRGO gravity event observed a few days ago really are correlated then we should be able to measure any potential difference between these 2 speeds with enormous

New LIGO rumor

There is a rumor that LIGO has found another gravitational wave event, but what's new is that this time they've matched it up with something that optical telescopes can see. If true that almost certainly was caused by merging Neutron Stars not merging Black Holes. It all started when astronomer J

LIGO has detected a third Black Hole merger

On January 4 2017 LIGO detected a third Black Hole merger and the most distant one yet, 2.9 billion light years. A 31.2 solar mass Black Hole collided with a 19.4 solar mass Black Hole resulting in a 48.7 solar mass Black Hole with 2 solar masses converted into gravitational wave energy. https

Re: Has LIGO found new physics?

kcl...@gmail.com> To: everything-list <everything-list@googlegroups.com> Sent: Sun, Dec 18, 2016 1:18 pm Subject: Has LIGO found new physics? On December 9 a paper was published hinting that maybe just maybe the LIGO Gravitational Wave detector has found evidence for new physics, the first eve

Has LIGO found new physics?

On December 9 a paper was published hinting that maybe just maybe the LIGO Gravitational Wave detector has found evidence for new physics, the first ever departure from General Relativity: https://arxiv.org/pdf/1612.00266.pdf String theory says, well...,some string theories say, ​ a Black Hole

LIGO

A new analysis in the journal Nature by Krzysztof Belczynski predicts that when LIGO reaches full sensitivity in 3 to 4 years it will see Black Hole mergers in the 20 to 80 solal mass range about once every 9 hours , assuming the Black Holes came from dead stars and not from the first nanosecond

Re: LIGO found a second Black Hole collision!

everything-list <everything-list@googlegroups.com> Sent: Fri, Jun 17, 2016 08:56 PM Subject: Re: LIGO found a second Black Hole collision! There are a few problems though: Keeping the anti-matter isolated from all matter, e.g. in a magnetic bottle. Making the anti-matter; a process whose ER

Re: LIGO found a second Black Hole collision!

time because being smaller the holes generated waves with higher frequencies that LIGO is more sensitive to. And they're looking at at least one other suspected merger but they're only 85% certain it's real and that's not good enough to claim discovery, but there may be others so there ma

Re: LIGO found a second Black Hole collision!

, so unlike the first detection >>>> this time we can say with certainty that at least one of the Black Holes >>>> was spinning. And although weaker the signal lasted longer, almost a full >>>> second versus a fifth of a second the first time

Re: LIGO found a second Black Hole collision!

second versus a fifth of a second the first time because being smaller the holes generated waves with higher frequencies that LIGO is more sensitive to. And they're looking at at least one other suspected merger but they're only 85% certain it's real and that's not good enough to claim dis

Re: LIGO found a second Black Hole collision!

determine the spin, so unlike the first detection this time we can say >> with certainty that at least one of the Black Holes was spinning. And >> although weaker the signal lasted longer, almost a full second versus a >> fifth of a second the first time because being smaller the h

Re: LIGO found a second Black Hole collision!

say with certainty that at least one of the Black Holes was spinning. And although weaker the signal lasted longer, almost a full second versus a fifth of a second the first time because being smaller the holes generated waves with higher frequencies that LIGO is more sensitive to. And they're

LIGO found a second Black Hole collision!

of a second the first time because being smaller the holes generated waves with higher frequencies that LIGO is more sensitive to. And they're looking at at least one other suspected merger but they're only 85% certain it's real and that's not good enough to claim discovery, but there may be others so

Re: Gravitational Waves Detected By LIGO!

Energy, John Mikes, is just a measure of change in a physical system with time. Or change in arrangements of spacetime in the time direction. And what is mass? It's just changes in spacetime in the space direction(s). And it turns out each can be rotated to become the other. What is spacetime?

Re: Gravitational Waves Detected By LIGO!

On Tue, Feb 16, 2016 spudboy100 via Everything List < everything-list@googlegroups.com> wrote: > ​> ​ > When I think of energy, I think of movement, or flow. ​That's one form of energy, and the amount of energy depends on the mass of the moving object and its velocity but it turns out that of

Re: Gravitational Waves Detected By LIGO!

s life can be aggravating, enough. -Original Message- From: John Clark <johnkcl...@gmail.com> To: everything-list <everything-list@googlegroups.com> Sent: Sun, Feb 14, 2016 12:54 pm Subject: Re: Gravitational Waves Detected By LIGO! On Sun, Feb 14, 2016 at 9:34 AM, spudboy1

Re: Gravitational Waves Detected By LIGO!

uot;matter in motion." Anyone have a better definition? "It takes energy.." > > > > > > > > -Original Message- > > From: Terren Suydam <terren.suy...@gmail.com> > > To: everything-list <everything-list@googlegroups.com> > > S

Re: Gravitational Waves Detected By LIGO!

> motion." Anyone have a better definition? "It takes energy.." > > > > -Original Message- > From: Terren Suydam <terren.suy...@gmail.com> > To: everything-list <everything-list@googlegroups.com> > Sent: Sat, Feb 13, 2016 9:47 pm >

Re: Gravitational Waves Detected By LIGO!

It takes energy.." -Original Message- From: Terren Suydam <terren.suy...@gmail.com> To: everything-list <everything-list@googlegroups.com> Sent: Sat, Feb 13, 2016 9:47 pm Subject: Re: Gravitational Waves Detected By LIGO! Great, but what is the specific way in which mass is con

Re: Gravitational Waves Detected By LIGO!

On Sun, Feb 14, 2016 at 9:34 AM, spudboy100 via Everything List < everything-list@googlegroups.com> wrote: ​> ​ > You know, I have never heard a decent definition of what energy is? I > learnt in grade school was that energy was the ability to do work. ​You need energy to do work but you can

Re: Gravitational Waves Detected By LIGO!

On Sat, Feb 13, 2016 at 1:00 AM, Terren Suydam wrote: ​> ​ > Sure, but John said the black holes lost 3 solar masses, which was > converted into gravitational waves... how? Fusion and fission are easy > examples of mass to energy conversion - so what's the specific

Re: Gravitational Waves Detected By LIGO!

Great, but what is the specific way in which mass is converted into the energy required to produce gravitational waves? When planetary orbits decay, kinetic energy is lost... No mass is converted. On Feb 13, 2016 1:20 PM, "John Clark" wrote: > On Sat, Feb 13, 2016 at 1:00

Re: Gravitational Waves Detected By LIGO!

Ahhh, makes sense, you know, in the absurd way that anything in relativity or QM makes sense. One more question. A mass is hurtling through space (not in orbit, to keep things simple). In the mass's frame of reference it has zero kinetic energy. It is at rest. From the perspective of a nearby

Re: Gravitational Waves Detected By LIGO!

On Sat, Feb 13, 2016 at 11:11:05PM -0500, Terren Suydam wrote: > Ahhh, makes sense, you know, in the absurd way that anything in relativity > or QM makes sense. > > One more question. A mass is hurtling through space (not in orbit, to keep > things simple). In the mass's frame of reference it has

Re: Gravitational Waves Detected By LIGO!

Depends on what you mean by "its mass". As used in particle physics, that phrase always refers to the particles rest-mass, which is an invariant (the same in any coordinate frame). But if you think of "its mass" as referring to the strength of the body's gravitational field, then yes its

Re: Gravitational Waves Detected By LIGO!

On Sat, Feb 13, 2016 at 09:47:11PM -0500, Terren Suydam wrote: > Great, but what is the specific way in which mass is converted into the > energy required to produce gravitational waves? When planetary orbits > decay, kinetic energy is lost... No mass is converted. Kinetic energy has mass! When

Re: Gravitational Waves Detected By LIGO!

In relativity mass and energy are interchangeable. For example, most of the mass of a proton is in the kinetic energy of the quarks. When a planetary orbit decays (by radiating gravity waves) kinetic energy is lost and this shows up as less gravitational mass for the sun/planet system. So

Re: Gravitational Waves Detected By LIGO!

a 29 solar mass black hole and producing a 62 solar mass black > hole with the missing 3 solar masses being converted into energy in the > form of gravitational waves, which is what LIGO saw. It all happened in a > fifth of a second. If 3 solar masses had been converted to light instead o

Re: Gravitational Waves Detected By LIGO!

Thanks John, interesting. Does current theory make any predictions on how much energy (electro-magnetic and otherwise) actually is produced during ring-down, despite the inability to observe it due to the event horizon? On Fri, Feb 12, 2016 at 11:37 AM, John Clark wrote: >

Re: Gravitational Waves Detected By LIGO!

On Fri, Feb 12, 2016 at 7:57 AM, Terren Suydam wrote: ​> ​ > I thought the gravitational waves were generated as the black holes > rotated around one another, not (merely) as a consequence of the collision. > Also, what kinds of interactions transfer the energy/mass of

Re: Gravitational Waves Detected By LIGO!

there in the dark. -Original Message- From: Brent Meeker <meeke...@verizon.net> To: everything-list <everything-list@googlegroups.com> Sent: Thu, Feb 11, 2016 11:11 pm Subject: Re: Gravitational Waves Detected By LIGO! The LIGO detects gravitational waves - even from events

Re: Gravitational Waves Detected By LIGO!

On Fri, Feb 12, 2016 at 4:59 PM, Terren Suydam wrote: ​> ​ > If you were in one of the galaxies involved with the colliding black > holes, would you be close enough to the gravitational waves to feel them on > any kind of macroscopic level such as the one we inhabit? >

Re: Gravitational Waves Detected By LIGO!

they were we wouldn't have been able to detect it. What we detected was a 36 solar mass black hole merging with a 29 solar mass black hole and producing a 62 solar mass black hole with the missing 3 solar masses being converted into energy in the form of gravitatio

Re: Gravitational Waves Detected By LIGO!

were not contained within the event horizon, if they were we wouldn't have >> been able to detect it. What we detected was a 36 solar mass black hole >> merging with a 29 solar mass black hole and producing a 62 solar mass black >> hole with the missing 3 solar masses being con

Re: Gravitational Waves Detected By LIGO!

On Fri, Feb 12, 2016 at 12:35 PM, Terren Suydam wrote: ​>​ > Thanks John, interesting. Does current theory make any predictions on how > much energy (electro-magnetic and otherwise) actually is produced during > ring-down, despite the inability to observe it due to the

Re: Gravitational Waves Detected By LIGO!

If you were in one of the galaxies involved with the colliding black holes, would you be close enough to the gravitational waves to feel them on any kind of macroscopic level such as the one we inhabit? On Fri, Feb 12, 2016 at 4:12 PM, John Clark wrote: > > On Fri, Feb 12,

Re: Gravitational Waves Detected By LIGO!

and a quarter billion light years away but LIGO has very poor directional resolution. ​ John K Clark​ -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send

Re: Gravitational Waves Detected By LIGO!

of the steak that attracts attention I reckon. Sent from AOL Mobile Mail -Original Message- From: John Clark <johnkcl...@gmail.com> To: everything-list <everything-list@googlegroups.com> Sent: Fri, Feb 12, 2016 04:19 PM Subject: Re: Gravitational Waves Detected By LIGO! On

Re: Gravitational Waves Detected By LIGO!

ss black hole merging with a 29 solar mass black hole and producing a 62 solar mass black hole with the missing 3 solar masses being converted into energy in the form of gravitational waves, which is what LIGO saw. It all happened in a fifth of a second. If 3 solar masses ha

Gravitational Waves Detected By LIGO!

On Sept. 14 at 4am the LIGO detector in Livingston Louisiana detected a burst of gravitational waves, 7 milliseconds later the LIGO detector in Hanford Washington detected the same thing. The possibility of this being due to chance is vanishingly small. What they detected was 2 black holes

Re: Gravitational Waves Detected By LIGO!

we detected was a 36 solar mass black hole merging with a 29 solar mass black hole and producing a 62 solar mass black hole with the missing 3 solar masses being converted into energy in the form of gravitational waves, which is what LIGO saw. It all happened in a fifth of a second. If 3 sola

Re: Gravitational Waves Detected By LIGO!

possibility that matter/energy can escape due to the high energies involved? On Thu, Feb 11, 2016 at 5:14 PM, Russell Standish <li...@hpcoders.com.au> wrote: > Fantastic news! > > On Thu, Feb 11, 2016 at 11:16:57AM -0500, John Clark wrote: > > On Sept. 14 at 4am the LIGO d

Re: Gravitational Waves Detected By LIGO!

Fantastic news! On Thu, Feb 11, 2016 at 11:16:57AM -0500, John Clark wrote: > On Sept. 14 at 4am the LIGO detector in Livingston Louisiana detected a > burst of gravitational waves, 7 milliseconds later the LIGO detector in > Hanford Washington detected the same thing. The po

Re: Gravitational Waves Detected By LIGO!

Mail -Original Message- From: Russell Standish <li...@hpcoders.com.au> To: everything-list <everything-list@googlegroups.com> Sent: Thu, Feb 11, 2016 05:14 PM Subject: Re: Gravitational Waves Detected By LIGO! Fantastic news! On Thu, Feb 11, 2016 at 11:16:57AM -0500, John

Re: Gravitational Waves Detected By LIGO!

The LIGO detects gravitational waves - even from events that produce no photons. Brent On 2/11/2016 7:28 PM, spudboy100 via Everything List wrote: My thought is I wonder if its possible to create some kind of gravitational wave detector that can view objects that don't produce a lot

LIGO

On Thursday at 10.30 EST (15.30GMT) the Laser Interferometer Gravitation-Wave Observatory will announce if they've found gravitational waves or not after its recent upgrade. Before the upgrade LIGO could detect binary neutron star mergers 50 million light years away, after the upgrade it could

Re: LIGO

gravitational > > waves or not after its recent upgrade. Before the upgrade LIGO could detect > > binary neutron star mergers 50 million light years away, after the > > upgrade it could detect them 650 light years away, a volume over 2000 times > > larger. The physics wor

Re: LIGO

Feb 9, 2016 at 10:57 AM, John Clark <johnkcl...@gmail.com> wrote: > On Thursday at 10.30 EST (15.30GMT) the Laser Interferometer > Gravitation-Wave Observatory will announce if they've found gravitational > waves or not after its recent upgrade. Before the upgrade LIGO could detect &

Re: LIGO

tation-Wave Observatory will announce if they've found gravitational waves or not after its recent upgrade. Before the upgrade LIGO could detect binary neutron star mergers 50 million light years away, after the upgrade it could detect them 650 light years away, a volume over 2000 times larger. The ph