Questions tagged [ligo]

Questions about the Laser Interferometer Gravitational-Wave Observatory (LIGO), a large-scale physics experiment and observatory to detect cosmic gravitational waves.

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15
votes
4answers
3k views

Why are there not yet any instruments dedicated to registering time dilation caused by passing gravitational waves?

Why are there not yet any instruments dedicated to registering time dilation caused by passing gravitational waves? Wouldn't it be interesting to augment LIGO/Virgo capturing of space distortion with ...
-11
votes
2answers
140 views

Is a Hertz ratio to 65M ☉ proof that Betelgeuse had a core collapse in 1491 from a gravitational wave on January 14, 2020? [closed]

By analysis of gravity waves GW150914 to S200114f when compared to a ratio from the Black Hole merger of 65 M ☉ at 260 Hz with Betelgeuse frequency of 64.698303 Hz the gravitational release on January ...
2
votes
1answer
29 views

Was quantum metrology important for gravitational-wave astronomy?

This article from 2010 titled Quantum metrology for gravitational wave astronomy, 6 years before the announcement of the first direct detection of gravitational waves from a binary black hole merger, ...
5
votes
3answers
215 views

How can there only be “11 phonons” in the mirrors of LIGO interferometers?

LIGO is an incredibly sensitive detector of small changes in space due to the passing of gravitational waves and uses some very high-level mathematics and physics and experimental techniques to drive ...
3
votes
1answer
143 views

Which things can LIGO see that LISA can't, and vice-versa?

CNET's Astronomers discover two ferociously fast stars locked in a death spiral quotes Kevin Burdge, lead author on the new paper in Nature General relativistic orbital decay in a seven-minute-...
34
votes
7answers
7k views

What did LIGO Actually See? (Gravitational waves discovery)

I am trying to find an original video/image of what LIGO actually saw, but all I can find is artist renditions of gravitational waves.
6
votes
2answers
513 views

Does LIGO have a blind spot?

If I understand the principle of operation of operation of LIGO, it detects relative distortions of the two perpendicular arms. So if both arms are distorted the same way, nothing would be spotted. ...
5
votes
2answers
363 views

Would LIGO Detect Head-On Collision?

Assume two black holes collide head-on. In other words, they were not orbiting one another before the collision. I know this is unlikely. Further assume that their sizes and distance from Earth are ...
3
votes
2answers
661 views

LIGO gravitational wave chirp signal frequency

This question is about the LIGO gravitational wave signals' frequency. The signals start from about 35 Hz to peak at about 250 Hz, giving evidence of gravitational waves. The question is about the ...
2
votes
5answers
1k views

Gravitational wave detection time difference between LIGO Livingston and LIGO Hanford

Quote from LIGO's news release: By looking at the time of arrival of the signals—the detector in Livingston recorded the event 7 milliseconds before the detector in Hanford—scientists can say that ...
2
votes
1answer
75 views

Can Gravitational astronomy look beyond the CMB?

In another question dealing with the earliest explored phenomenon in the Universe the observing limit of the CMB was mentioned. Prior to CMB the Universe was opaque to photons, I believe. I'm ...