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LIGO Inspiral Events Confirmation

The LIGO system was designed to detect binary inspiral events.
All the claims should have some form of confirmation. Currently none of them have any form of confirmation.


All the claims should have some form of confirmation. Currently none of them have any form of confirmation.

'
LIGO '[looks] for inspiral signals, which can occur when two compact objects, such as neutron stars or black holes, form binary systems. Over time, the objects spiral in toward one another, producing gravitational radiation.
'
'
LIGO gravitational wave detectors saw a grand total of 11 events that have now been classified as robust gravitational wave detections.
'

As of August 14, 2019 all 33 LIGO events were within 6 days of a celestial event (an earth tide involving the Sun or Moon)

Only the 11 robust events have an identified binary for a gravitational wave detection (GW event). The other 22 were assigned a probability of being a possible binary merger.

Of those 11 GW events, 9 were within 2 days of a celestial event.
All 11 were within 6 days of a celestial event.

Data are from Wikipedia.

The X day is the number of days from that celestial event.
Full Moon, New Moon.


GW150914 _ BH-BH _1 day FM
GW151012 _ BH-BH _ 0 day NM
GW151226 _ BH-BH _1 day FM
GW170104 _ BH-BH _0 day Perihelion
GW170608 _ BH-BH _1 day FM
GW170729 _ BH-BH _6 day NM
GW170809 _ BH-BH _2 day FM
GW170814 _ BH-BH _4 day Perigee
GW170817 _ NS-NS _1 day Perigee
GW170818 _ BH-BH _0 day Perigee
GW170823 _ BH-BH _2 day NM

Details about these celestial events are in separate topic.

The other events are just candidates with possibilities

S190408    likely BH-BH
S190412 _ possible BH-BH  
S190421 _ 96% chance of BH-BH
S190425  _ likely NS-NS
S190426c _ 49% chance of NS-NS; an initial news story called this a BH-NS
S190503bf _ 96% BH-BH, <1% BH-NS
S190510g   _ 58% chance noise, no proposed merger
S190512at _ likely BH-BH
S190513bm _ likely BH-BH 
S190517h _  likely BH-BH, <1% BH-NS
S190519bj _ likely BH-BH
S190521g _ likely BH-BH
S190521r _ likely BH-BH
S190602aq _ likely BH-BH
S190630ag _ likely BH-BH
S190701br _ likely BH-BH
S190706ai _ likely BH-BH
S190707q _ likely BH-BH
S190720a _ likely BH-BH, 1% chance noise
S190727h _ likely BH-BH
S190728q _ likely BH-BH
S190814bv _ likely BH-BH

likely is > 90% chance

GW170817 was claimed a NS-NS merger.

From wikipedia:
'
These [NS-NS] events are believed to create short gamma-ray bursts.
'

The 'historic' GW170817 detection was claimed to validate LIGO, though the gamma ray burst in 2015 was detected 2 years before the GW event in 2017.

There was no acceptable confirmation for GW170817.

Black hole mergers are assumed to leave no trace because the black hole will clear the scene and will be the one remaining object.
This type of inspiral event is impossible to confirm.

When LIGO claims to have detected an event it should provide confirmation of that event.

A simple analogy: I could announce I can detect earthquakes with a new app for a cell phone. I could claim it has successfully detected some number of quakes. Of course this claim needs confirmation by an actual earthquake at the location of the claimed detection.
Otherwise I should be laughed at in derision.

With NO confirmations of the 11, we just accept all events as valid.

This certainty is not justified.


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Added July 2019
Last updated (08/14/2019)

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