Culture and Religion
A world view where the guide for society is based on human nature,
not on ancient scriptures. Home or Topic Groups
LIGO Gravitational Wave Candidate Event Database with Earth Tides
An Excel spreadsheet contains all the LIGO gravitational wave candidates
That spreadsheet is available in pdf here in several parts, LIGOpt1 , GraceDBpt2, Legends .
GraceDB is an online Gravitational-Wave Candidate Event Database
Its records begin in 2019.
These candidates are reviewed and some of them are placed in the LIGO list available in Wikipedia.
As of September 26, 2019 here are the coincidences between these candidate events and their associated earth tide events.
There are 36 candidate events in GraceDB for 22 earth tide events.
This topic is a follow up to the topic titled LIGO Event Trigger Timing.
Clearly LIGO filters out GW detections with a lower probability. GraceDB has all GW candidates so that list has more events.
One comparison about this check for 'rubust' detections published in the LIGO list.
In the LIGO list begun in 2015:
<<
There are many coincidences among the 41 LIGO detected events and several earth tide events, as of September 26, 2019.
10 LIGO events were nearly coincident with a new moon (within 2 days).
8 events nearly coincided with a full moon (within 2 days).
2 events nearly coincided with a perigee (within 1 day).
1 event nearly coincided with a perihelion (within 1 day).
2 events nearly coincided with an alignment of the Moon and Jupiter (within 2 days).
Therefore 23 out of 41 were within 2 days of an earth tide event.
7 other events were within 3 days of an earth tide event.
5 other events were within 4 days of an earth tide event.
3 other events were within 5 days of an earth tide event.
3 remaining events were within 6 days of an earth tide event.
All 39 LIGO events were within 6 days of an earth tide event. This is quite the coincidence!
>>
In the GraceDB list (begun in 2019):
All 36 events in GraceDB are within 7 days of an earth tide peak.
The celestial events causing an earth tide in this time period: Full Moon, New Moon, PeriGee, PeriHelion, Moon-Jupiter alignment.
* - is in LIGO list
- is not in LIGO list
NM-19-04-05 --- caused one trigger, after this event
- S190405ar _ same day as NM not in LIGO list
* S190408an _ 3 days after NM
PG-19-04-15 --- caused one trigger, before this event
S19040412m 4 days before PG
MJ-19-04-23_ resulted in 3 triggers, 1 before, 2 after
* S190421ar _ 2 days before MJ
* S190425z _ 2 days after MJ
* S190426c _ 3 days after MJ
NM-19-05-04 _ resulted in 2 triggers, 1 before, 1 after
* S190503bf _ 1 day before NM
- S190510g _ 6 days after NM _ not in LIGO list
FM-19-05-18 _ resulted in 6 triggers, 3 before, 3 after
* S190512at _ 6 days before FM
* S190513bm _ 5 days before FM
* S190517h _ 1 day before FM
- S190518bb _ same day as FM but not in LIGO list
* S190519bj _ 1 day after FM
* S190521g _ 3 days after FM
* S190521r _ 3 days after FM
- S190524q _ 6 days after FM _ not in LIGO list
NM-19-06-03 --- caused one trigger, before this event
* S190602aq _ 1 day before NM
NM-19-07-02 _ solar eclipse _ resulted in 4 triggers, 2 before, 2 after
* S190630ag _ 2 days before NM
* S190701br _ 1 day before NM
* S190706ai _ 4 days after NM
* S190707q _ 5 days after NM
FM-19-07-18 --- caused 2 triggers, 1 before, 1 after
- S190718y _ same day as FM but not in LIGO list
* S190720a _ 2 days after FM
NM-19-07-31 -- caused 2 triggers, both before
* S190727h _ 4 days before NM
* S190728q _ 3 days before NM
FM-19-08-15 -- caused 3 triggers, 1 before, 2 after
- S190808ae _ 7 days before FM _ not in LIGO list
* S190814bv _ 1 day before FM
- S190816i _ 1 day after FM
- S190822c _ 7 days after FM _ not in LIGO list
NM-19-08-30 --- caused 3 triggers, 2 before, 1 after
* S190910d _ 3 days before FM
* S190828j _ 2 days before NM
* S190828l _ 2 days before NM
* S190901ap _ 2 days after NM
FM-19-09-13 -- caused 3 triggers, 2 before, 1 after
- S190908d _ 5 days before FM _ not in LIGO list
* S190910d _ 3 days before FM
* S190910h _ 3 days before FM
* S190915ak _ 2 days after FM
NM-19-09-28 -- caused 2 triggers before
* S190923y _ 5 days before NM
* S190924h _ 4 days before NM
The distribution of days (days=count):
0=2, 1=8, 2=8, 3=7, 4=4, 5=3, 6=2, 7=2
18 of 36 events in GraceDB are within 2 days of an earth tide peak.
All 36 events in GraceDB are within 7 days of an earth tide peak.
Note: the two outliers at 7 days were in one set of 4 events associated with one full moon.
Neither were in the LIGO robust list. Ignoring those 2 leaves all 34 within 6 days.
link to GraceDB
Hit back to go to previous page in history.
Last updated (09/26/2019)
Here is the list of topics in this Cosmology Topic Group , including my research.
Ctrl + for zoom in; Ctrl - for zoom out ; Ctrl 0 for no zoom;
triple-tap for zoom to fit; pinch for zoom change; pinched for no zoom