List of gravitational wave observations
List of gravitational wave events

List of gravitational wave observations

Section Title: List of gravitational wave events
Table Section Text: None

GW event	Detection time (UTC)	Date published	Location area (deg2)	Luminosity distance (Mpc)	Energy radiated (c2M☉)	Chirp mass (M☉)	Effective spin	Primary	Secondary	Remnant	Notes	Ref

Type	Mass (M☉)	Type	Mass (M☉)	Type	Mass (M☉)	Spin

GW150914	2015-09-14 09:50:45	2016-02-11	179; mostly to the south	430+150 −170	3.1+0.4 −0.4	28.6+1.6 −1.5	−0.01+0.12 −0.13	BH	35.6+4.8 −3.0	BH	30.6+3.0 −4.4	BH	63.1+3.3 −3.0	0.69+0.05 −0.04	First GW detection; first BH merger observed

GW151012 [fr]	2015-10-12 09∶54:43	2016-06-15	1555	1060+540 −480	1.5+0.5 −0.5	15.2+2.0 −1.1	0.04+0.28 −0.19	BH	23.3+14.0 −5.5	BH	13.6+4.1 −4.8	BH	35.7+9.9 −3.8	0.67+0.13 −0.11	Formerly candidate LVT151012; accepted as astrophysical since February 2019

GW151226	2015-12-26 03:38:53	2016-06-15	1033	440+180 −190	1.0+0.1 −0.2	8.9+0.3 −0.3	0.18+0.20 −0.12	BH	13.7+8.8 −3.2	BH	7.7+2.2 −2.6	BH	20.5+6.4 −1.5	0.74+0.07 −0.05

GW170104	2017-01-04 10∶11:58	2017-06-01	924	960+430 −410	2.2+0.5 −0.5	21.5+2.1 −1.7	−0.04+0.17 −0.20	BH	31.0+7.2 −5.6	BH	20.1+4.9 −4.5	BH	49.1+5.2 −3.5	0.66+0.08 −0.10

GW170608	2017-06-08 02:01:16	2017-11-16	396; to the north	320+120 −110	0.9+0.0 −0.1	7.9+0.2 −0.2	0.03+0.19 −0.07	BH	10.9+5.3 −1.7	BH	7.6+1.3 −2.1	BH	17.8+3.2 −0.7	0.69+0.04 −0.04	Smallest BH progenitor masses to date

GW170729	2017-07-29 18:56:29	2018-11-30	1033	2750+1350 −1320	4.8+1.7 −1.7	35.7+6.5 −4.7	0.36+0.21 −0.25	BH	50.6+16.6 −10.2	BH	34.3+9.1 −10.1	BH	80.3+14.6 −10.2	0.81+0.07 −0.13	Largest progenitor masses, greatest spin and farthest event to date

GW170809	2017-08-09 08:28:21	2018-11-30	340; towards Cetus	990+320 −380	2.7+0.6 −0.6	25.0+2.1 −1.6	0.07+0.16 −0.16	BH	35.2+8.3 −6.0	BH	23.8+5.2 −5.1	BH	56.4+5.2 −3.7	0.70+0.08 −0.09

GW170814	2017-08-14 10∶30:43	2017-09-27	87; towards Eridanus	580+160 −210	2.7+0.4 −0.3	24.2+1.4 −1.1	0.07+0.12 −0.11	BH	30.7+5.7 −3.0	BH	25.3+2.9 −4.1	BH	53.4+3.2 −2.4	0.72+0.07 −0.05	First announced detection by three observatories; first polarization measurement

GW170817	2017-08-17 12∶41:04	2017-10-16	16; NGC 4993	40+10 −10	≥ 0.04	1.186+0.001 −0.001	0.00+0.02 −0.01	NS	1.46+0.12 −0.10	NS	1.27+0.09 −0.09	NS	≤ 2.8	≤ 0.89	First NS merger observed in GW; first detection of EM counterpart (GRB 170817A; AT 2017gfo); nearest event to date

GW170818	2017-08-18 02:25:09	2018-11-30	39; towards Pegasus	1020+430 −360	2.7+0.5 −0.5	26.7+2.1 −1.7	−0.09+0.18 −0.21	BH	35.5+7.5 −4.7	BH	26.8+4.3 −5.2	BH	59.8+4.8 −3.8	0.67+0.07 −0.08

GW170823	2017-08-23 13:13:58	2018-11-30	1651	1850+840 −840	3.3+0.9 −0.8	29.3+4.2 −3.2	0.08+0.20 −0.22	BH	39.6+10.0 −6.6	BH	29.4+6.3 −7.1	BH	65.6+9.4 −6.6	0.71+0.08 −0.10

S190408an	2019-04-08 18:18:02	2019-04-08	387; towards Pegasus or Lacerta	1473+358 −358	?	?	?	BH	>5	BH	>5	BH	>5	?	Preliminary report

S190412m	2019-04-12 05:30:44	2019-04-12	156; towards Virgo or Boötes	812+194 −194	?	?	?	BH	>5	BH	>5	BH	>5	?	Preliminary report

S190425z	2019-04-25 08:18:05	2019-04-25	7461	155±45	?	?	?	NS	<2.16	NS	<2.16	?	<4.32	?	Preliminary report. False alarm rate: 1 in 70,000 years.

S190426c	2019-04-26 15:21:55	2019-04-26	1131	377±100	?	?	?	?	?	?	?	?	?	?	Preliminary report. 49% of being a massive binary neutron star, 24% chance of being in the neutron star-black hole mass gap, 14% chance of being terrestrial.

Sentence(s)

On 15 June 2016, GW151226 was the third gravitational wave signal detected.

final_sentence: On 15 June 2016, GW151226 was the third gravitational wave signal detected.