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Official Twitter of the LIGO Scientific Collaboration. We detect gravitational waves! Email: questions @ligo .org
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Last Seen Profiles
Pinned Tweet
Everything you need to learn about the
#GWTC3
#GravitationalWave
discoveries
🔖 Paper:
💾 Data release:
💡 Science summary:
🧑🏫Webinar:
#OpenAccess
#OpenData
#OpenScience
7
15
47
#GravitationalWaves
detected from
#BinaryBlackHole
100y after Einstein's prediction.
#EinsteinWasRight
103
3K
3K
We are excited to announce the discovery of
#GW190521
, observed by
@LIGO
and
@ego_virgo
on May 21st 2019: the most massive binary
#BlackHoles
merger detected yet! Read the full story at
23
891
2K
Event observed in
#GravitationalWaves
and all bands of EM: gamma-ray, optical, UV, IR, x-ray, radio
24
1K
2K
Signal in LIGO/Virgo data. Probable candidate two black holes. Observed 3 minutes ago. See more at:
41
484
1K
We are happy to announce the detection of
#GW170608
,
#GravitationalWaves
from a 19-solar-mass binary
#BlackHole
coalescence!
21
664
1K
Three-detector observation of
#GravitationalWaves
from
#blackhole
merger
#GW170814
by
@LIGO
&
@EGO_Virgo
#BravoVirgo
28
893
1K
We are excited to announce the discovery of
#GW190412
, the first binary
#BlackHoles
merger detected by
@LIGO
and
@ego_virgo
with clear evidence for unequal mass components. Read all about it at
#GravitationalWaves
17
437
1K
33
679
1K
"Wake up!"
@NASAFermi
!
@LIGO
and
@ego_virgo
have detected
#GravitationalWaves
to go with your
#GammaRayBurst
16
602
969
@Rainmaker1973
@ProfBrianCox
One of the really cool things about binary black hole is that if two similar mass black holes merge, you always get about the same power: two black holes 5 times the mass of the Sun give the same power as two black holes 5 billion times the mass of the Sun
49
250
944
LIGO, Virgo, and partners make the first detection of
#GravityAndLight
from colliding neutron stars!
28
628
884
The masses of
#GW200105
&
#GW200115
reveal a new type of
#GravitationalWaves
source: our first confirmed detections of
#NeutronStar
#BlackHole
binaries merging! This plot shows the estimated masses of our new sources on the left, in blue and orange
10
263
857
For
#DayOfWomenInScience
, we thank the amazing female scientists who made
#GravitationalWaves
detection possible!
18
606
806
Today
@LIGO
@ego_virgo
&
@KAGRA_PR
have exciting news: the first ever confirmed detections of a
#NeutronStar
#BlackHole
binary merger. Find out more at and read our discovery paper, published today in ApJ letters
13
372
770
It's a race between
#GravityAndLight
!
#GW170817
showed us that
#GravitationalWaves
do indeed move at the speed of light!
18
393
750
A long time ago, in a galaxy far, far away...
The waves came from a collision between two black holes. It took 1.3 billion years for the waves to arrive at the LIGO detector in the USA.
21
1K
1K
12
401
659
Signal in LIGO/Virgo data. Most likely
#gravitationalwaves
from a binary black hole source. Observed 27 minutes ago. Find out more at:
10
188
618
Signal in LIGO/Virgo data. Most likely
#GravitationalWaves
from a binary black hole source. Observed 20 minutes ago. Find out more at:
10
205
570
Happy birthday James Clerk Maxwell, whose discoveries on the nature of electromagnetic waves helped to "light" the way towards Albert Einstein's theories of relativity. 1/2
5
210
554
Time for an
#inspiraltoast
to the detection of
#GW170814
and the future of our
@LIGO
'ego_virgo
#gravitationalwaves
detector network!
5
154
519
Signal in LIGO/Virgo data. Most likely source black hole and neutron star. Observed 6 minutes ago. Find out more at:
8
145
527
As members of the LIGO Scientific Collaboration, we condemn all forms of racism. We stand with our Black members, colleagues, and friends to strive for justice and equality in the face of systemic discrimination, hatred and racism.
#BlackLivesMatter
14
90
516
We think they're pretty attractive 🖤
8
138
496
Signal in LIGO/Virgo data. Most likely
#gravitationalwaves
from a binary black hole source. Observed 17 minutes ago. Find out more at:
13
155
483
We are thrilled to announce the observation of
#GW170104
, a
#GravitationalWaves
signal generated by the merger of two
#BlackHoles
!
6
450
479
A week into the 3rd
@LIGO
@ego_virgo
Observing Run and our first candidate has been posted to GraceDB - the
#GravitationalWave
candidate event database: say hello to S190408an! More info, including a map of its likely sky location, at
#O3ishere
1/2
18
246
487
A very happy 80th birthday from
@LIGO
and
@ego_virgo
to
@NobelPrize
laureate Kip Thorne - one of the three recipients of the 2017 prize for Physics. Many happy returns, Kip!
Happy 80th birthday to Kip Thorne. In the mid-70s, despite widespread scepticism, Thorne was convinced that gravitational waves could be detected.
In 2015, Thorne and
@LIGO
scientists observed gravitational waves for the first time. He received the
#NobelPrize
in Physics 2017.
26
350
2K
8
92
484
Signal in LIGO/Virgo data. This was found by a burst search . Observed 40 minutes ago. Find out more at:
22
148
468
4
305
480
Our
#gravitationalwaves
family of binary
#blackhole
mergers has now grown to 10 !! We love our
@LIGO
@ego_virgo
Orrery, showing hi-res simulations of all 10 detections: amazing work by
@geoffrey4444
and Teresita Ramirez. Full video at
#O2catalog
1/2
7
319
459
What an awesome animation of the
#NeutronStar
collision and
#GammaRayBurst
by our colleagues
@NASAGoddard
!
#GravityandLight
13
296
446
Signal in LIGO/Virgo data. Probable candidate two black holes. Observed 17 minutes ago. See more at:
6
166
450
#GravitationalWaves
from
#BinaryBlackHole
detected on September 14, 2015 @ 9:51AM UTC by
@LIGOWA
&
@LIGOLA
observatories.
6
677
422
Welcome to
#GW190521
, the most massive
#BlackHoles
merger observed yet by
@LIGO
and
@ego_virgo
- and our first clear detection of an Intermediate Mass
#BlackHole
#MostMassiveYet
#imbh
#GravitationalWaves
.
Read lots more at
2
173
434
Happy 8th birthday to the one that started it all:
#GW150914
! After Einstein predicted the existence of
#GravitationalWaves
, it took 100 years to detect the first. Now, in
#O4
, we detect a gravitational-wave event about once every 3 days!
8
140
442
Kip Thorne: "The total power output in
#GravitationalWaves
was 50 times greater than all the stars in the universe combined."
8
499
416
A special week for
#blackholes
rounds off with a 2nd new
@LIGO
@ego_virgo
candidate event,
#S190412m
which looks like a binary black hole merger, hot on the heels of Monday's
#S190408an
and Wednesday's amazing
@ehtelescope
#BlackHolePicture
.
#O3ishere
13
187
424
.
@LIGO
@ego_virgo
and partners make 1st detection of
#GravitationalWaves
and light, from colliding neutron stars
2
408
422
#GW190521
is a special discovery: it's the first clear detection of an "Intermediate Mass Black Hole"
#imbh
– a kind of cosmic “missing link” in the
#BlackHoles
landscape, which may have a key role in how supermassive
#BlackHoles
form
#imbh
3
206
422
Gravitational wave astronomy has revealed a previously unknown population of black hole binaries: two black holes which orbit each other. From our first two observing runs we discovered 10 binary black holes
#BlackHoleWeek
6
155
412
Signal in LIGO/Virgo data. Probable candidate two black holes. Observed 14 minutes ago. See more at:
11
108
394
The sound of two
#BlackHoles
colliding...first released February 11, 2016.
#GW150914
#GravitationalWaves
9
151
399
Signal in LIGO/Virgo data. Most likely
#gravitationalwaves
from a binary neutron star source. Observed 39 minutes ago. Find out more at:
5
130
386
1
366
383
Our new paper describes not one but *two*
#NeutronStar
#BlackHole
binaries we detected in Jan 2020, in the second part of our 3rd Observing Run
#O3b
. Read the science summary at
#NSBH
(multiple translations also available)
5
141
384
The news about
#Arecibo
is so sad. This remarkable telescope holds a special place in the story of our field thanks to Hulse & Taylor's
#NobelPrize
winning work charting the effects of
#GravitationalWaves
emission on binary pulsar PSR B1913+16
#WhatAreciboMeansToMe
10
96
381
Signal in LIGO/Virgo data. Most likely
#gravitationalwaves
from a source with one component in NS-BH mass gap. Observed 24 minutes ago. Find out more at:
15
119
378
Signal in LIGO/Virgo data. Most likely source two neutron stars. Observed 7 minutes ago. Find out more at:
10
114
372
The ratio of the
#GW190412
#blackholes
masses is "roughly equal to the ratio of filling in a regular Oreo to in a Mega Stuf Oreo," notes
@LIGO
&
@NorthwesternU
's
@cplberry
"Investigations of connections between Oreos and black hole formation are ongoing."
13
124
365
@melizeche
@Rainmaker1973
@ProfBrianCox
Therefore, when you divide the energy by the time, the mass cancels out! If you're interested in the details, it's the total mass of the binary that cancels. The ratio of masses does effect the answer
15
17
353
Apr 1 the hunt for
#gravitationalwaves
resumes with even more sensitive detectors! O3, the 3rd
@LIGO
and
@ego_virgo
observing run, promises more merging
#blackholes
and
#neutronstars
- and maybe some exciting new discoveries too. Read more at
#O3ishere
20
107
352
Did anyone else catch Sheldon proudly wearing the first
#GravitationalWave
detected by LIGO (GW150914)?!
@bigbangtheory
2
147
355
The dance of black holes and neutron stars
This Orrery created by
@actualdrdoctor
illustrates the masses of our O3b
#GWTC3
candidates. More massive binaries slowly waltz, while lower mass ones energetically swing
📰:
8
104
357
Signal in LIGO/Virgo data. Most likely binary source with at least one component between 3 & 5 solar masses (mass gap). Observed 22 minutes ago. Find out more at:
7
104
353
This weekend we're celebrating 4 years since the
@LIGO
@EGO_Virgo
detection of
#GW150914
, which marked the dawn of a bright new era of
#GravitationalWaves
astronomy. Check out this
@sciam
article charting how the field has matured since then
#O3ishere
4
109
340
OUr
@LIGO
@ego_virgo
#GWTC2
catalog includes some old favorites, as it extends our previously published
#GWTC1
with
#GravitationalWaves
events from
#O1
and
#O2
, all the way back to
#GW150914
(Look how our graveyard plot has grown since then...)
9
133
348
With a tip of the hat to its genius creator, our
@LIGO
colleague
@actualdrdoctor
, we *love* this meme capturing the essence of today's
#NSBH
discovery announcement.
#NeutronStar
#BlackHole
mergers in liquid form! (Note: other soft drink brands are available...)
4
59
344
We have exciting news! We've just released our new
@LIGO
@ego_virgo
@KAGRA_PR
catalog
#GWTC3
,which includes many more detections from the 2nd part of
#O3
and brings our total number of
#GravitationalWaves
events to 90. Read all about
#GWTC3
at
5
132
343
Signal in LIGO/Virgo data. Most likely source black hole and neutron star. Observed 6 minutes ago. Find out more at:
3
125
337
We are proud to report that the August 2017 discovery of
#GW170817
: colliding neutron stars, observed in
#gravitationalwaves
by
@LIGO
and
@ego
-virgo, has been announced by
@sciencemagazine
as 2017's scientific Breakthrough of the Year!
5
137
330
Signal in LIGO/Virgo data. Most likely source two black holes. Observed 7 minutes ago. Find out more at:
4
87
327
Our new
#S190814bv
event classification (following PE analysis) is even more exciting!! if confirmed as real,
#S190814bv
is most likely a
#NeutronStar
#BlackHole
merger!!! Telescopes around the globe are hunting for any visible counterpart 🔭
#AstronomersAssemble
10
176
328
@melizeche
@Rainmaker1973
@ProfBrianCox
1. All the properties of a black hole scale with its mass: Big black holes are *identical* to small ones except scaled up. They are not like other objects where you could count the number of atoms or LEGO bricks they are made of
4
27
312
The 2017
@NobelPrize
in Physics is awarded to
@LIGO
scientists Rainer Weiss, Barry C. Barish and Kip S. Thorne of
@MIT
and
@Caltech
!
9
171
317
Exactly one year ago
@LIGO
and
@ego_virgo
detected
#gravitationalwaves
from
#GW170814
, the merger of two
#BlackHoles
over a billion light years away.
#GW170814
was the first signal observed by the Advanced Virgo detector, helping to pinpoint its location much more precisely.
6
150
313
For decades, astronomers have puzzled over a “mass gap” that lies between neutron stars and black holes. Now, in
#GW190814
,
@LIGO
and
@EGO_Virgo
have found an object of 2.6 solar masses that’s firmly in the mass gap. Read the full press release at
3
143
319
Today the LIGO-Virgo-KAGRA Collaboration is proud to announce GW230529, the first exceptional
#GravitationalWaves
event from our fourth observing run (
#O4
). You can learn more from
@astronerdika
's excellent infographic, or by visiting our detection page!
5
143
324
The discovery that shook the world - very, very slightly....
3
165
310
Signal in LIGO/Virgo data. Most likely
#GravitationalWaves
from a binary black hole source. Observed 2 hours ago. Find out more at:
1
113
307
Celebrate the latest
@LIGO
discovery with an
#InspiralToast
to the
#blackholes
merger
#GW170104
#GravitationalWaves
#EinsteinWasRight
4
188
298
Our
@LIGO
@ego_virgo
@KAGRA_PR
#AdventCalendar
has reached its final door! Today marks the birthday of Isaac Newton, born 25 December 1642. Many happy revolutions, Isaac! We hope you've enjoyed following our calendar: we'll be back with more doors in 2021
5
56
300
From
@USUAggies
archives:
@NobelPrize
Laureate Kip Thorne's first drawing of
#BlackHoles
orbiting+emitting
#GravitationalWaves
(?), at age 2
10
107
293
Artist's conception of the
#GoldenBinary
which produced
#GravityAndLight
and heavy elements like gold!
7
189
296
The two merging
#BlackHoles
in
#GW190521
“weighed in” at 85 and 66 times the Sun's mass, making
#GW190521
easily the heaviest pair of merging
#BlackHoles
detected so far – even heavier than almost all of the merger *remnants* we’ve seen to date…
5
142
304
#GW190521
, our latest
@LIGO
@ego_virgo
discovery is described in a paper published today in
@PhysRevLett
. Download the paper at , and read our
@LIGO
press release at
#GravitationalWaves
#BlackHoles
#MostMassiveYet
#imbh
3
130
301
'It's mindboggling!': Astronomers detect most powerful black-hole collision yet:
@dcastelvecchi
discusses our discovery of
#GW190521
via
@NatureNews
4
107
299
Since
#GW170817
and
#GRB170817A
arrived at the same time,
#GravitationalWaves
must travel at the speed of light!
#EinsteinWasRight
7
190
280
@melizeche
@Rainmaker1973
@ProfBrianCox
2. Luminosity is energy emitted divided by time over which it is emitted. The energy scales linearly with the mass (think E = mc²), twice the mass, twice the energy. The time is set by the orbital period. This *also* scales linearly with the total mass (think Kepler's law).
4
21
285
Signal in LIGO/Virgo data. Most likely
#GravitationalWaves
from a binary black hole source. Observed 12 minutes ago. Find out more at:
3
81
296
We have discovered the heaviest known neutron star, or maybe the lightest known black hole: “Either way it breaks a record.” The
@nytimes
reports on the LIGO &
@ego_virgo
detection of
#GW190814
5
110
295
@melizeche
@Rainmaker1973
@ProfBrianCox
If you were to see a picture of a black hole without a scale bar, it'd be impossible to tell how big it is. The luminosity during merger is one of their universal properties, the same no matter how you scale the system
5
20
281
Next Monday Oct 16 at 10:00 EDT join
@LIGO
@ego_virgo
scientists for
#GravitationalWaves
update. More news soon at
LIGO-Virgo scientists to discuss new developments in gravitational-wave astronomy -
1
42
64
6
273
286
"The chirp heard across the Universe":
@LIGOWA
and
@LIGOLA
are so pleased and proud to be honored by
@APSphysics
as Historic Physics sites, in recognition of the historic detection of
#gravitationalwaves
by
@LIGO
on Sep 14th 2015.
6
107
279
Day 25 of
#O3
and
@LIGO
and
@ego_virgo
have another candidate
#Gravitational_Waves
event:
#S190425z
at 08:18:26 UTC If the event is confirmed then it's probably a pair of
#NeutronStars
merging! More info at
#O3ishere
1/3
4
170
287
Our new
@LIGO
@ego_virgo
@KAGRA_PR
catalog
#GWTC3
adds even more
#BlackHoles
and
#NeutronStar
#BlackHoles
mergers - as captured by our new "Stellar Graveyard" plot, courtesy of Aaron Geller
@NorthWesternU
. Check it out at
4
115
288
Signal in LIGO/Virgo data. Most likely source black hole and neutron star. Observed 6 minutes ago. Find out more at:
3
113
280
