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gravitycardiff.bsky.social
Gravity Exploration Institute
@gravitycardiff.bsky.social
280 followers 72 following 21 posts
A research institute in the School of Physics and Astronomy at Cardiff University, focused on detecting gravitational waves and understanding their sources.
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Reposted by Gravity Exploration Institute
ligo.org
We are pleased to announce our discovery of #GW241011 and #GW241110

Both come from binary black holes where one black hole is much larger than the other. The larger black holes have large spin. Could these black holes have formed in a previous merger?

ligo.org/science-summ...

#O4IsHere 🔭🧪⚛️☄️
Infographic about GW241011 and GW241110 GW241011's source contained black holes about 13 and 8 times the mass of our Sun. The spin of the bigger black hole is high and bear aligned with the orbit. GW241110's source contained black holes about 17 and 8 times the mass of our Sun. The spin of the larger black hole is high and near anti-aligned with the orbit. Credit: Shanika Galaudage/Northwestern University/Adler Planetarium
October 29, 2025 at 1:58 PM
Reposted by Gravity Exploration Institute
ligo.org
A new mini-documentary by our colleagues at @uofgravity.bsky.social celebrating the 10th anniversary of our first detection and the progress in #GravitationalWave astronomy

youtu.be/SqhFtkQ4f2c

#GW10Years 🔭🧪⚛️🎢
University of Glasgow celebrates 10th anniversary of first gravitational wave detection
YouTube video by University of Glasgow
youtu.be
September 13, 2025 at 1:18 PM
Reposted by Gravity Exploration Institute
ligo.org
The latest issue of @ligomagazine.bsky.social is out now and free to read

🎉 Celebrate 10 years of gravitational-wave astronomy with us 🎉

ligo.org/wp-content/u...

🔭🧪⚛️ #GW10Years
Front cover of issue 27 of the LIGO Magazine 10 years of graviational wave astronomy GW150914 to GW231123: a signal that changed to world (p 6) GW231123: the most massive black hole merger yet! (p 24) GWTC-4.0 cataglgue paper (p 20) GW observatories of the future (p 34) Climate change conversations: Fossil-free supercomputing (p 40)
September 13, 2025 at 6:55 PM
gravitycardiff.bsky.social
Today we celebrate the 10th anniversary of the first detection of gravitational waves by @ligo.org 🎉 Research by members of the Gravity Exploration Institute in Cardiff helped lay the foundation for that detection, which opened an exciting new window to the universe. Read more about it here:
A decade of discovery: Academics celebrate 10 years since the first detection of gravitational waves amid announcement of exciting new breakthrough
Scientists celebrate anniversary and tests of Stephen Hawking's black hole area theorem
www.cardiff.ac.uk
September 14, 2025 at 3:37 PM
gravitycardiff.bsky.social
Read more about the new announcement, including a quote from the Gravity Exploration Institute's @markdhannam.bsky.social here:
ligo.org/ligo-virgo-k...
July 14, 2025 at 3:41 PM
Reposted by Gravity Exploration Institute
markdhannam.bsky.social
My summary of the latest @ligo.org observation paper.

Massive black holes!

open.substack.com/pub/fictiona...
GW231123: an unearthly signal
A report on some actual science
open.substack.com
July 14, 2025 at 1:12 PM
gravitycardiff.bsky.social
Several members from Cardiff's Gravity Exploration Institute will be taking part in this special gravitational wave science ceilidh (traditional Scottish dance) in Glasgow this week!
uofglasgow.bsky.social University of Glasgow @uofglasgow.bsky.social · Jul 11
Hundreds of scientists are set to take part in the first performance of a new Scottish country dance inspired by the ripples in spacetime whose existence was first theorised by Albert Einstein.

More: gla.ac/3ICip4Q

#GR24Amaldi16 #GravitationalWaves #Glasgow
@uofgravity.bsky.social
July 13, 2025 at 2:41 PM
gravitycardiff.bsky.social
Prof Stephen Fairhurst of the Gravity Exploration Institute in Cardiff is the new spokesperson for the LIGO Scientific Collaboration! He is the first person from a non-US institution to hold this position. We are very pleased and proud that his many years of work within the LSC have been recognised.
ligo.org LIGO Scientific Collaboration @ligo.org · May 20
We are pleased to introduce our new spokesperson, Prof. Stephen Fairhurst of @gravitycardiff.bsky.social!

"I look forward to working with the excellent scientists and engineers in the collaboration"

ligo.org/lsc-welcomes...
Steve looking happy on an uncharacteristically sunny day in the UK.
May 21, 2025 at 1:45 PM
Reposted by Gravity Exploration Institute
ligo.org
🎉 We have reached 200 #GravitationalWave candidates in O4! 🎉

The fourth observing run (O4) of our detector network has had the best performance so far, with more candidates than ever before! We are currently busy analysing all these wonderful data and look forward to sharing results

#O4IsHere 🔭☄️
March 19, 2025 at 1:34 PM
Reposted by Gravity Exploration Institute
ligo.org
Nine years ago we announced to the world that we have detected #GravitationalWaves we did it!

youtu.be/lslUF9gdYI8
LIGO -- Dave Reitze We have Detected Gravitational Waves
YouTube video by sciencejedi
youtu.be
February 11, 2025 at 4:26 PM
gravitycardiff.bsky.social
A recent paper from the GEI presents the first convolutional neural network (CNN) analysis pipeline for the detection of generic transient gravitational waves signals, with sensitivity across a wide range of signal parameters, used for real-time searches in data from the LIGO and Virgo detectors.
Screenshot of the paper: "Toward real-time detection of unmodeled gravitational wave transients using convolutional neural networks" By Vasileios Skliris, Michael R. K. Norman, and Patrick J. Sutton. Physical Review D 110, 104034 – Published 15 November, 2024. 5 types of gravitational wave signals which were injected into real LIGO-Virgo detector data in order to test the efficiency of the detection algorithm: a high frequency white noise burst (WNB), binary black hole merger (BBH), core-collapse supernova (CCSN), circularly polarized sine-Gaussian (CSG), and a cosmic string cusp (CUSP).
February 10, 2025 at 1:54 PM
Reposted by Gravity Exploration Institute
livingrev-relativ.bsky.social
Living Reviews in Relativity welcomes B. S. Sathyaprakash! Expert from Penn State University and Cardiff University joins as new Associate Editor for Gravitational Waves:
link.springer.com/journal/4111... #LivingRevRelativ #MeetTheEditors
Bangalore Sathyaprakash
January 25, 2025 at 7:28 PM
gravitycardiff.bsky.social
Happy New Year! Blwyddyn Newydd Dda!
January 1, 2025 at 12:49 AM
gravitycardiff.bsky.social
The first Gregynog Relativity Workshop was held at Gregynog Hall in Mid Wales, September 1-3, 1975. The topic was Thermodynamic Properties of Gravitational Fields.

#flashbackfriday

When Bernard Schutz @bschutz.bsky.social moved to Cardiff in 1974, he began to organize workshops where...
A group of mathematicians and physicists standing in front of an old building. Their clothes identify the time as the 1970s.
December 13, 2024 at 5:39 PM
Reposted by Gravity Exploration Institute
arxiv-gr-qc.bsky.social
Abhinav Patra, Lorenzo Aiello, Aldo Ejlli, William L. Griffiths, Alasdair L. James, Nikitha Kuntimaddi, Ohkyung Kwon, Eyal Schwartz, Henning Vahlbruch, Sander M. Vermeulen, Katherine L....
Direct Limits on Stochastic Length Fluctuations at Radio Frequencies
https://arxiv.org/abs/2410.09175
November 22, 2024 at 11:02 PM
gravitycardiff.bsky.social
Photos from our Quantum-Enhanced Space-Time (QUEST) experiment. This experiment searches for stochastic gravitational waves. The photos were taken by PhD student, Abhinav Patra, who has been working on QUEST in one of our laboratories at the Gravity Exploration Institute, Cardiff University.
Bird's-eye view of a part of the experiment. There are two cylinders on a table, with pipes/tubes coming out the side of them, and there are many wires around. At the bottom of the photo are the pink crocs of the scientist taking the photo. A physics laboratory with a lot of instruments on a table and vertical wires hanging everywhere. The instruments include cylinders and lasers.
November 20, 2024 at 6:12 PM
gravitycardiff.bsky.social
A gravitational waves starter pack!
rhiannonsilva.bsky.social Rhiannon Silva @rhiannonsilva.bsky.social · Nov 10
Here's the beginning of starter pack for people and groups working on the theory, detection, or analysis of gravitational waves, or whose work is closely related to the field of gravitational waves. Please let me know who I've missed and I'll add them. go.bsky.app/HrAJX35
November 10, 2024 at 4:59 PM
gravitycardiff.bsky.social
Welcome to our new Bluesky account! Follow us here for updates on our activities and other news related to gravitational waves and their sources.
Our logo: a black background with Gravity Exploration Institute in white text in the top half, a horizontal red line across the middle, and Sefydliad Archwilio Disgyrchiant in white text in the bottom half.
November 10, 2024 at 2:59 PM