LIGO

ligo.org

Tuning our detectors using cosmic collisions – LSC – LIGO Scientific Collaboration

A boom in gravitational waves leaves scientists with more questions than answers

A new data release more than doubles the number of gravitational-wave candidate events—and reveals unexpected complexities of merging black holes

LIGO (@LIGO@scicomm.xyz)

Attached: 1 image Our latest discoveries—two of the loudest gravitational-wave signals ever: #GW240925 and #GW250207 Using these signals, and our understanding of binary black holes, we can verify that our detectors are correctly calibrated https://ligo.org/science-summaries/GW240925-GW250207-astro-calibration/ #Astrodon #GravitationalWaves

The universe is humming with ripples in spacetime: Scientists just doubled our catalog of black hole and neutron star collisions

"We are really pushing the edges, and are seeing things that are more massive, spinning faster, and are more astrophysically interesting and unusual."

Observation of Gravitational Waves from a Binary Black Hole Merger

Gravitational waves emitted by the merger of two black holes have been detected, setting the course for a new era of observational astrophysics.

LIGO (@LIGO@scicomm.xyz)

Attached: 1 image Last Sunday was the 10th anniversary of our first #GravitationalWave detection! Join us for a thread of celebratory cakes enjoyed by members of our collaboration First, a cake from OzGrav. Looks like plenty to share? 🖼️: J Powell 🧵🎂 #GW10Years

LIGO-G2600852-v2: GW240925 and GW250207 infographics

arXiv.org

GWTC-4.0: Tests of General Relativity. I. Overview and General Tests

The worldwide LIGO-Virgo-KAGRA network of gravitational-wave (GW) detectors continues to increase in sensitivity, thus increasing the quantity and quality of the detected GW signals from compact binary coalescences. These signals allow us to perform ever-more sensitive tests of general relativity (GR) in the dynamical and strong-field regime of gravity. This paper is the first of three, where we present the results of a suite of tests of GR using the binary signals included in the fourth GW Tran

Indico Global (Indico)

Glorious Women Symposium

The first international online symposium Glorious Women will be held on March 5-6, 2026. “Glorious Women” will celebrate women scientists in the field of gravitational-wave astronomy. The purpose of this symposium is to showcase the accessible, real-world role models, which may inspire young people to consider careers in astronomy and astrophysics. This two-day event will bring together women scientists at different career stages to share their work in gravitational-wave science across...

ligo.org

Professor Emeritus Rainer Weiss, influential physicist who forged new paths to understanding the universe, dies at 92 – LSC – LIGO Scientific Collaboration

IGWN | Observing Plans

arXiv.org

GW241011 and GW241110: Exploring Binary Formation and Fundamental Physics with Asymmetric, High-Spin Black Hole Coalescence

We report the observation of gravitational waves from two binary black hole coalescences during the fourth observing run of the LIGO--Virgo--KAGRA detector network, GW241011 and GW241110. The sources of these two signals are characterized by rapid and precisely measured primary spins, non-negligible spin--orbit misalignment, and unequal mass ratios between their constituent black holes. These properties are characteristic of binaries in which the more massive object was itself formed from a prev

AAS Nova

Not Their First Rodeo: Gravitational Wave Detectors Spot Merging Black Holes That Have Merged Before

The gravitational wave events GW241011 and GW241110 provide strong evidence for the growth of black holes through successive mergers.

doi.org

GW241011_233834 Detail Page

Gravitational Wave Open Science Center

The Conversation

10 years ago, gravitational waves changed astronomy. A new discovery shows there’s more to come

First, gravitational waves proved Einstein correct. Now, they’ve confirmed Stephen Hawking was right about black holes.

arXiv.org

GW240925 and GW250207: Astrophysical Calibration of Gravitational-wave Detectors

GW240925 and GW250207 are two loud gravitational-wave signals from binary black hole coalescences observed with network signal-to-noise ratios $\sim 32$ and $\sim 69$, respectively, by the LIGO Hanford--LIGO Livingston--Virgo network. Gravitational-wave signals from coalescing binaries have characteristic phase and amplitude evolution predicted by general relativity. These signal waveforms, together with measured instrumental calibration uncertainties, are used to infer source parameters. Howeve

IGWN | Observing Plans

GW241011 and GW241110: Exploring Binary Formation and Fundamental Physics with Asymmetric, High-spin Black Hole Coalescences

GW241011 and GW241110: Exploring Binary Formation and Fundamental Physics with Asymmetric, High-spin Black Hole Coalescences, Abac, A. G., Abouelfettouh, I., Acernese, F., Ackley, K., Adamcewicz, C., Adhicary, S., Adhikari, D., Adhikari, N., Adhikari, R. X., Adkins, V. K., Afroz, S., Agapito, A., Agarwal, D., Agathos, M., Aggarwal, N., Aggarwal, S., Aguiar, O. D., Ahrend, I.-L., Aiello, L., Ain, A., Ajith, P., Akutsu, T., Albanesi, S., Ali, W., Al-Kershi, S., Alléné, C., Allocca, A., Al-Shammari

LIGO Legacy: 10 incredible gravitational wave breakthroughs to celebrate observatory's landmark 2015 find

A lot has happened in gravitational-wave astronomy over the past decade.

LIGO (@LIGO@scicomm.xyz)

Attached: 1 image The latest issue of the #LIGOMagazine is out now and free to read 🎉 Celebrate 10 years of gravitational-wave astronomy with us 🎉 https://ligo.org/wp-content/uploads/2025/09/LIGO-magazine-issue27.pdf #GW10Years #Astrodon

arXiv.org

GWTC-4.0: Methods for Identifying and Characterizing Gravitational-wave Transients

The Gravitational-Wave Transient Catalog (GWTC) is a collection of candidate gravitational-wave transient signals identified and characterized by the LIGO-Virgo-KAGRA Collaboration. Producing the contents of the GWTC from detector data requires complex analysis methods. These comprise techniques to model the signal; identify the transients in the data; evaluate the quality of the data and mitigate possible instrumental issues; infer the parameters of each transient; compare the data with the wav

LIGO Legacy: 10 incredible gravitational wave breakthroughs to celebrate observatory's landmark 2015 find

A lot has happened in gravitational-wave astronomy over the past decade.

Celebrating Ten Years

A Big Birthday for a New Astronomy

LIGO (@LIGO@scicomm.xyz)

Attached: 1 image Our next LIGO Virgo KAGRA webinar will introduce the analysis methods used for our #GWTC4 results (paper https://arxiv.org/abs/2508.18081). If you you are curious about the techniques used for our discoveries please join! 19 February at 15:00 UTC, with the recording on YouTube after Register for free https://wisconsin-edu.zoom.us/webinar/register/WN_ey7T8h4hQzyagXE7kqsk2g#/registration To convert UTC to your timezone you can use https://www.timeanddate.com/worldclock/conver

astrobites.org

Spinning into the merging binary black hole family tree

Do black holes have a family tree? Read more in today's bite!

LIGO (@LIGO@scicomm.xyz)

Attached: 1 image Our next LIGO Virgo KAGRA webinar will introduce our latest #GWTC4 detections and discoveries (paper https://arxiv.org/abs/2508.18082) 12 February at 15:00 UTC, with the recording on YouTube after Register for free https://wisconsin-edu.zoom.us/webinar/register/WN_ey7T8h4hQzyagXE7kqsk2g#/registration To convert UTC to your timezone you can use https://www.timeanddate.com/worldclock/converter.html?iso=20211206T150000&p1=137&p2=64&p3=179&p4=213&p5=90&p6=215&p7=111&p8=44&p9=3

LIGO Virgo KAGRA

Welcome to the LIGO-Virgo-KAGRA YouTube Channel! Here we collect and curate videos related to our detectors and their discoveries, our scientists, and all things to do with gravitational waves! If you have questions about gravitational waves or about the LIGO, Virgo and KAGRA detectors, why not visit our websites (you can find us at https://www.ligo.org, https://www.virgo-gw.eu/ and https://gwcenter.icrr.u-tokyo.ac.jp/en/) or you can reach out to us on Twitter: @ligo, @ego_virgo, @kagra_pr)