Gravity Exploration Institute
@gravitycardiff.bsky.social
A research institute in the School of Physics and Astronomy at Cardiff University, focused on detecting gravitational waves and understanding their sources.
“Black holes this massive are forbidden through standard stellar evolution models. One possibility is that the two black holes in this binary formed through earlier mergers of smaller black holes.”
July 14, 2025 at 3:44 PM
“Black holes this massive are forbidden through standard stellar evolution models. One possibility is that the two black holes in this binary formed through earlier mergers of smaller black holes.”
From the article: “This is the most massive black hole binary we’ve observed through gravitational waves, and it presents a real challenge to our understanding of black hole formation,” says Professor Mark Hannam, from Cardiff University and a member of the LIGO Scientific Collaboration.
July 14, 2025 at 3:43 PM
From the article: “This is the most massive black hole binary we’ve observed through gravitational waves, and it presents a real challenge to our understanding of black hole formation,” says Professor Mark Hannam, from Cardiff University and a member of the LIGO Scientific Collaboration.
You can read the paper here: journals.aps.org/prd/abstract...
Or the preprint version here: arxiv.org/abs/2009.14611
Or the preprint version here: arxiv.org/abs/2009.14611
Toward real-time detection of unmodeled gravitational wave transients using convolutional neural networks
Convolutional neural networks (CNNs) have demonstrated potential for the real-time analysis of data from gravitational wave detector networks for the specific case of signals from coalescing compact-o...
journals.aps.org
February 10, 2025 at 2:00 PM
You can read the paper here: journals.aps.org/prd/abstract...
Or the preprint version here: arxiv.org/abs/2009.14611
Or the preprint version here: arxiv.org/abs/2009.14611
Compared to other unmodelled transient searches currently used for the LIGO and Virgo detectors, MLy is not only much faster, it also uses only a fraction of the computing power, making it extremely efficient.
February 10, 2025 at 1:54 PM
Compared to other unmodelled transient searches currently used for the LIGO and Virgo detectors, MLy is not only much faster, it also uses only a fraction of the computing power, making it extremely efficient.
...those from core-collapse supernovae, gamma ray bursts, or unknown sources.
Our new pipeline, MLy (pronounced “Emily”) will be able to detect such unmodelled signals within seconds, which is important for quickly triggering follow up searches in electromagnetic radiation and energetic particles.
Our new pipeline, MLy (pronounced “Emily”) will be able to detect such unmodelled signals within seconds, which is important for quickly triggering follow up searches in electromagnetic radiation and energetic particles.
February 10, 2025 at 1:54 PM
...those from core-collapse supernovae, gamma ray bursts, or unknown sources.
Our new pipeline, MLy (pronounced “Emily”) will be able to detect such unmodelled signals within seconds, which is important for quickly triggering follow up searches in electromagnetic radiation and energetic particles.
Our new pipeline, MLy (pronounced “Emily”) will be able to detect such unmodelled signals within seconds, which is important for quickly triggering follow up searches in electromagnetic radiation and energetic particles.
Although CNNs have previously been used for analysing gravitational waves from sources with modelled signals, such as binary black holes and neutron stars, this is the first time the method has been usefully applied for the real-time detection of unmodelled signals in LIGO-Virgo data, such as...
February 10, 2025 at 1:54 PM
Although CNNs have previously been used for analysing gravitational waves from sources with modelled signals, such as binary black holes and neutron stars, this is the first time the method has been usefully applied for the real-time detection of unmodelled signals in LIGO-Virgo data, such as...
The people who attended those workshops helped shape the field of gravitational physics over the next 50 years and many are still active today.
December 13, 2024 at 5:39 PM
The people who attended those workshops helped shape the field of gravitational physics over the next 50 years and many are still active today.
... physicists and mathematicians could discuss relativity and gravitation. Experts came from around the world to discuss that year's topic, to present their recent work, to learn more about what others were doing in their field, and to spend time together, strengthening their scientific community.
December 13, 2024 at 5:39 PM
... physicists and mathematicians could discuss relativity and gravitation. Experts came from around the world to discuss that year's topic, to present their recent work, to learn more about what others were doing in their field, and to spend time together, strengthening their scientific community.
And for anyone interested in more technical details, here is a recent preprint of a paper about the experiment, with its first results.
Direct Limits on Stochastic Length Fluctuations at Radio Frequencies
The Quantum-Enhanced Space-Time (QUEST) experiment consists of a pair of co-located Power Recycled Michelson Interferometers, each designed to have a broadband, shot-noise limited displacement sensiti...
arxiv.org
November 20, 2024 at 6:12 PM
And for anyone interested in more technical details, here is a recent preprint of a paper about the experiment, with its first results.
You can read more about the QUEST experiment here, with photos of the empty lab in May, just before we began building the experiment.
QUEST for answers to mysteries of universe underway in new Cardiff lab
Wolfson and HEFCW funded facility home to unique instruments for gravitational physics research
www.cardiff.ac.uk
November 20, 2024 at 6:12 PM
You can read more about the QUEST experiment here, with photos of the empty lab in May, just before we began building the experiment.