A new gravitational wave event reveals a binary black hole merger with total mass 190-265 solar masses, indicating black holes can form via gravitational-wave driven mergers beyond standard stellar channels.
2021 e , title Search for Lensing Signatures in the Gravitational-Wave Observations from the First Half of LIGO Virgo s Third Observing Run , Astrophys
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No definitive lensing is detected in GW231123, though a potential microlensing feature with modulation amplitude up to 0.8 at 95% confidence is noted, limited by large waveform systematics in short signals.
PI-ResNet, a time-domain Siamese 1D ResNet with SE modules, identifies strongly lensed GW candidate pairs from whitened strain data with reported accuracies of 93.8-95.6% on simulated ET noise and 78-84% on LIGO noise.
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GW231123: a Binary Black Hole Merger with Total Mass 190-265 $M_{\odot}$
A new gravitational wave event reveals a binary black hole merger with total mass 190-265 solar masses, indicating black holes can form via gravitational-wave driven mergers beyond standard stellar channels.
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The First Model-Independent Upper Bound on Micro-lensing Signature of the Highest Mass Binary Black Hole Event GW231123
No definitive lensing is detected in GW231123, though a potential microlensing feature with modulation amplitude up to 0.8 at 95% confidence is noted, limited by large waveform systematics in short signals.
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Time-Domain Deep Learning for Pairwise Identification of Strongly Lensed Gravitational-Wave Candidates
PI-ResNet, a time-domain Siamese 1D ResNet with SE modules, identifies strongly lensed GW candidate pairs from whitened strain data with reported accuracies of 93.8-95.6% on simulated ET noise and 78-84% on LIGO noise.