GW231123$ba binary black hole merger with total mass 190–265 M[symbol sun]
On 2023 November 23, the two LIGO observatories both detected GW231123, a gravitational-wave signal consistent with the merger of two black holes with masses and (90% credible intervals), at a luminosity distance of 0.7-4.1 Gpc, a redshift of , and with a network signal-to-noise ratio of ∼20.7. Both...
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| Main Authors: | , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
2025 November 1
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| In: |
The astrophysical journal. Part 2, Letters
Year: 2025, Volume: 993, Issue: 1, Pages: 1-37 |
| ISSN: | 2041-8213 |
| DOI: | 10.3847/2041-8213/ae0c9c |
| Online Access: | Verlag, kostenfrei, Volltext: https://doi.org/10.3847/2041-8213/ae0c9c
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| Author Notes: | A.G. Abac, M. Mapelli, S. Rinaldi [und 1769 weitere Personen] |
| Summary: | On 2023 November 23, the two LIGO observatories both detected GW231123, a gravitational-wave signal consistent with the merger of two black holes with masses and (90% credible intervals), at a luminosity distance of 0.7-4.1 Gpc, a redshift of , and with a network signal-to-noise ratio of ∼20.7. Both black holes exhibit high spins— and , respectively. A massive black hole remnant is supported by an independent ringdown analysis. Some properties of GW231123 are subject to large systematic uncertainties, as indicated by differences in the inferred parameters between signal models. The primary black hole lies within or above the theorized mass gap where black holes between 60-130 M⊙ should be rare, due to pair-instability mechanisms, while the secondary spans the gap. The observation of GW231123 therefore suggests the formation of black holes from channels beyond standard stellar collapse and that intermediate-mass black holes of mass ∼200 M⊙ form through gravitational-wave-driven mergers. |
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| Item Description: | Veröffentlicht: 27. Oktober 2025 Gesehen am 22.04.2026 Im Titel ist M[symbol sun] als Abkürzung für die astronomische Maßeinheit Sonnenmasse dargestellt |
| Physical Description: | Online Resource |
| ISSN: | 2041-8213 |
| DOI: | 10.3847/2041-8213/ae0c9c |