Black Hole Merger GW231123
Kartavya Desk Staff
Source: NDTV
Context: Scientists have detected GW231123, the largest black hole merger ever recorded, using the LIGO-Virgo-KAGRA (LVK) network, revealing black holes 100x and 140x the Sun’s mass—a discovery that challenges existing theories of stellar evolution.
About Black Hole Merger GW231123:
• What Is a Black Hole Merger? A black hole merger is a cosmic event where two black holes orbit each other, gradually spiral inward due to energy loss via gravitational waves, and eventually coalesce into a single, larger black hole. These mergers release immense energy, rippling across spacetime.
• A black hole merger is a cosmic event where two black holes orbit each other, gradually spiral inward due to energy loss via gravitational waves, and eventually coalesce into a single, larger black hole. These mergers release immense energy, rippling across spacetime.
• Name of the Event: GW231123 – Detected during LIGO’s fourth observation run.
• How Did It Occur?
• Two massive black holes (140 and 100 times the Sun’s mass) collided. Their merger created a super black hole about 225 solar masses. It defies the expected “mass gap” (60–130 solar masses) where black holes aren’t supposed to form via normal stellar collapse.
• Two massive black holes (140 and 100 times the Sun’s mass) collided.
• Their merger created a super black hole about 225 solar masses.
• It defies the expected “mass gap” (60–130 solar masses) where black holes aren’t supposed to form via normal stellar collapse.
• Key Features of GW231123:
• Massive Scale: Largest known stellar-mass black hole merger. Spin Limit: One black hole spun near the maximum speed allowed by General Relativity. Deep Space Origin: Likely occurred up to 12 billion light-years away. Challenging Models: Suggests prior mergers or exotic astrophysical origins. Detection Network: Identified by LIGO (US), Virgo (Italy), and KAGRA (Japan) under the LVK collaboration.
• Massive Scale: Largest known stellar-mass black hole merger.
• Spin Limit: One black hole spun near the maximum speed allowed by General Relativity.
• Deep Space Origin: Likely occurred up to 12 billion light-years away.
• Challenging Models: Suggests prior mergers or exotic astrophysical origins.
• Detection Network: Identified by LIGO (US), Virgo (Italy), and KAGRA (Japan) under the LVK collaboration.
• Significant:
• Breaks Mass Barrier: Violates theoretical “mass gap” limit, forcing reassessment of stellar collapse physics and supernova models. New Formation Clues: May indicate second-generation mergers, i.e., black holes formed from prior black hole collisions. High-Spin Puzzle: Spins observed near the relativistic limit, making waveform modelling highly complex. Dark Universe Insights: Offers rare data from deep space unreachable via light-based instruments.
• Breaks Mass Barrier: Violates theoretical “mass gap” limit, forcing reassessment of stellar collapse physics and supernova models.
• New Formation Clues: May indicate second-generation mergers, i.e., black holes formed from prior black hole collisions.
• High-Spin Puzzle: Spins observed near the relativistic limit, making waveform modelling highly complex.
• Dark Universe Insights: Offers rare data from deep space unreachable via light-based instruments.