Null GW Result in SN 2023ixf Rules Out Black Hole Central Engine Above GW170817B Scaling
A multimessenger search of SN 2023ixf yields no gravitational-wave signal, supporting neutron-star rather than black-hole formation for a progenitor below 20 solar masses. The result rests on a null detection scaled against GW170817B and optical mass estimates. Stronger constraints await next-generation detectors and better-timed follow-up.
The arXiv preprint applies a model-independent broadband search to LIGO Hanford-Livingston data around the Type II supernova discovered in M101. No chirp or noise-like signal below 1 kHz was recovered above the stated energy thresholds. Combined with progenitor mass estimates below ~20 M_⊙ from optical photometry and spectroscopy, the null result favors a neutron-star remnant over prompt black-hole collapse.
LIGO-Virgo-KAGRA O5: No GW signal above 10^{-4} M_⊙ c² in the next nearby Type II supernova within 5 Mpc by 2028.
Sources (2)
- [1]Primary Source(https://arxiv.org/abs/2608.27468)
- [2]Supporting Source(https://arxiv.org/abs/2306.16398)