#S251112cm
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cplberry.bsky.social
Latest false alarm rate for #S251112cm with an updated background model of about 1 in 4 yr, so slightly less significant

GCN gcn.nasa.gov/circulars/42...
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[🧪🔭⚛️]
GCN - Circulars - 42690 - LIGO/Virgo/KAGRA S251112cm: Updated Sky localization and false alarm rate estimate
gcn.nasa.gov
November 15, 2025 at 11:17 AM
cplberry.bsky.social
Oo! Interesting #GravitationalWave candidate #S251112cm potentially from a *subsolar* mass source

If real, the source is probably has chirp mass ~0.1–0.87 solar masses

False alarm rate 1 in 6.2 yr
GraceDB gracedb.ligo.org/superevents/...
GCN gcn.nasa.gov/circulars/42...
Rating 📏🍬

[🧪🔭⚛️]
Initial sky localization. 90% area 1,200 sq deg. Initial three-dimensional volume localization. Distance around 96 Mpc.
November 12, 2025 at 6:29 PM
cplberry.bsky.social
A couple of really nice stories about the intriguing subsolar mass candidate #S251112cm

www.science.org/content/arti... by Adrian Cho

www.iflscience.com/candidate-gr... by @drcarpineti.bsky.social

A groundbreaking discovery, or just a false alarm? Time (and more analysis) may tell

🔭🧪☄️⚛️
Curious gravitational wave may be hint at primordial black holes—or just noise
Astronomers approach unusual observation with caution and excitement
www.science.org
November 19, 2025 at 6:58 PM
ligo.org
Our recent low-significance candidate #S251112cm has caught some interest. A false alarm or a big discovery—we will keep investigating. Catch up in these two articles

www.science.org/content/arti... by Adrian Cho

www.iflscience.com/candidate-gr... by @drcarpineti.bsky.social

🔭🧪☄️⚛️
www.science.org
November 22, 2025 at 3:45 PM
marcocasolino.bsky.social
youtube.com/live/_I1cqcz...

Scoperto un buco nero primordiale? L’onda gravitazionale S251112cm ha una massa sub-solare!

un candidato di evento di onda gravitazionale suggerisce un evento con un oggetto compatto di massa inferiore a quella del sole

10:00 oggi (live)
Scoperto un buco nero primordiale? L’onda gravitazionale S251112cm ha una massa sub-solare!
YouTube video by Marco Casolino
youtube.com
May 10, 2026 at 6:34 AM
metinnnk.bsky.social
Astrofizikçiler, ilkel kara deliklerin varlığını kanıtlamaya çok yakın
Joseph Shavit

www.yahoo.com/news/article...
Astrophysicists are close to proving the existence of primordial black holes
On November 12, 2025, a ripple passed through the fabric of spacetime and triggered alarms at three gravitational-wave observatories across two continents. The signal, catalogued as S251112cm, was unu...
www.yahoo.com
March 31, 2026 at 1:08 PM
1ban-news.bsky.social
A subsolar-mass LIGO signal may be the first evidence of primordial black holes as dark matter. Science just rewrote the textbook. 🔬

#1ban #ligo #subsolar #science

https://1ban.news/ligo-subsolar-primordial-black-holes-dark-matter/
A subsolar-mass LIGO signal may be the first evidence of primordial black holes as dark matter - 1ban.news
On November 12, 2025, the LIGO-Virgo-KAGRA gravitational wave observatories detected a signal unlike any they had seen before. Designated S251112cm, the merger had a chirp mass between 0.1 and 0.87 solar masses, far too light to be a pair of ordinary stellar-mass black holes, and with only an 8 percent probability of involving a neutron
1ban.news
July 4, 2026 at 7:17 AM
astroarxiv.bsky.social
WFST Follow-up of S251112cm: Searching for an Optical Counterpart to a Subsolar-mass Compact-binary Merger Candidate. Zhengyan Liu et. al. https://arxiv.org/abs/2609.18523
Figure 1 Figure 2 Figure 3 Figure 4
September 18, 2026 at 3:54 AM
krxiv-astro-ph.bsky.social
WFST Follow-up of S251112cm: Searching for an Optical Counterpart to a Subsolar-mass Compact-binary Merger Candidate
https://arxiv.org/pdf/2609.18523
Zhengyan Liu et al.
https://arxiv.org/abs/2609.18523
arXiv abstract link
arxiv.org
September 17, 2026 at 9:31 AM
astrophhe-bot.bsky.social
Zhengyan Liu, et al.: WFST Follow-up of S251112cm: Searching for an Optical Counterpart to a Subsolar-mass Compact-binary Merger Candidate https://arxiv.org/abs/2609.18523 https://arxiv.org/pdf/2609.18523 https://arxiv.org/html/2609.18523
September 17, 2026 at 6:51 AM
krxiv-astro-ph.bsky.social
A Two-month, Galaxy-targeted NIR Follow-up of the Sub-solar-mass Gravitational Wave Candidate S251112cm: Probing Electromagnetic Counterpart Scenarios
https://arxiv.org/pdf/2608.22775
Gregory S. H. Paek, Felipe Olivares E., Willem B. Hoogendam.
https://arxiv.org/abs/2608.22775
arXiv abstract link
arxiv.org
August 25, 2026 at 1:47 PM
astroarxiv.bsky.social
A Two-month, Galaxy-targeted NIR Follow-up of the Sub-solar-mass Gravitational Wave Candidate S251112cm: Probing Electromagnetic Counterpart Scenarios. Gregory S. H. Paek et. al. https://arxiv.org/abs/2608.22775
Figure 1 Figure 2 Figure 3 Figure 4
August 25, 2026 at 9:17 AM
astrophhe-bot.bsky.social
Gregory S. H. Paek, Felipe Olivares E., Willem B. Hoogendam: A Two-month, Galaxy-targeted NIR Follow-up of the Sub-solar-mass Gravitational Wave Candidate S251112cm: Probing Electromagnetic C... https://arxiv.org/abs/2608.22775 https://arxiv.org/pdf/2608.22775 https://arxiv.org/html/2608.22775
August 25, 2026 at 6:51 AM
krxiv-astro-ph.bsky.social
A Two-month, Galaxy-targeted NIR Follow-up of the Sub-solar-mass Gravitational Wave Candidate S251112cm: Probing Electromagnetic Counterpart Scenarios
https://arxiv.org/pdf/2608.22775
Gregory S. H. Paek, Felipe Olivares E., Willem B. Hoogendam.
https://arxiv.org/abs/2608.22775
arXiv abstract link
arxiv.org
August 25, 2026 at 4:06 AM
rasjournals.bsky.social
Adam J Smith, also speaking at NAM26 in the same session, on "The Sub-Solar Mass Gravitational Wave Merger S251112cm: Very Deep Optical Coverage of the Full Localisation Region with Pan-STARRS, ATLAS, and the Rubin Observatory", is also a co-author on this paper academic.oup.com/mnras/advanc...
Can tidal disruption event models reliably measure black hole masses?
Abstract. Tidal disruption event (TDE) light curves are increasingly used to infer the masses of quiescent supermassive black holes (MBH), offering a power
academic.oup.com
July 20, 2026 at 9:11 AM
krxiv-astro-ph.bsky.social
Electromagnetic Follow-up of the Sub-Solar Mass Gravitational Wave Candidate S251112cm: Kilonova Constraints and a Coincident IIb Supernova
https://arxiv.org/pdf/2605.10940
Xander J. Hall et al.
https://arxiv.org/abs/2605.10940
arXiv abstract link
arxiv.org
May 12, 2026 at 4:46 AM
krxiv-astro-ph.bsky.social
Primordial Black Hole interpretation of the sub-solar merger event S251112cm
https://arxiv.org/pdf/2603.25795
Md Riajul Haque, Fabio Iocco, Luca Visinelli.
https://arxiv.org/abs/2603.25795
arXiv abstract link
arxiv.org
March 30, 2026 at 6:29 AM
krxiv-astro-ph.bsky.social
Search For a Counterpart to the Subsolar Mass Gravitational Wave Candidate S251112cm
https://arxiv.org/pdf/2603.17009
Nicholas Vieira et al.
https://arxiv.org/abs/2603.17009
arXiv abstract link
arxiv.org
March 19, 2026 at 4:34 AM
komaningen-cat.bsky.social
重力波が示した「暗黒物質の痕跡」は本物か：科学界が慎重でいる理由 calmist.tokyo/2026/06/16/%...
重力波が示した「暗黒物質の痕跡」は本物か：科学界が慎重でいる理由
2025年11月12日に報告された重力波候補「S251112cm」は、暗黒物質の正体に迫るかもしれない出来事として注目されている。ただし、現時点で言えるのは「興味深い候補が出た」という段階までだ。科学界が慎重なのは、重力波の波形だけで暗黒物...
calmist.tokyo
June 15, 2026 at 10:22 PM
newsarea.bsky.social
Single LIGO Signal Boosts Case That Primordial Black Holes Are Dark Matter

Primordial black holes may account for a significant fraction of dark matter, according to a peer-reviewed study in The Astrophysical Journal examining the anomalous LIGO gravitational wave signal S251112cm — a…
Single LIGO Signal Boosts Case That Primordial Black Holes Are Dark Matter
Primordial black holes may account for a significant fraction of dark matter, according to a peer-reviewed study in The Astrophysical Journal examining the anomalous LIGO gravitational wave signal S251112cm — a subsolar-mass event that no known stellar physics can explain, and the strongest theoretical case yet for primordial black holes as a dark matter candidate.
news-area.com
July 6, 2026 at 5:59 AM
shinycrab.bsky.social
Vera Rubin Observatory has started operations and is undergoing a target of opportunity campaign to follow up on an unusual report from LIGO

gcn.nasa.gov/circulars/42...

@startswithabang.bsky.social
GCN - Circulars - 42707 - LIGO/Virgo/KAGRA S251112cm: Observations with the NSF-DOE Vera C. Rubin Observatory
gcn.nasa.gov
November 17, 2025 at 7:57 AM
astrophco-bot.bsky.social
Md Riajul Haque, Fabio Iocco, Luca Visinelli: Primordial Black Hole interpretation of the sub-solar merger event S251112cm https://arxiv.org/abs/2603.25795 https://arxiv.org/pdf/2603.25795 https://arxiv.org/html/2603.25795
March 30, 2026 at 6:41 AM
astrophhe-bot.bsky.social
Xander J. Hall, et al.: Electromagnetic Follow-up of the Sub-Solar Mass Gravitational Wave Candidate S251112cm: Kilonova Constraints and a Coincident IIb Supernova https://arxiv.org/abs/2605.10940 https://arxiv.org/pdf/2605.10940 https://arxiv.org/html/2605.10940
May 12, 2026 at 6:51 AM
astrophhe-bot.bsky.social
Nicholas Vieira, et al.: Search For a Counterpart to the Subsolar Mass Gravitational Wave Candidate S251112cm https://arxiv.org/abs/2603.17009 https://arxiv.org/pdf/2603.17009 https://arxiv.org/html/2603.17009
March 19, 2026 at 6:42 AM