Pith Number

pith:64SOJL3G

pith:2026:64SOJL3GMP7BWQZZ4ZERYGID7P

not attested not anchored not stored refs resolved

Population Properties of Binary Black Holes with Eccentricity

Muhammad Zeeshan, Natalie Malagon, Richard O'Shaughnessy

The first population analysis of binary black holes including eccentricity finds that such events comprise less than 5 percent of the total.

arxiv:2602.11030 v2 · 2026-02-11 · astro-ph.HE

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The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Claims

C1strongest claim

We perform a very first population analysis that simultaneously fits the mass, spin, redshift, and eccentricity distribution. [...] we bound the branching ratio for eccentric events to be below 0.051890 and 0.022011 at 90% confidence with and without GW200129_065458 respectively.

C2weakest assumption

The SEOBNRv5EHM waveform model accurately captures eccentric binary black hole signals for parameter estimation, and the chosen parametric forms for the eccentricity population distribution are appropriate representations of the underlying population.

C3one line summary

First joint population inference on binary black hole eccentricity from GWTC-4 bounds the eccentric branching ratio below 5% at 90% confidence, with results consistent with quasi-circular models but highly model-dependent.

References

103 extracted · 103 resolved · 30 Pith anchors

[1] See Equation 9, 10 and 11 of [95] for variance of the population likelihood given in Equation (2)

[2] Expected Rate Estimation The expected number of GW detections can be formu- lated as an integral over the intrinsic source-parameter spaceλand redshiftzmodulated by an appropriate se- lection (weighti

[3] GWTC-1: A Gravitational-Wave Transient Catalog of Compact Binary Mergers Observed by LIGO and Virgo during the First and Second Observing Runs 2019 · arXiv:1811.12907

[5] GWTC-2.1: Deep Extended Catalog of Compact Binary Coalescences Observed by LIGO and Virgo During the First Half of the Third Observing Run 2024 · arXiv:2108.01045

[7] GWTC-4.0: Updating the Gravitational-Wave Transient Catalog with Observations from the First Part of the Fourth LIGO-Virgo-KAGRA Observing Run 2025 · arXiv:2508.18082

Formal links

2 machine-checked theorem links

Cited by

3 papers in Pith

A universal framework to identify eccentric binary mergers: GW200105 case study

Assessing the imprint of eccentricity in GW signatures using two independent waveform models

Secondary-Mass Features improve Spectral-Siren $H_0$ Constraints

Receipt and verification

First computed	2026-05-17T23:38:59.979652Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f724e4af6663fe1b4339e6491c1903fbfc9c76cfcfb4b71b5e35a3b9f7a9edce

Aliases

arxiv: 2602.11030 · arxiv_version: 2602.11030v2 · doi: 10.48550/arxiv.2602.11030 · pith_short_12: 64SOJL3GMP7B · pith_short_16: 64SOJL3GMP7BWQZZ · pith_short_8: 64SOJL3G

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/64SOJL3GMP7BWQZZ4ZERYGID7P \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: f724e4af6663fe1b4339e6491c1903fbfc9c76cfcfb4b71b5e35a3b9f7a9edce

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bab9ee06a69d41691c919441287ec13bef066293bf0f563e04a810f5a496535f",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2026-02-11T16:55:29Z",
    "title_canon_sha256": "b3dab2d3f777d504020ad8c97c2a368979a231e3331fb14c24d645cabd062504"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2602.11030",
    "kind": "arxiv",
    "version": 2
  }
}