Pith Number

pith:TWFNHI6V

pith:2026:TWFNHI6V4CKWXWSSSSRWRNK7MF

not attested not anchored not stored refs resolved

Mitigating Systematic Errors in Parameter Estimation of Binary Black Hole Mergers in O1-O3 LIGO-Virgo Data

Chris Van Den Broeck, Frank Ohme, Harsh Narola, Max Melching, Sumit Kumar, Tom Dooney

Parametric uncertainty models for waveforms reduce systematic errors in LIGO-Virgo binary black hole parameter estimates and align results across models and data versions.

arxiv:2604.21859 v2 · 2026-04-23 · astro-ph.HE · astro-ph.IM · gr-qc

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Record completeness

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2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

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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

The proposed method effectively reduces systematic errors, even those arising from data artifacts such as glitches occurring near a signal and the deglitching process; inconsistent results from different waveform models become much more consistent, with GW200129_065458 yielding consistent non-zero χ_p values of 0.60^{+0.31}_{-0.33}, 0.58^{+0.30}_{-0.29} and 0.56^{+0.31}_{-0.28} across IMRPhenomXPHM, IMRPhenomXO4a and NRSur7dq4.

C2weakest assumption

That the parametric uncertainty models developed in prior work, when equipped with sufficiently broad priors on phase and amplitude deviations, can absorb the dominant systematic errors present in the selected events without introducing new biases into the astrophysical parameters.

C3one line summary

Reanalysis of flagged LVK events with waveform uncertainty models produces consistent spin and precession inferences across raw/deglitched data and multiple waveform approximants.

References

116 extracted · 116 resolved · 34 Pith anchors

[1] The mismatch study (Figures 2 and 3) indicate that this event shows the minimal intrinsic difference across different waveform models

[2] In GWTC-2.1 analy- sis, the reported values of the effective spin parame- ter areχeff = 0.25+0.10 −0.10 (IMRPhenomXPHM) and 0.14+0.17 −0.07 (SEOBNRv4PHM)

[3] The final mass of the remanent black hole is an intermediate mass black hole (IMBH) [99]

[4] However, this event was affected by a scattered light glitch that occurred very close to the signal in the LIGO Livingston detec- tor

[5] These observations are consistent among baseline runs and RPE parametrization runs. In a previous study [29], the authors noted that the negative effective spin mea- surement is attributed to the segm

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-05-20T00:01:42.038715Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9d8ad3a3d5e0956bda5294a368b55f614f3ed4968060962816c73cd9ff4b134f

Aliases

arxiv: 2604.21859 · arxiv_version: 2604.21859v2 · doi: 10.48550/arxiv.2604.21859 · pith_short_12: TWFNHI6V4CKW · pith_short_16: TWFNHI6V4CKWXWSS · pith_short_8: TWFNHI6V

Agent API

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/TWFNHI6V4CKWXWSSSSRWRNK7MF \
  | 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: 9d8ad3a3d5e0956bda5294a368b55f614f3ed4968060962816c73cd9ff4b134f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4e6b7adfc8f56f9427c1e68a9be2310047b8dc4313a55165ddc383c668fec4b8",
    "cross_cats_sorted": [
      "astro-ph.IM",
      "gr-qc"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2026-04-23T16:52:02Z",
    "title_canon_sha256": "88b73202d9ca381d319a92f427555f12d73c5d7a2b6deae7a0fbe146238bdf5a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.21859",
    "kind": "arxiv",
    "version": 2
  }
}