Pith Number

pith:NEYNERQR

pith:2025:NEYNERQRQ4EMHGC4LMPDLBFKRJ

not attested not anchored not stored refs pending

Assessment of normalizing flows for parameter estimation on time-frequency representations of gravitational-wave data

Daniel Lanchares, Joaqu\'in Gonz\'alez-Nuevo, Jos\'e A. Font, Luigi Toffolatti, Lysiane Mornas, Osvaldo G. Freitas, Pietro Vischia

A normalizing flow model on RGB images of BBH spectrograms recovers LVK parameter estimates for most quantities.

arxiv:2505.08089 v3 · 2025-05-12 · gr-qc · astro-ph.IM

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\usepackage{pith}
\pithnumber{NEYNERQRQ4EMHGC4LMPDLBFKRJ}

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Record completeness

1 Bitcoin timestamp

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

Our model yields good agreement with the LVK results over most parameters.

C2weakest assumption

The conversion of BBH spectrograms into RGB images, combined with training exclusively on IMRPhenomXPHM simulations, is sufficient to recover accurate posteriors on real detector data without explicit noise conditioning.

C3one line summary

GP15 maps BBH spectrograms to parameter posteriors via residual networks and normalizing flows, producing results consistent with LVK analyses on GWTC-2.1 and GWTC-3 events while running in seconds.

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-07-09T01:19:36.082576Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6930d246118708c3985c5b1e3584aa8a460c2107e82085e4dc73660b1720992f

Aliases

arxiv: 2505.08089 · arxiv_version: 2505.08089v3 · doi: 10.48550/arxiv.2505.08089 · pith_short_12: NEYNERQRQ4EM · pith_short_16: NEYNERQRQ4EMHGC4 · pith_short_8: NEYNERQR

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/NEYNERQRQ4EMHGC4LMPDLBFKRJ \
  | 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: 6930d246118708c3985c5b1e3584aa8a460c2107e82085e4dc73660b1720992f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2f6db6173e18c582857151b165cb61cc1d1f7e46ba43c4dd388f804ca581d790",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2025-05-12T21:49:25Z",
    "title_canon_sha256": "a7cab0159462f861a58590e1f473732e07f40910e2e6c6e235de75b2a9d2eca7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.08089",
    "kind": "arxiv",
    "version": 3
  }
}