Pith Number

pith:AKB2ELHP

pith:2026:AKB2ELHPQYDB7TQRGPB4QXUTQL

not attested not anchored not stored refs pending

High-Frequency Gravitational Waves from the Galactic Pulsar Population

Anne S. Freise, Jamie I. McDonald, Kirill Riabtsev, Samuel J. Witte

Galactic pulsars generate an astrophysical foreground of high-frequency gravitational waves in the MHz band that can overlap with and partially obscure the thermal signal from early-Universe plasma.

arxiv:2604.16191 v2 · 2026-04-17 · astro-ph.HE

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\usepackage{pith}
\pithnumber{AKB2ELHPQYDB7TQRGPB4QXUTQL}

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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

✓ Portable graph bundle live · download bundle · merged state

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

Integrating this description over a normal-pulsar population, we find an astrophysical foreground in the MHz-scale high-frequency band that can overlap with and partially obscure the thermal gravitational-wave signal sourced by the plasma of the early Universe.

C2weakest assumption

The normalization remains sensitive to the modeled assumptions about discharge cycles, particle-in-cell calibration, and the lifting of longitudinal discharge to cap-scale emission.

C3one line summary

The Galactic normal-pulsar population produces a high-frequency gravitational-wave foreground in the MHz range from polar-cap discharges that can partially obscure primordial thermal signals.

Receipt and verification

First computed	2026-05-21T05:03:27.559960Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0283a22cef86061fce1133c3c85e9382c6250810e5f2c0cc33e7e06f6b0505d9

Aliases

arxiv: 2604.16191 · arxiv_version: 2604.16191v2 · doi: 10.48550/arxiv.2604.16191 · pith_short_12: AKB2ELHPQYDB · pith_short_16: AKB2ELHPQYDB7TQR · pith_short_8: AKB2ELHP

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/AKB2ELHPQYDB7TQRGPB4QXUTQL \
  | 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: 0283a22cef86061fce1133c3c85e9382c6250810e5f2c0cc33e7e06f6b0505d9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bac5dc5346121ed1d54f277d8c10cd8247891a40d531ee8f178731624d588ab0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2026-04-17T15:59:51Z",
    "title_canon_sha256": "4576b0616e3d08d11071e23f87c918f0eb8fb10a16d47be00e6e39644009010f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.16191",
    "kind": "arxiv",
    "version": 2
  }
}