Pith Number

pith:WCFLUVJL

pith:2026:WCFLUVJLKZPTQJBSAR4353DA3U

not attested not anchored not stored refs pending

Double Neutron Star Delay Times Across Cosmic Metallicities: The Role of Helium Star Progenitors

Abhishek Chattaraj, Elizabeth Teng, Jeff J. Andrews, Max Briel, Philipp M. Srivastava, Seth Gossage, Tassos Fragos, Vicky Kalogera

Helium main-sequence radii set a minimum orbital size that pushes most double neutron star mergers to occur 80-250 million years after star formation.

arxiv:2605.03128 v2 · 2026-05-04 · astro-ph.SR · astro-ph.GA · astro-ph.HE

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\usepackage{pith}
\pithnumber{WCFLUVJLKZPTQJBSAR4353DA3U}

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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

Our results indicate that, independent of binary physics assumptions, the majority of DNS mergers across metallicities occur typically no earlier than ≃ 40 Myr after star formation and peaks strongly between 80-250 Myr. Roughly 15% of DNSs merge within 80 Myr... while ≳ 20% merge on delay times >1 Gyr.

C2weakest assumption

At a given metallicity, the stellar radius during the helium main-sequence sets a lower limit on the size of the DNS orbit at birth, drawn from insights rooted in single and binary star physics.

C3one line summary

Simulations show double neutron star mergers peak 80-250 million years after star formation across metallicities, with 15% quick mergers and over 20% delayed over a billion years.

Cited by

1 paper in Pith

Binary Neutron Star Merger Evolution and r-Process Enrichment in the Milky Way Disk

Receipt and verification

First computed	2026-06-12T00:07:49.293048Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b08aba552b565f3824320479beec60dd139f3335a5473161ce1351ef4f1f8932

Aliases

arxiv: 2605.03128 · arxiv_version: 2605.03128v2 · doi: 10.48550/arxiv.2605.03128 · pith_short_12: WCFLUVJLKZPT · pith_short_16: WCFLUVJLKZPTQJBS · pith_short_8: WCFLUVJL

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/WCFLUVJLKZPTQJBSAR4353DA3U \
  | 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: b08aba552b565f3824320479beec60dd139f3335a5473161ce1351ef4f1f8932

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "24040dd849ada193d72d671c708f57a37fc7111ed1889ed8e6a8cb60cc9a423b",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.HE"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2026-05-04T20:10:59Z",
    "title_canon_sha256": "51861c7adec7d825a0d321d7f3cfbede4c1b778745ca7abb0bbce58669cb3fed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.03128",
    "kind": "arxiv",
    "version": 2
  }
}