Pith Number

pith:KJHC7QHM

pith:2014:KJHC7QHM3JPZZIVM7BVCMMQHQO

not attested not anchored not stored refs pending

The critical radiation intensity for direct collapse black hole formation: dependence on the radiation spectral shape

Akio K. Inoue, Kazuyuki Omukai, Kazuyuki Sugimura

arxiv:1407.4039 v1 · 2014-07-15 · astro-ph.GA · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

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.

Cited by

1 paper in Pith

Direct Collapse Black Hole Candidates from Decaying Dark Matter

Receipt and verification

First computed	2026-05-18T01:42:36.581228Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

524e2fc0ecda5f9ca2acf86a26320783ad50163bfd637c436d0ec9991b53fac6

Aliases

arxiv: 1407.4039 · arxiv_version: 1407.4039v1 · doi: 10.48550/arxiv.1407.4039 · pith_short_12: KJHC7QHM3JPZ · pith_short_16: KJHC7QHM3JPZZIVM · pith_short_8: KJHC7QHM

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/KJHC7QHM3JPZZIVM7BVCMMQHQO \
  | 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: 524e2fc0ecda5f9ca2acf86a26320783ad50163bfd637c436d0ec9991b53fac6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b69d4036bcb99de5d1331bbea956eda9b421a72d403c0124b7eff405d3ee06df",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2014-07-15T16:10:48Z",
    "title_canon_sha256": "3bbd4c49aaca343b58471a1c2adc46644a7340b782a9c338a803ef66aa743a68"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.4039",
    "kind": "arxiv",
    "version": 1
  }
}