Pith Number

pith:E5NKI6PK

pith:2019:E5NKI6PKWH5TSSZCA2OXZL56F4

not attested not anchored not stored refs pending

Hubble Space Telescope non-detection of PSR J2144-3933: the coldest known neutron star

A. Reisenegger, B. Rangelov, C. Reyes, G. G. Pavlov, L. Rodriguez, O. Kargaltsev, S. Guillot

arxiv:1901.07998 v2 · 2019-01-23 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{E5NKI6PKWH5TSSZCA2OXZL56F4}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

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

2 papers in Pith

Probing freeze-in dark matter using Bose-Einstein condensate in neutron star

Constraining dark matter self-interaction from kinetic heating in neutron stars

Receipt and verification

First computed	2026-05-17T23:48:30.774288Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

275aa479eab1fb394b22069d7cafbe2f193bd1d69dadedf63bdc409cd275d405

Aliases

arxiv: 1901.07998 · arxiv_version: 1901.07998v2 · doi: 10.48550/arxiv.1901.07998 · pith_short_12: E5NKI6PKWH5T · pith_short_16: E5NKI6PKWH5TSSZC · pith_short_8: E5NKI6PK

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/E5NKI6PKWH5TSSZCA2OXZL56F4 \
  | 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: 275aa479eab1fb394b22069d7cafbe2f193bd1d69dadedf63bdc409cd275d405

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c42236c63735be152d5d4c3e6786e806ed16b5035910823b54a10dfcd91ed2c2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2019-01-23T16:52:23Z",
    "title_canon_sha256": "c83db9a5e537030b049a99d4c4ebb6cbb1c6a239f4422d48498a752efecb673a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.07998",
    "kind": "arxiv",
    "version": 2
  }
}