Pith Number

pith:LAWARRTB

pith:2025:LAWARRTBOLNLKJ63STJLUPD7BR

not attested not anchored not stored refs pending

Evolution of X-ray Gas in SN 1987A from 2007 to 2021: Ring Fading and Ejecta Brightening Unveiled through Differential Emission Measure Analysis

Emanuele Greco, Jacco Vink, Lei Sun, Marco Miceli, Ping Zhou, Salvatore Orlando, Yang Chen

arxiv:2501.18090 v1 · 2025-01-30 · 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{LAWARRTBOLNLKJ63STJLUPD7BR}

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

1 paper in Pith

Chandra X-Ray Imaging and Spatially Resolved Spectroscopy of SN 1987A: Energy-Dependent Morphology of the Equatorial Ring

Receipt and verification

First computed	2026-07-05T10:07:06.902773Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

582c08c66172dab527db94d2ba3c7f0c74bc074eb9ee0b9be67252f40fba722f

Aliases

arxiv: 2501.18090 · arxiv_version: 2501.18090v1 · doi: 10.48550/arxiv.2501.18090 · pith_short_12: LAWARRTBOLNL · pith_short_16: LAWARRTBOLNLKJ63 · pith_short_8: LAWARRTB

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/LAWARRTBOLNLKJ63STJLUPD7BR \
  | 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: 582c08c66172dab527db94d2ba3c7f0c74bc074eb9ee0b9be67252f40fba722f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "88168f946b877845faa7e1be762f6795fb8716c5c220ac04222f8befa28a96e6",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2025-01-30T02:01:08Z",
    "title_canon_sha256": "03adea66b8a47d8f6ced918f79dfe75f7ac3fc74c103b63ad8253507e22b26fb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2501.18090",
    "kind": "arxiv",
    "version": 1
  }
}