Pith Number

pith:VU7SHG5M

pith:2008:VU7SHG5MBKAN7VKMNSBPUSA53L

not attested not anchored not stored refs pending

Acceleration of Galactic Supershells by Lyman Alpha Radiation

Abraham Loeb, Mark Dijkstra

arxiv:0809.2099 v2 · 2008-09-11 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VU7SHG5MBKAN7VKMNSBPUSA53L}

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.

Receipt and verification

First computed	2026-05-18T02:15:34.784543Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ad3f239bac0a80dfd54c6c82fa481ddaeb6bcff6b5e33ad8f8f69d06c68a66f8

Aliases

arxiv: 0809.2099 · arxiv_version: 0809.2099v2 · doi: 10.48550/arxiv.0809.2099 · pith_short_12: VU7SHG5MBKAN · pith_short_16: VU7SHG5MBKAN7VKM · pith_short_8: VU7SHG5M

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/VU7SHG5MBKAN7VKMNSBPUSA53L \
  | 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: ad3f239bac0a80dfd54c6c82fa481ddaeb6bcff6b5e33ad8f8f69d06c68a66f8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a11338406606cc81651d5d43449a805a2fd3c48bc20825b356925482b9eade2a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-09-11T20:22:02Z",
    "title_canon_sha256": "9384ace7d8667068c130febc2177a19e838f85d809510ee26bc333eb0f9408de"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.2099",
    "kind": "arxiv",
    "version": 2
  }
}