Pith Number

pith:OBPROVU3

pith:2009:OBPROVU3T4UCP5ZDTAULQPSLCZ

not attested not anchored not stored refs pending

Shocks and Bubbles in a Deep Chandra Observation of the Cooling Flow Cluster Abell 2052

2, (2) Harvard-Smithsonian Center for Astrophysics, (3) University of Virginia, (4) Naval Research Lab, (5) University of Waterloo, 6) ((1) Boston University, (6) Perimeter Institute for Theoretical Physics), B. R. McNamara (5, C. L. Sarazin (3), E. L. Blanton (1), E. M. Douglass (1), Inc., Interferometrics, S. W. Randall (2), T. E. Clarke (4)

arxiv:0904.1610 v1 · 2009-04-09 · astro-ph.CO · 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{OBPROVU3T4UCP5ZDTAULQPSLCZ}

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	2026-05-18T04:29:43.630614Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

705f17569b9f2827f7239828b83e4b16791cb2d78137da8a443f71ae58a65f0d

Aliases

arxiv: 0904.1610 · arxiv_version: 0904.1610v1 · doi: 10.48550/arxiv.0904.1610 · pith_short_12: OBPROVU3T4UC · pith_short_16: OBPROVU3T4UCP5ZD · pith_short_8: OBPROVU3

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/OBPROVU3T4UCP5ZDTAULQPSLCZ \
  | 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: 705f17569b9f2827f7239828b83e4b16791cb2d78137da8a443f71ae58a65f0d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "689a2cf65c24b1418f87dc7b12627278ee87732eaf3e93ff55a440bbf7742644",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-04-09T22:55:38Z",
    "title_canon_sha256": "6f32fa5b91d2e4842dc39c8644b3512c3eebf31a6e21cb16238484b59f5214e2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.1610",
    "kind": "arxiv",
    "version": 1
  }
}