Pith Number

pith:LPHKE4RD

pith:2018:LPHKE4RDPACQJYB2AVLK5D2EER

not attested not anchored not stored refs pending

Detection of intrinsic source structure at ~3 Schwarzschild radii with Millimeter-VLBI observations of SAGITTARIUS A*

Alan E. E. Rogers, Alan L. Roy, Alessandra Bertarini, Avery E. Broderick, Christiaan Brinkerink, Christopher Beaudoin, Christopher H. Greer, Daniel P. Marrone, David MacMahon, Dimitrios Psaltis, Eduardo Ros, Geoffrey B. Crew, Geoffrey C. Bower, Heino Falcke, Helge Rottmann, Ivan Mart\'i-Vidal, James Lamb, James M. Moran, J. Anton Zensus, Jan Wagner, Jason Dexter, Jason SooHoo, Jonathan Weintroub, Jordan Stone, Junhan Kim, Justin Spilker, Karl M. Menten, Kazunori Akiyama, Keiichi Asada, Ken H. Young, Laura Vertatschitsch, Lindy Blackburn, Lucy M. Ziurys, Makoto Inoue, Mareki Honma, Mark A. Gurwell, Matt Dexter, Melvyn Wright, Michael D. Johnson, Michael Lindqvist, Michael Titus, Neil M. Nagar, Paul T. P. Ho, Per Friberg, Peter Strittmatter, Ray Blundell, Remo P. J. Tilanus, Richard L. Plambeck, Robert Freund, Roger Cappallo, Rurik A. Primiani, Ru-Sen Lu, Sheperd S. Doeleman, Thomas P. Krichbaum, Vincent L. Fish, Walter Alef

arxiv:1805.09223 v1 · 2018-05-23 · astro-ph.GA · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LPHKE4RDPACQJYB2AVLK5D2EER}

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	2026-05-18T00:14:07.256310Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5bcea27223780504e03a0556ae8f44247c60f64540d65115b343a992f43acf5d

Aliases

arxiv: 1805.09223 · arxiv_version: 1805.09223v1 · doi: 10.48550/arxiv.1805.09223 · pith_short_12: LPHKE4RDPACQ · pith_short_16: LPHKE4RDPACQJYB2 · pith_short_8: LPHKE4RD

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/LPHKE4RDPACQJYB2AVLK5D2EER \
  | 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: 5bcea27223780504e03a0556ae8f44247c60f64540d65115b343a992f43acf5d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4f9e88a0c110a49eb8518a2c4c47c0d1bb73fe7919e2e3e4c0274b32d948ee20",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-05-23T15:26:01Z",
    "title_canon_sha256": "6cef3a733726e6a23c507e6593746d7d117e5680e2e820657c648565f89cd453"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.09223",
    "kind": "arxiv",
    "version": 1
  }
}