Pith Number

pith:7EHA7PNL

pith:2005:7EHA7PNLQPNKHODO4EHCCNZ6IV

not attested not anchored not stored refs pending

Energy input from quasars regulates the growth and activity of black holes and their host galaxies

CMU), Lars Hernquist (Harvard), Tiziana Di Matteo (MPA, Volker Springel (MPA)

arxiv:astro-ph/0502199 v1 · 2005-02-09 · 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{7EHA7PNLQPNKHODO4EHCCNZ6IV}

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

36 papers in Pith

Tracing black hole and galaxy growth across environments since cosmic noon

First detection of ultra-fast outflows in a quiescent galaxy

Dust destruction signals shock-accelerated outflows in the nearby active galaxy NGC 1068

Clustering of high-redshift quasars with DESI DR2

Dust destruction signals shock-accelerated outflows in the nearby active galaxy NGC 1068

Receipt and verification

First computed	2026-07-04T16:50:48.031371Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f90e0fbdab83daa3b86ee10e21373e45766aeb96f00de79eeeecb62669238d8f

Aliases

arxiv: astro-ph/0502199 · arxiv_version: astro-ph/0502199v1 · doi: 10.48550/arxiv.astro-ph/0502199 · pith_short_12: 7EHA7PNLQPNK · pith_short_16: 7EHA7PNLQPNKHODO · pith_short_8: 7EHA7PNL

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/7EHA7PNLQPNKHODO4EHCCNZ6IV \
  | 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: f90e0fbdab83daa3b86ee10e21373e45766aeb96f00de79eeeecb62669238d8f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7af21eaef1e51ca0cff1cd4c1ce1a4ac2e0b412dc4c4efe5d5e84642e962f464",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-02-09T18:45:56Z",
    "title_canon_sha256": "55fd43c77867a3b0048249fb11eea080c93c0e3e51dea7c222b120dd1151ef0f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0502199",
    "kind": "arxiv",
    "version": 1
  }
}