Pith Number

pith:WQ4GDKM6

pith:2007:WQ4GDKM6HAEARBRD5542TTJVLK

not attested not anchored not stored refs resolved

A Cosmological Framework for the Co-Evolution of Quasars, Supermassive Black Holes, and Elliptical Galaxies: I. Galaxy Mergers & Quasar Activity

Dusan Keres (Harvard/CfA), Lars Hernquist, Philip F. Hopkins, Thomas J. Cox

Major gas-rich galaxy mergers drive the observed rise and fall of quasar activity from redshift zero to six.

arxiv:0706.1243 v2 · 2007-06-08 · astro-ph

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\usepackage{pith}
\pithnumber{WQ4GDKM6HAEARBRD5542TTJVLK}

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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.

Claims

C1strongest claim

Making the simple ansatz that major, gas-rich mergers cause quasar activity, this naturally reproduces the observed rise and fall of the quasar luminosity density from z=0-6, as well as quasar LFs, fractions, host galaxy colors, and clustering as a function of redshift and luminosity.

C2weakest assumption

The simple ansatz that major, gas-rich mergers cause quasar activity.

C3one line summary

Galaxy merger-driven quasar model reproduces observed quasar luminosity density evolution, luminosity functions, clustering, and host properties from z=0 to 6.

References

300 extracted · 300 resolved · 20 Pith anchors

[1] L., & Steidel , C 2005

[2] L., Steidel , C 2005

[3] M., Bauer , F 2005

[4] M., Smail , I., Bauer , F 2005

[5] D., Driver , S 2006

Formal links

2 machine-checked theorem links

Cited by

37 papers in Pith

First detection of ultra-fast outflows in a quiescent galaxy

AGN radiative feedback as the main regulator of [O III] outflow activity and obscuration in X-ray AGN

Direct VLBI evidence for a buried AGN in the triple-merger LIRG UGC 2369S

Unveil the nature of JWST-AGN and Little Red Dots with SKAO continuum surveys

Deep Extragalactic VIsible Legacy Survey (DEVILS): Morphologically-selected galaxy merger fractions and their direct comparison to close-pair samples

Receipt and verification

First computed	2026-07-04T17:04:08.389647Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b43861a99e3808088623ef79a9cd355aabcec41518defa5ce6e7607e374d2c5a

Aliases

arxiv: 0706.1243 · arxiv_version: 0706.1243v2 · doi: 10.48550/arxiv.0706.1243 · pith_short_12: WQ4GDKM6HAEA · pith_short_16: WQ4GDKM6HAEARBRD · pith_short_8: WQ4GDKM6

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/WQ4GDKM6HAEARBRD5542TTJVLK \
  | 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: b43861a99e3808088623ef79a9cd355aabcec41518defa5ce6e7607e374d2c5a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ab0e7f70c537984bf85fe76df1d136c285b5aa3a3ecccd9203537bf7e72d207b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-06-08T20:05:34Z",
    "title_canon_sha256": "1a327b614dd886120e0fa9b34b427dd2a7cfdceac671e2b0050b5897dca26ad3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0706.1243",
    "kind": "arxiv",
    "version": 2
  }
}