Pith Number

pith:M4MRBBG5

pith:2025:M4MRBBG5HAI3AEQS6BJH3GW5FB

not attested not anchored not stored refs resolved

Changing-Look Active Galactic Nuclei in SDSS-V: Host-Galaxy Properties and Black-Hole Scaling Relations

Andrea Merloni, Anton M. Koekemoer, Benny Trakhtenbrot, Castalia Alenka Negrete Pe\~naloza, Catarina Aydar, Claudio Ricci, Donald P. Schneider, Franz E. Bauer, Grisha Zeltyn, H\'ector Hern\'andez-Toledo, James Aird, Jessie Runnoe, Joel R. Brownstein, Johannes Buchner, Kaushik Chatterjee, Laura Duffy, Lorena Hern\'andez-Garc\'ia, Mara Salvato, Marzena \'Sniegowska, Michael Eracleous, Mirko Krumpe, Roberto J. Assef, Scott F. Anderson, Sean Morrison, W.N. Brandt, Yue Shen

CL-AGNs live in typical AGN host galaxies and follow standard black-hole scaling relations.

arxiv:2511.07532 v2 · 2025-11-10 · astro-ph.GA

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\pithnumber{M4MRBBG5HAI3AEQS6BJH3GW5FB}

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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

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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

These results suggest that CL-AGNs reside in typical AGN host galaxies and that their extreme variability is likely unrelated to host-galaxy environment, supporting the idea that CL-AGNs are not a distinct population, but rather represent a phase of normal AGN activity.

C2weakest assumption

The MgII emission line analysis is assumed to reliably exclude variable obscuration as the driver for the majority of the sample, and the stellar population and scaling relation comparisons assume the SDSS type 2 AGN control sample is well-matched in selection and measurement methods.

C3one line summary

CL-AGNs follow the usual M_BH-sigma_* and M_BH-M_* scaling relations of inactive galaxies with typical host stellar populations, indicating they are a phase of normal AGN activity rather than a distinct population.

References

3 extracted · 3 resolved · 0 Pith anchors

[1] " * write output.state after.block = add.period write newline

[2] write newline

[3] flux densities 2019 · doi:10.5281/zenodo.831784

Formal links

2 machine-checked theorem links

Cited by

1 paper in Pith

Identifying Changing-Look AGN Transitions in Light Curve Data with the Zwicky Transient Facility

Receipt and verification

First computed	2026-05-17T23:39:00.883583Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

67191084dd3811b01212f0527d9add286bda079a04a4c922c6239726a9027d5e

Aliases

arxiv: 2511.07532 · arxiv_version: 2511.07532v2 · doi: 10.48550/arxiv.2511.07532 · pith_short_12: M4MRBBG5HAI3 · pith_short_16: M4MRBBG5HAI3AEQS · pith_short_8: M4MRBBG5

Agent API

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/M4MRBBG5HAI3AEQS6BJH3GW5FB \
  | 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: 67191084dd3811b01212f0527d9add286bda079a04a4c922c6239726a9027d5e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a9d86ed06d064f18f519ad082266e69ba1c796e9830498d04b5f604e90bfb871",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2025-11-10T19:00:07Z",
    "title_canon_sha256": "3351c0ac40ca90f336092d594edf45ad0d3a30432181f6b37714c80d799eaac2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2511.07532",
    "kind": "arxiv",
    "version": 2
  }
}