Paper Citation Record · LEDGER

A possible close supermassive black-hole binary in a quasar with optical periodicity

As of 7 August 2026, this Paper Citation Record lists 0 of 0 outbound references and 5 inbound Pith citation observations for arXiv:1501.01375.

A citation records a reference. It does not transfer a finding from one paper to another.

pith.paper-citation-record.v1
1501.01375 v1

Coverage vector

measured 0 of 0 reference resolution

Typed states for the displayed outbound observations.

Source: paper_references, paper_reference_links

measured 5 of 5 standing notices

One-hop event checks from named stored sources.

Source: scholarly_work_events, retraction_status_cache, observed 2026-08-07T06:34:17.273281+00:00

measured 5 of 5 inbound itemization

Pith citing papers itemized under the disclosed page cap.

Source: paper_references, paper_reference_links, observed 2026-08-06T21:45:16.477607Z

measured 0 of 1 external citation measurements

A source-named dated measurement, never combined with another source.

Source: pith, observed 2026-06-30T01:34:10.424080Z

Reference resolution

0 of 0 outbound references displayed

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verified fuzzy0
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External citation measurements

No source-named external measurement is stored.

Outbound references

No outbound reference observations are available for this paper version.

Pith citing papers

Observation d98872e7-f1a8-4c08-8408-3eef2b3958d8 · inbound

Continuum optical-UV and X-ray variability of AGN: current results and future challenges cites this paper.

Continuum optical-UV and X-ray variability of AGN: current results and future challenges A possible close supermassive black-hole binary in a quasar with optical periodicity

Reference 93

Resolution: unresolved; no resolver link, observed 2026-08-06T21:45:16.477607Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation de2bd093-4a2e-4ef0-ad03-c9c89d4e88d0 · inbound

Reaching diffraction-limited localization with coherent PTAs cites this paper.

Reaching diffraction-limited localization with coherent PTAs A possible close supermassive black-hole binary in a quasar with optical periodicity

Reference 13

Resolution: verified exact; local_arxiv, observed 2026-05-16T22:48:37.847228Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-07T06:34:17.273281+00:00.

Observation 99a723c2-6c5e-4b5b-a6b7-4ecd70cb679a · inbound

Dual AGN and Multiple SMBH Systems in the Era of SKAO cites this paper.

Dual AGN and Multiple SMBH Systems in the Era of SKAO A possible close supermassive black-hole binary in a quasar with optical periodicity

Reference 62

Resolution: verified exact; local_arxiv, observed 2026-06-30T01:34:10.427349Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-07T06:34:17.273281+00:00.

Observation 29fcac82-b563-46cb-b6ee-b6d2c903cdeb · inbound

QuickGWecc: Fast Bayesian pipeline for searching eccentric binaries in pulsar timing array data cites this paper.

QuickGWecc: Fast Bayesian pipeline for searching eccentric binaries in pulsar timing array data A possible close supermassive black-hole binary in a quasar with optical periodicity

Reference 11

Resolution: unresolved; no resolver link, observed 2026-08-01T00:47:55.099374Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation dcdf8acc-d528-4f8f-8f01-e1c6d4b6a188 · inbound

Cosmic Pairs: A DESI Census of Dual and Offset AGN as Precursors to Massive Black Hole Binaries cites this paper.

Cosmic Pairs: A DESI Census of Dual and Offset AGN as Precursors to Massive Black Hole Binaries A possible close supermassive black-hole binary in a quasar with optical periodicity

Reference 47

Resolution: unresolved; no resolver link, observed 2026-08-01T08:20:59.252030Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.