Typed states for the displayed outbound observations.
Source: paper_references, paper_reference_links
Paper Citation Record · LEDGER
Extremal black holes have external light rings
As of 15 August 2026, this Paper Citation Record lists 0 of 0 outbound references and 4 inbound Pith citation observations for arXiv:2211.15983.
A citation records a reference. It does not transfer a finding from one paper to another.
Coverage vector
One-hop event checks from named stored sources.
Source: scholarly_work_events, retraction_status_cache, observed 2026-08-15T06:32:42.880941+00:00
Pith citing papers itemized under the disclosed page cap.
Source: paper_references, paper_reference_links, observed 2026-08-11T16:21:20.225180Z
A source-named dated measurement, never combined with another source.
Source: pith, observed 2026-08-09T12:30:55.138403Z
Reference resolution
0 of 0 outbound references displayed
- verified exact0
- verified fuzzy0
- unresolved0
- parse uncertain0
- malformed identifier0
- metadata mismatch0
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 9ea2b33b-561e-46d3-9901-770136130847 · inbound
Bounds for Lyapunov exponent of circular light orbits in black holes cites this paper.
Bounds for Lyapunov exponent of circular light orbits in black holes Extremal black holes have external light rings
Reference 54
- Resolution
- unresolved
- no resolver link, observed 2026-08-11T16:21:20.225180Z
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 6a9d735e-8c45-4502-9784-c0e253b6dab0 · inbound
A Compact theorem on the compactness of ultra-compact objects with monotonically decreasing matter fields cites this paper.
A Compact theorem on the compactness of ultra-compact objects with monotonically decreasing matter fields Extremal black holes have external light rings
Reference 6
- Resolution
- verified exact
- local_arxiv, observed 2026-08-09T12:30:55.141501Z
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.
Observation caf79900-e4d9-460e-bd71-7eefaf3b0cb4 · inbound
Regular black holes with Minkowskian cores: causal structure and observational degeneracy cites this paper.
Regular black holes with Minkowskian cores: causal structure and observational degeneracy Extremal black holes have external light rings
Reference 74
- Resolution
- unresolved
- no resolver link, observed 2026-07-14T09:49:12.477717Z
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation d9ea905c-5b32-4261-a0c2-3298d73af01f · inbound
Regular black holes with Minkowskian cores: causal structure and observational degeneracy cites this paper.
Regular black holes with Minkowskian cores: causal structure and observational degeneracy Extremal black holes have external light rings
Reference 84
- Resolution
- unresolved
- no resolver link, observed 2026-08-02T07:17:50.125651Z
Source-reported events for the cited work
Unavailable: canonical work link unavailable.