Typed states for the displayed outbound observations.
Source: paper_references, paper_reference_links
Paper Citation Record · LEDGER
The Refractive Index of Curved Spacetime II: QED, Penrose Limits and Black Holes
As of 7 August 2026, this Paper Citation Record lists 0 of 0 outbound references and 1 inbound Pith citation observation for arXiv:0905.0771.
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 2026-08-07T06:34:17.273281+00:00
Pith citing papers itemized under the disclosed page cap.
Source: paper_references, paper_reference_links, observed 2026-08-05T10:55:29.931996Z
A source-named dated measurement, never combined with another source.
Source: pith, observed 2026-08-05T10:55:32.004472Z
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 d2d2ae9a-e00f-460a-8ac3-cb2066db8ee0 · inbound
Perturbations of Plane Waves and Quadratic Quasinormal Modes on the Lightring cites this paper.
Perturbations of Plane Waves and Quadratic Quasinormal Modes on the Lightring The Refractive Index of Curved Spacetime II: QED, Penrose Limits and Black Holes
Reference 85
- Resolution
- verified exact
- local_arxiv, observed 2026-08-05T10:55:32.010002Z
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.