Typed states for the displayed outbound observations.
Source: paper_references, paper_reference_links, observed 2026-08-11T17:55:26.661547Z
Paper Citation Record · LEDGER
As of 15 August 2026, this Paper Citation Record lists 54 of 54 outbound references and 10 inbound Pith citation observations for arXiv:2412.08551.
A citation records a reference. It does not transfer a finding from one paper to another.
Typed states for the displayed outbound observations.
Source: paper_references, paper_reference_links, observed 2026-08-11T17:55:26.661547Z
One-hop event checks from named stored sources.
Source: scholarly_work_events, retraction_status_cache, observed 2026-08-14T06:32:32.682623+00:00
Pith citing papers itemized under the disclosed page cap.
Source: paper_references, paper_reference_links, observed 2026-08-11T10:41:13.063520Z
A source-named dated measurement, never combined with another source.
Source: arxiv_reference, observed 2026-05-12T01:31:23.541782Z
54 of 54 outbound references displayed
External citation measurements
No source-named external measurement is stored.
Observation a2369578-d59a-43e5-b40f-0a582feaa262 · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Holography of the Photon Ring
Reference 1
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation b9c214ee-58b5-47f9-acff-31d41ebdbe09 · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Photon Rings Around Warped Black Holes
Reference 2
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 90e06f66-4d9a-4824-8624-51617fa60fd1 · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Quasinormal Modes from Penrose Limits
Reference 3
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 42e96582-12d2-429e-896f-ee8ea103e69e · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Penrose, Any Space-Time has a Plane Wave as a Limit , pp
Reference 4
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-14T06:32:32.682623+00:00.
Observation aab9d280-0c63-4e8b-a7aa-ee166b95c7e1 · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Strings in flat space and pp waves from ${\cal N}=4$ Super Yang Mills
Reference 5
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 316e3a1f-dd91-4af8-a1df-5c6d15b01260 · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Aspects of hidden and manifest SL(2,R) symmetry in 2D near-horizon black-hole background
Reference 6
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-14T06:32:32.682623+00:00.
Observation 73cca5fe-a95f-41d5-812e-3e0a58df5059 · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Horizon State, Hawking Radiation and Boundary Liouville Model
Reference 7
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-14T06:32:32.682623+00:00.
Observation 0165f000-d81c-453e-824c-e5a8554c1c58 · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Quasi normal modes: A simple derivation of the level spacing of the frequencies
Reference 8
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 2daccc7e-d578-4ba4-b06c-f3bab1e9e411 · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Dirty black holes: Quasinormal modes
Reference 9
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 66eccb93-bc20-4398-81a0-72713e636410 · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Dirty black holes: Quasinormal modes for "squeezed" horizons
Reference 10
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation f98ff829-134e-48f7-8cba-dbb3438cdba3 · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Quasinormal frequencies using the hidden conformal symmetry of the Schwarzschild black hole
Reference 11
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-14T06:32:32.682623+00:00.
Observation 6add12d6-363e-4823-95d6-8c49abe2b0c1 · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Quasinormal modes and hidden conformal symmetry in the Reissner-Nordstrom black hole
Reference 12
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-14T06:32:32.682623+00:00.
Observation d69e6411-e6fa-4506-bf3c-7e3f292d1aab · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes A scattering approach to some aspects of the Schwarzschild Black Hole
Reference 13
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 337dd3c1-b7b4-43e0-93e7-17cbcb6b7a98 · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Near-horizon quasinormal modes of charged scalar around a general spherically symmetric black hole
Reference 14
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-14T06:32:32.682623+00:00.
Observation 48870c6d-c030-413a-8059-b65a439c898d · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes The overtone level spacing of a black hole quasinormal frequencies: a fingerprint of a local $SL(2,\mathbb{R})$ symmetry
Reference 15
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-14T06:32:32.682623+00:00.
Observation 46c92411-b9e9-4260-9474-6973ee343fa0 · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Black hole bulk-cone singularities
Reference 16
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation c7df618d-66b2-4483-8d35-0cb0eca5922e · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Unresolved cited work
Reference 17
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-14T06:32:32.682623+00:00.
Observation a405f3db-013f-4aec-8182-f5f6298e465f · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Unresolved cited work
Reference 18
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-14T06:32:32.682623+00:00.
Observation c798e564-7563-476c-8485-4b61b3f0beee · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Unresolved cited work
Reference 19
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-14T06:32:32.682623+00:00.
Observation 70af56d2-b2a1-4d61-a4cf-ad3663361c33 · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Iyer and C
Reference 20
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-14T06:32:32.682623+00:00.
Observation f4581788-9c36-4a66-8673-f75b9b591fdd · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Iyer, Black Hole Normal Modes: a WKB Approach
Reference 21
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-14T06:32:32.682623+00:00.
Observation a01c94a0-039c-4e13-a039-a0c450fe3e8f · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Unresolved cited work
Reference 22
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-14T06:32:32.682623+00:00.
Observation 99461ad5-d07a-4e62-891a-dc58abc1a422 · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Complex Eigenvalues of the Parabolic Potential Barrier and Gel'fand Triplet
Reference 23
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-14T06:32:32.682623+00:00.
Observation d94176af-ebd9-4426-90c9-3d85ffe7a72c · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Unresolved cited work
Reference 24
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 4898ec5e-0a82-41f5-bfec-85844420a9a6 · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Blau, Plane Waves and Penrose Limits , http://www.blau.itp.unibe.ch/lecturesPP.pdf
Reference 25
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-14T06:32:32.682623+00:00.
Observation 55372fb8-bf94-4e56-8d3d-3b30fbe555ee · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Kaigorodov spaces and their Penrose limits
Reference 26
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-14T06:32:32.682623+00:00.
Observation 76957170-de41-40bc-ab60-d21c1fa2e105 · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes The Universality of Penrose Limits near Space-Time Singularities
Reference 27
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 616b6287-4c67-428a-bf7d-3e00e753f32e · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Landauer, Associated Legendre Polynomial Approximations, Journal of Applied Physics 22 (01, 1951) 87–89
Reference 28
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-14T06:32:32.682623+00:00.
Observation 0030ba9e-65c9-4e8b-9918-62c6fad6722a · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Bohr's Correspondence Principle and The Area Spectrum of Quantum Black Holes
Reference 29
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation adf3a35c-8fda-419d-af06-19bdc161ce80 · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes An analytical computation of asymptotic Schwarzschild quasinormal frequencies
Reference 30
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 01c2bf56-8a60-4b91-8418-025751afd469 · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Asymptotic black hole quasinormal frequencies
Reference 31
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 7efa9960-f0df-496a-ab9c-c24f6fb1a2f0 · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Unresolved cited work
Reference 32
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-14T06:32:32.682623+00:00.
Observation f0cf4a12-a831-4e17-88bd-d6d660a7acd7 · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Nollert, Quasinormal modes of Schwarzschild black holes: The determination of quasinormal frequencies with very large imaginary parts , Phys
Reference 33
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-14T06:32:32.682623+00:00.
Observation 0a4cec7c-8454-40fa-bb93-92657368fa13 · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Andersson, On the asymptotic distribution of quasinormal-mode frequencies for schwarzschild black holes , Classical and Quantum Gravity 10 (June, 1993) L61
Reference 34
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-14T06:32:32.682623+00:00.
Observation e442565b-511d-4372-88f0-695b5e48aee4 · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes The asymptotic quasinormal mode spectrum of non-rotating black holes
Reference 35
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 840d01a2-aae7-4ce4-a833-80cabae53836 · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Fermi Coordinates and Penrose Limits
Reference 36
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 89704a75-f759-4a13-afd8-f67777545165 · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Quasinormal-mode spectrum of Kerr black holes and its geometric interpretation
Reference 37
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 786f4abb-33ba-4907-8886-c89c39eba8ab · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Highly damped quasinormal modes of Kerr black holes
Reference 38
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 4dd64dd0-8b5e-44c1-954b-a6b6e19e8e94 · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Highly Damped Quasinormal Modes of Kerr Black Holes: A Complete Numerical Investigation
Reference 39
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 1d39a927-8897-4b84-b2c6-de283fe068d6 · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Analytic Study of Rotating Black-Hole Quasinormal Modes
Reference 40
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 56e7b619-f5a6-47fe-918d-198ae717b7ad · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Asymptotic Spectroscopy of Rotating Black Holes
Reference 41
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation a9214fa6-1396-422a-a2ce-f2e2eb89a737 · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes On lightcone string field theory from Super Yang-Mills and holography
Reference 42
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-14T06:32:32.682623+00:00.
Observation 7eafc091-7c56-4290-86c3-5647968e1925 · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Plane Waves: To infinity and beyond!
Reference 43
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-14T06:32:32.682623+00:00.
Observation 8a6002af-ca53-48eb-a8d3-c65bcd1db564 · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Unresolved cited work
Reference 44
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-14T06:32:32.682623+00:00.
Observation aa591ca5-4d28-44bb-a8ba-9fdb9631c305 · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Unresolved cited work
Reference 45
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-14T06:32:32.682623+00:00.
Observation 2731b90e-1597-475f-9285-10a8bab930ff · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Unresolved cited work
Reference 46
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-14T06:32:32.682623+00:00.
Observation 2a45c6d4-a842-4a60-ae9a-5ffccc38a59d · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Strings in homogeneous gravitational waves and null holography
Reference 47
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-14T06:32:32.682623+00:00.
Observation 57efb68e-f1a6-45fd-b5ae-5d41bc3ab1c7 · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Exactly solvable model of superstring in Ramond-Ramond plane wave background
Reference 48
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation a3de55d2-1cac-474e-86f1-397d77643bf9 · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes The Kerr/CFT Correspondence
Reference 49
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 593fabfc-7c5e-4079-9053-182dc0edb0ce · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Black Hole Superradiance From Kerr/CFT
Reference 50
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation b6c0f045-abda-4dd0-84e6-8b001017de4b · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Logarithmic Corrections to Kerr Thermodynamics
Reference 51
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation e9409c95-561b-462f-83de-26e61b85913c · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Singularities of thermal correlators at strong coupling
Reference 52
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 71e02eb4-5307-4444-ab7c-c05cb386578c · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes The Black Hole Singularity in AdS/CFT
Reference 53
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation fdf7bf8c-16a3-42a1-a49a-6e188a5dc84c · outbound
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes Comments on the double cone wormhole
Reference 54
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 25e2f601-9d70-474d-9e0a-1a5b85c5bf7c · inbound
Black hole spectroscopy: from theory to experiment pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes
Reference 234
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-14T06:32:32.682623+00:00.
Observation 06392ada-c2cb-4c46-82d8-6b502eeab629 · inbound
Why there is no Love in black holes pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes
Reference 38
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation de3cbb54-69ec-4091-aab4-ac81f00acbb4 · inbound
Photon rings in a holographic toy model pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes
Reference 30
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation e3b59721-95fa-4088-b4cb-85d4ea150f35 · inbound
Infinite-dimensional symmetries in plane wave spacetimes pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes
Reference 26
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-14T06:32:32.682623+00:00.
Observation 890d3848-c19c-4df5-85aa-2428a886f316 · inbound
Perturbations of Plane Waves and Quadratic Quasinormal Modes on the Lightring pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes
Reference 82
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 037eac15-09d1-4827-9f67-011bf2091f47 · inbound
Ringdown waves from hairy black holes pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes
Reference 19
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 1eff4626-fc0b-4674-849e-e9679679e019 · inbound
Ringdown waves from hairy black holes pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes
Reference 19
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 1f25db92-c2c5-4dcf-8cf7-4f69acfda27a · inbound
Quasinormal Modes of pp-Wave Spacetimes and Zero Temperature Dissipation pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes
Reference 16
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-14T06:32:32.682623+00:00.
Observation 1a2ec716-0b97-4d1d-be4b-72fd5bc0407b · inbound
Gravitational electric-magnetic duality at the light ring and quasinormal mode isospectrality in effective field theories pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes
Reference 60
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-14T06:32:32.682623+00:00.
Observation 19689465-3341-45d1-bdd8-03feb4166e1b · inbound
Thermal Origin of Black Hole Quasinormal Modes pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes
Reference 23
Source-reported events for the cited work
Unavailable: canonical work link unavailable.