Paper Citation Record · LEDGER

Estimating the spins of supermassive black holes in distant ultraluminous quasars

As of 16 August 2026, this Paper Citation Record lists 46 of 46 outbound references and 2 inbound Pith citation observations for arXiv:2505.08310.

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

pith.paper-citation-record.v1
2505.08310 v1

Coverage vector

measured 46 of 46 reference resolution

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Source: paper_references, paper_reference_links, observed 2026-08-15T22:06:53.118038Z

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measured 2 of 2 inbound itemization

Pith citing papers itemized under the disclosed page cap.

Source: paper_references, paper_reference_links, observed 2026-08-06T22:16:48.834825Z

measured 0 of 1 external citation measurements

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

Source: arxiv_reference, observed 2026-07-01T11:05:42.567783Z

Reference resolution

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External citation measurements

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Outbound references

Observation 6ec1337c-009c-4820-b9f7-23ec854e01cb · outbound

This paper cites A Luminous Quasar at Redshift 7.642.

Estimating the spins of supermassive black holes in distant ultraluminous quasars A Luminous Quasar at Redshift 7.642

Reference 1

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Observation babc36d5-93be-48c3-8372-51dac0a03e93 · outbound

This paper cites Quasars and the Intergalactic Medium at Cosmic Dawn.

Estimating the spins of supermassive black holes in distant ultraluminous quasars Quasars and the Intergalactic Medium at Cosmic Dawn

Reference 2

Resolution: unresolved; no resolver link, observed 2026-08-15T22:06:52.963743Z

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Observation 1cb88b2d-cb33-4908-a477-13a2f015fca6 · outbound

This paper cites Physical properties of 15 quasars at $z\gtrsim 6.5$.

Estimating the spins of supermassive black holes in distant ultraluminous quasars Physical properties of 15 quasars at $z\gtrsim 6.5$

Reference 3

Resolution: unresolved; no resolver link, observed 2026-08-15T22:06:52.967425Z

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Observation 3f8666c6-0452-4e46-a41c-50bc65de96d1 · outbound

This paper cites Gemini GNIRS near-infrared spectroscopy of 50 quasars at z>~5.7.

Estimating the spins of supermassive black holes in distant ultraluminous quasars Gemini GNIRS near-infrared spectroscopy of 50 quasars at z>~5.7

Reference 4

Resolution: unresolved; no resolver link, observed 2026-08-15T22:06:52.971100Z

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Observation 96cc4f68-9b84-4be2-92b4-a67bd6581188 · outbound

This paper cites XQR-30: Black Hole Masses and Accretion Rates of 42 z>6 Quasars.

Estimating the spins of supermassive black holes in distant ultraluminous quasars XQR-30: Black Hole Masses and Accretion Rates of 42 z>6 Quasars

Reference 5

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Observation 1c751ffe-e0c6-473e-9815-82c85e849dbe · outbound

This paper cites XQR-30: the ultimate XSHOOTER quasar sample at the reionization epoch.

Estimating the spins of supermassive black holes in distant ultraluminous quasars XQR-30: the ultimate XSHOOTER quasar sample at the reionization epoch

Reference 6

Resolution: unresolved; no resolver link, observed 2026-08-15T22:06:52.978179Z

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Observation 368e45e4-16a1-42b2-9942-baffeb8293a2 · outbound

This paper cites Formation of Supermassive Black Holes.

Estimating the spins of supermassive black holes in distant ultraluminous quasars Formation of Supermassive Black Holes

Reference 7

Resolution: unresolved; no resolver link, observed 2026-08-15T22:06:52.981952Z

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Observation 73557091-e6bc-42fd-aa81-b24988973266 · outbound

This paper cites The Early Growth of the First Black Holes.

Estimating the spins of supermassive black holes in distant ultraluminous quasars The Early Growth of the First Black Holes

Reference 8

Resolution: verified exact; local_arxiv, observed 2026-08-15T22:06:53.475362Z

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Observation 9ce576d0-091b-4583-9826-6d52c4b1735e · outbound

This paper cites Formation of Supermassive Black Holes by Direct Collapse in Pregalactic Halos.

Estimating the spins of supermassive black holes in distant ultraluminous quasars Formation of Supermassive Black Holes by Direct Collapse in Pregalactic Halos

Reference 9

Resolution: unresolved; no resolver link, observed 2026-08-15T22:06:52.989029Z

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Observation 8a169f6d-b324-44c8-9942-26ac35d2985d · outbound

This paper cites an unresolved cited work.

Estimating the spins of supermassive black holes in distant ultraluminous quasars Unresolved cited work

Reference 10

Resolution: unresolved; raw_fallback, observed 2026-08-15T22:06:53.632185Z

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Observation bac913cf-dfea-4949-bfba-97edf22ad53b · outbound

This paper cites The hierarchical assembly of galaxies and black holes in the first billion years: predictions for the era of gravitational wave astronomy.

Estimating the spins of supermassive black holes in distant ultraluminous quasars The hierarchical assembly of galaxies and black holes in the first billion years: predictions for the era of gravitational wave astronomy

Reference 11

Resolution: unresolved; no resolver link, observed 2026-08-15T22:06:52.999674Z

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Observation 5887884e-5b0c-4b9e-a857-9e8cd173c609 · outbound

This paper cites The Assembly of Supermassive Black Holes at High Redshifts.

Estimating the spins of supermassive black holes in distant ultraluminous quasars The Assembly of Supermassive Black Holes at High Redshifts

Reference 12

Resolution: unresolved; no resolver link, observed 2026-08-15T22:06:53.003348Z

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Observation 48334a58-bb43-4a36-8685-7cd4508bd063 · outbound

This paper cites The Assembly of the First Massive Black Holes.

Estimating the spins of supermassive black holes in distant ultraluminous quasars The Assembly of the First Massive Black Holes

Reference 13

Resolution: unresolved; no resolver link, observed 2026-08-15T22:06:53.006800Z

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Observation a7fb7c66-2dcb-4d4f-933b-ec38339b451b · outbound

This paper cites Growing massive black holes through super-critical accretion of stellar-mass seeds.

Estimating the spins of supermassive black holes in distant ultraluminous quasars Growing massive black holes through super-critical accretion of stellar-mass seeds

Reference 14

Resolution: unresolved; no resolver link, observed 2026-08-15T22:06:53.010096Z

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Observation 8ca60ca8-01f1-40ef-9b58-3acfeecf8104 · outbound

This paper cites On the Accretion Rates and Radiative Efficiencies of the Highest Redshift Quasars.

Estimating the spins of supermassive black holes in distant ultraluminous quasars On the Accretion Rates and Radiative Efficiencies of the Highest Redshift Quasars

Reference 15

Resolution: verified exact; local_arxiv, observed 2026-08-15T22:06:53.405582Z

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Observation 1ea76f75-de90-4c08-a969-26cc6fa7f67d · outbound

This paper cites Evidence for Low Radiative Efficiency or Highly Obscured Growth of $z>7$ Quasars.

Estimating the spins of supermassive black holes in distant ultraluminous quasars Evidence for Low Radiative Efficiency or Highly Obscured Growth of $z>7$ Quasars

Reference 16

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Observation 5951df5c-318d-4e12-87f6-17c016a63a25 · outbound

This paper cites HYPerluminous quasars at the Epoch of ReionizatION (HYPERION). A new regime for the X-ray nuclear properties of the first quasars.

Estimating the spins of supermassive black holes in distant ultraluminous quasars HYPerluminous quasars at the Epoch of ReionizatION (HYPERION). A new regime for the X-ray nuclear properties of the first quasars

Reference 17

Resolution: unresolved; no resolver link, observed 2026-08-15T22:06:53.020395Z

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Observation 51b7881b-0522-4552-ab01-2fbeeabaf112 · outbound

This paper cites Fan,New A Rev.50(November 2006) 665.

Estimating the spins of supermassive black holes in distant ultraluminous quasars Fan,New A Rev.50(November 2006) 665

Reference 18

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Observation 1b0af423-2e07-4e83-a34b-e011b7487697 · outbound

This paper cites Composite Quasar Spectra From the Sloan Digital Sky Survey.

Estimating the spins of supermassive black holes in distant ultraluminous quasars Composite Quasar Spectra From the Sloan Digital Sky Survey

Reference 19

Resolution: unresolved; no resolver link, observed 2026-08-15T22:06:53.027007Z

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Observation 9082253f-59cb-4b2f-ae45-fc15e086a289 · outbound

This paper cites A Catalog of Quasar Properties from SDSS DR7.

Estimating the spins of supermassive black holes in distant ultraluminous quasars A Catalog of Quasar Properties from SDSS DR7

Reference 20

Resolution: unresolved; no resolver link, observed 2026-08-15T22:06:53.030336Z

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Observation 5c7ab625-3453-46b3-823e-1cd31d555699 · outbound

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Estimating the spins of supermassive black holes in distant ultraluminous quasars Unresolved cited work

Reference 21

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Observation a6dad3c2-2b7f-4b33-8d56-7be95a31a3df · outbound

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Estimating the spins of supermassive black holes in distant ultraluminous quasars Unresolved cited work

Reference 22

Resolution: unresolved; raw_fallback, observed 2026-08-15T22:06:53.599948Z

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Observation 5f2a8e94-062d-4eeb-9db4-3cc2556b1e3f · outbound

This paper cites Making black holes visible: accretion, radiation, and jets.

Estimating the spins of supermassive black holes in distant ultraluminous quasars Making black holes visible: accretion, radiation, and jets

Reference 23

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Observation 72e5f0f0-3329-452e-9bce-a0858caecaf6 · outbound

This paper cites an unresolved cited work.

Estimating the spins of supermassive black holes in distant ultraluminous quasars Unresolved cited work

Reference 24

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Observation 1d799f1b-7a78-4682-8078-50946e11c649 · outbound

This paper cites an unresolved cited work.

Estimating the spins of supermassive black holes in distant ultraluminous quasars Unresolved cited work

Reference 25

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Observation 3fe31af6-e785-47f2-ac21-67e93fca8d20 · outbound

This paper cites The Radiative Efficiency of Accretion Flows in Individual AGN.

Estimating the spins of supermassive black holes in distant ultraluminous quasars The Radiative Efficiency of Accretion Flows in Individual AGN

Reference 26

Resolution: unresolved; no resolver link, observed 2026-08-15T22:06:53.051019Z

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Observation d6993f36-14f4-4e30-876b-b47f893c72ff · outbound

This paper cites Can we measure the accretion efficiency of Active Galactic Nuclei?.

Estimating the spins of supermassive black holes in distant ultraluminous quasars Can we measure the accretion efficiency of Active Galactic Nuclei?

Reference 27

Resolution: verified exact; local_arxiv, observed 2026-08-15T22:06:53.337551Z

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Observation d7b670f4-fa23-404e-a218-afc43369e5b0 · outbound

This paper cites Supermassive black holes with high accretion rates in active galactic nuclei: I. First results from a new reverberation mapping campaign.

Estimating the spins of supermassive black holes in distant ultraluminous quasars Supermassive black holes with high accretion rates in active galactic nuclei: I. First results from a new reverberation mapping campaign

Reference 28

Resolution: unresolved; no resolver link, observed 2026-08-15T22:06:53.057986Z

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Observation 953429ba-0549-4215-9913-7ce5282eaa18 · outbound

This paper cites The Most Massive Active Black-Holes at z~1.5-3.5 Have High Spins and Radiative Efficiencies.

Estimating the spins of supermassive black holes in distant ultraluminous quasars The Most Massive Active Black-Holes at z~1.5-3.5 Have High Spins and Radiative Efficiencies

Reference 29

Resolution: unresolved; no resolver link, observed 2026-08-15T22:06:53.061694Z

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Observation e03c0eb0-a1a6-4461-a63f-1d180afde0f3 · outbound

This paper cites A catalog of optical to X-ray spectral energy distributions of z~2 quasars observed with Swift. I: First results.

Estimating the spins of supermassive black holes in distant ultraluminous quasars A catalog of optical to X-ray spectral energy distributions of z~2 quasars observed with Swift. I: First results

Reference 30

Resolution: verified exact; local_arxiv, observed 2026-08-15T22:06:53.304939Z

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Observation e577c317-3052-4ab9-979a-80732c06fe7d · outbound

This paper cites an unresolved cited work.

Estimating the spins of supermassive black holes in distant ultraluminous quasars Unresolved cited work

Reference 31

Resolution: unresolved; raw_fallback, observed 2026-08-15T22:06:53.567313Z

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Observation cc29dcbc-e049-4503-ae19-62b2f7ad374a · outbound

This paper cites Spectral Energy Distributions and Multiwavelength Selection of Type 1 Quasars.

Estimating the spins of supermassive black holes in distant ultraluminous quasars Spectral Energy Distributions and Multiwavelength Selection of Type 1 Quasars

Reference 32

Resolution: unresolved; no resolver link, observed 2026-08-15T22:06:53.071882Z

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Observation 9efffa0b-b5e5-4f52-88b4-0c7d56ed22f8 · outbound

This paper cites An Observational Determination of the Bolometric Quasar Luminosity Function.

Estimating the spins of supermassive black holes in distant ultraluminous quasars An Observational Determination of the Bolometric Quasar Luminosity Function

Reference 33

Resolution: unresolved; no resolver link, observed 2026-08-15T22:06:53.075552Z

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Observation 592137d8-53f9-4f21-9a3a-00a8ce32e2a3 · outbound

This paper cites Modeling accretion disk emission with generalized temperature profile and its effect on AGN spectral energy distribution.

Estimating the spins of supermassive black holes in distant ultraluminous quasars Modeling accretion disk emission with generalized temperature profile and its effect on AGN spectral energy distribution

Reference 34

Resolution: verified exact; local_arxiv, observed 2026-08-15T22:06:53.271879Z

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Observation a8fabe9e-e67e-4403-a38e-8212e05ab3c5 · outbound

This paper cites Bolometric correction factors for Active Galactic Nuclei.

Estimating the spins of supermassive black holes in distant ultraluminous quasars Bolometric correction factors for Active Galactic Nuclei

Reference 35

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Observation c47f0699-c755-4357-837e-49a4f47cdd7e · outbound

This paper cites Universal bolometric corrections for AGN over 7 luminosity decades.

Estimating the spins of supermassive black holes in distant ultraluminous quasars Universal bolometric corrections for AGN over 7 luminosity decades

Reference 36

Resolution: unresolved; no resolver link, observed 2026-08-15T22:06:53.086297Z

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Observation d89c8ffe-4008-440b-973d-196e69d2b684 · outbound

This paper cites On the geometry of broad emission region in quasars.

Estimating the spins of supermassive black holes in distant ultraluminous quasars On the geometry of broad emission region in quasars

Reference 37

Resolution: verified exact; local_arxiv, observed 2026-08-15T22:06:53.232329Z

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Observation dd2216c2-3335-4f8f-9593-883b445ab782 · outbound

This paper cites Super-Eddington accretion rates in Narrow Line Seyfert 1 galaxies.

Estimating the spins of supermassive black holes in distant ultraluminous quasars Super-Eddington accretion rates in Narrow Line Seyfert 1 galaxies

Reference 38

Resolution: verified exact; local_arxiv, observed 2026-08-15T22:06:53.216711Z

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Observation 8965a7af-230d-4b53-8a97-c3abaccd8ccf · outbound

This paper cites Black Hole Spin and Accretion Disk Magnetic Field Strength Estimates for more than 750 AGN and Multiple GBH.

Estimating the spins of supermassive black holes in distant ultraluminous quasars Black Hole Spin and Accretion Disk Magnetic Field Strength Estimates for more than 750 AGN and Multiple GBH

Reference 39

Resolution: unresolved; no resolver link, observed 2026-08-15T22:06:53.096846Z

Source-reported events for the cited work

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Observation 102a87b5-be69-4ac9-bd0c-488ef3b86b7b · outbound

This paper cites Observational Constraints on Black Hole Spin.

Estimating the spins of supermassive black holes in distant ultraluminous quasars Observational Constraints on Black Hole Spin

Reference 40

Resolution: unresolved; no resolver link, observed 2026-08-15T22:06:53.100242Z

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Observation f80ad3ff-4956-460a-bdf6-b1ed829b3e55 · outbound

This paper cites Disentangling the AGN and Star-Formation Contributions to the Radio-X-ray Emission of Radio-Loud Quasars at 1<z<2.

Estimating the spins of supermassive black holes in distant ultraluminous quasars Disentangling the AGN and Star-Formation Contributions to the Radio-X-ray Emission of Radio-Loud Quasars at 1<z<2

Reference 41

Resolution: unresolved; no resolver link, observed 2026-08-15T22:06:53.103870Z

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Observation 38a032df-1269-41ff-a026-4089a5f2b5e8 · outbound

This paper cites an unresolved cited work.

Estimating the spins of supermassive black holes in distant ultraluminous quasars Unresolved cited work

Reference 42

Resolution: unresolved; raw_fallback, observed 2026-08-15T22:06:53.557462Z

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Observation 1a647f4d-e05b-44a3-a38b-7ed5ddddb071 · outbound

This paper cites Determination of supermassive black hole spins in local active galactic nuclei.

Estimating the spins of supermassive black holes in distant ultraluminous quasars Determination of supermassive black hole spins in local active galactic nuclei

Reference 43

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Observation da3d3346-57c3-46ea-98aa-b53619ac013f · outbound

This paper cites Red quasars: estimation of SMBH spin, mass and accretion disk inclination angle.

Estimating the spins of supermassive black holes in distant ultraluminous quasars Red quasars: estimation of SMBH spin, mass and accretion disk inclination angle

Reference 44

Resolution: unresolved; no resolver link, observed 2026-08-15T22:06:53.114516Z

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Observation f973632e-3304-46b2-b9f8-0a95e701d538 · outbound

This paper cites Estimate of SMBH Spin for Narrow-Line Seyfert 1 Galaxies.

Estimating the spins of supermassive black holes in distant ultraluminous quasars Estimate of SMBH Spin for Narrow-Line Seyfert 1 Galaxies

Reference 45

Resolution: unresolved; no resolver link, observed 2026-08-15T22:06:53.118038Z

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Observation 8d1f1d92-c95d-409b-b41b-ac9b6142cb40 · outbound

This paper cites The formation of direct collapse black holes under the influence of streaming velocities.

Estimating the spins of supermassive black holes in distant ultraluminous quasars The formation of direct collapse black holes under the influence of streaming velocities

Reference 2017

Resolution: unresolved; no resolver link, observed 2026-08-15T22:06:52.996015Z

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Pith citing papers

Observation 4f10bd96-1830-44a8-b025-a60fdd8024a6 · inbound

Spins of SMBHs in distant low luminosity AGNs cites this paper.

Spins of SMBHs in distant low luminosity AGNs Estimating the spins of supermassive black holes in distant ultraluminous quasars

Reference 21

Resolution: unresolved; no resolver link, observed 2026-08-06T22:16:48.834825Z

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Observation 41b734bc-8524-4853-bc40-92404d9e04ce · inbound

Estimation of black hole spins in low-mass AGNs and comparison with other types of AGNs cites this paper.

Estimation of black hole spins in low-mass AGNs and comparison with other types of AGNs Estimating the spins of supermassive black holes in distant ultraluminous quasars

Reference 45

Resolution: verified exact; arxiv_id, observed 2026-07-01T11:05:42.569199Z

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