Paper Citation Record · LEDGER

Studying black holes on horizon scales with space-VLBI

As of 15 August 2026, this Paper Citation Record lists 41 of 41 outbound references and 1 inbound Pith citation observation for arXiv:1909.01405.

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

pith.paper-citation-record.v1
1909.01405 v1

Coverage vector

measured 41 of 41 reference resolution

Typed states for the displayed outbound observations.

Source: paper_references, paper_reference_links, observed 2026-08-14T05:24:12.383370Z

measured 42 of 42 standing notices

One-hop event checks from named stored sources.

Source: scholarly_work_events, retraction_status_cache, observed 2026-08-15T06:32:42.880941+00:00

measured 1 of 1 inbound itemization

Pith citing papers itemized under the disclosed page cap.

Source: paper_references, paper_reference_links, observed 2026-08-02T03:10:33.532513Z

measured 0 of 1 external citation measurements

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

Source: cited_works

Reference resolution

41 of 41 outbound references displayed

verified exact3
verified fuzzy6
unresolved27
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External citation measurements

No source-named external measurement is stored.

Outbound references

Observation e7eb932d-a029-43fd-bf02-06850164535f · outbound

This paper cites Instability, turbulence, and enhanced transport in accretion disks.

Studying black holes on horizon scales with space-VLBI Instability, turbulence, and enhanced transport in accretion disks

Reference 1

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Source-reported events for the cited work

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Observation 12e64e3a-5b7f-4337-92f6-2b04e5d7b1b6 · outbound

This paper cites Development of the active space hydrogen maser for the ACES space experiment of ESA.

Studying black holes on horizon scales with space-VLBI Development of the active space hydrogen maser for the ACES space experiment of ESA

Reference 2

Resolution: verified fuzzy; raw_fallback, observed 2026-08-14T05:24:13.375494Z

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 032e940b-664d-4d5d-a608-ca453ffb494e · outbound

This paper cites Reconstructing Video of Time-Varying Sources from Radio Interfer- ometric Measurements.

Studying black holes on horizon scales with space-VLBI Reconstructing Video of Time-Varying Sources from Radio Interfer- ometric Measurements

Reference 3

Resolution: unresolved; no resolver link, observed 2026-08-14T05:24:12.183375Z

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Observation 4dcf29f9-7ae7-45fd-bcbb-52a69404aabb · outbound

This paper cites Imaging optically-thin hotspots near the black hole horizonofSgrA*atradioandnear-infraredwavelengths.

Studying black holes on horizon scales with space-VLBI Imaging optically-thin hotspots near the black hole horizonofSgrA*atradioandnear-infraredwavelengths

Reference 4

Resolution: unresolved; no resolver link, observed 2026-08-14T05:24:12.188620Z

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Observation 751179b5-ed15-4e06-aa68-d0dc622bdb31 · outbound

This paper cites The ACES Mission: Scientiﬁc Objectives and Present Status.

Studying black holes on horizon scales with space-VLBI The ACES Mission: Scientiﬁc Objectives and Present Status

Reference 5

Resolution: verified fuzzy; raw_fallback, observed 2026-08-14T05:24:13.355367Z

Source-reported events for the cited work

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Observation 9347d594-0b05-4813-b178-079bbba18e3e · outbound

This paper cites High Resolution Linear Polarimetric Imaging for the Event Horizon Telescope.

Studying black holes on horizon scales with space-VLBI High Resolution Linear Polarimetric Imaging for the Event Horizon Telescope

Reference 6

Resolution: unresolved; no resolver link, observed 2026-08-14T05:24:12.199116Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 6f2d2f2d-9715-404a-961b-0b2ecac3e2db · outbound

This paper cites Interferometric Imaging Directly with Closure Phases and Closure Amplitudes.

Studying black holes on horizon scales with space-VLBI Interferometric Imaging Directly with Closure Phases and Closure Amplitudes

Reference 7

Resolution: unresolved; no resolver link, observed 2026-08-14T05:24:12.204998Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 12c58e75-d9c6-4298-99e4-8028c371261c · outbound

This paper cites The role of electron heating physics in images and variability of the Galactic Centre black hole Sagittarius A*.

Studying black holes on horizon scales with space-VLBI The role of electron heating physics in images and variability of the Galactic Centre black hole Sagittarius A*

Reference 8

Resolution: verified fuzzy; raw_fallback, observed 2026-08-14T05:24:13.337743Z

Source-reported events for the cited work

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Observation 9989ef66-b765-4ac8-a6f7-58a2d1c20768 · outbound

This paper cites A 340 GHz cryogenic ampliﬁer based spectrometer for space based atmospheric science applications.

Studying black holes on horizon scales with space-VLBI A 340 GHz cryogenic ampliﬁer based spectrometer for space based atmospheric science applications

Reference 9

Resolution: metadata mismatch; raw_fallback, observed 2026-08-14T05:24:13.079479Z

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 68c199b6-4f7a-4d1c-b718-701c70e8b541 · outbound

This paper cites Recent Developments in Precision High Strain Composite Hinges for Deployable Space Telescopes.

Studying black holes on horizon scales with space-VLBI Recent Developments in Precision High Strain Composite Hinges for Deployable Space Telescopes

Reference 10

Resolution: verified fuzzy; raw_fallback, observed 2026-08-14T05:24:13.319547Z

Source-reported events for the cited work

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Observation 95ed2b3a-588d-4543-af8d-561741bc842e · outbound

This paper cites First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole.

Studying black holes on horizon scales with space-VLBI First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole

Reference 11

Resolution: unresolved; no resolver link, observed 2026-08-14T05:24:12.232792Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 6a99d309-3435-4d39-bf0b-72b73202226d · outbound

This paper cites First M87 Event Horizon Telescope Results. II. Array and Instrumentation.

Studying black holes on horizon scales with space-VLBI First M87 Event Horizon Telescope Results. II. Array and Instrumentation

Reference 12

Resolution: unresolved; no resolver link, observed 2026-08-14T05:24:12.238122Z

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Observation 7f026dde-633f-4569-87c1-78129e0a300f · outbound

This paper cites First M87 Event Horizon Telescope Results. III. Data Processing and Calibration.

Studying black holes on horizon scales with space-VLBI First M87 Event Horizon Telescope Results. III. Data Processing and Calibration

Reference 13

Resolution: unresolved; no resolver link, observed 2026-08-14T05:24:12.243270Z

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Observation f245d785-8d89-4d83-a597-4d7360ac587a · outbound

This paper cites First M87 Event Horizon Telescope Results. IV. Imaging the Central Supermassive Black Hole.

Studying black holes on horizon scales with space-VLBI First M87 Event Horizon Telescope Results. IV. Imaging the Central Supermassive Black Hole

Reference 14

Resolution: unresolved; no resolver link, observed 2026-08-14T05:24:12.248135Z

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Unavailable: canonical work link unavailable.

Observation 1913bb0b-95a5-4eb5-9a62-054a7f6628b2 · outbound

This paper cites First M87 Event Horizon Telescope Results. V. Physical Origin of the Asymmetric Ring.

Studying black holes on horizon scales with space-VLBI First M87 Event Horizon Telescope Results. V. Physical Origin of the Asymmetric Ring

Reference 15

Resolution: unresolved; no resolver link, observed 2026-08-14T05:24:12.253209Z

Source-reported events for the cited work

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Observation bab2e103-34fb-40ba-b9c6-542e0265bd7b · outbound

This paper cites First M87 Event Horizon Telescope Results. VI. The Shadow and Mass of the Central Black Hole.

Studying black holes on horizon scales with space-VLBI First M87 Event Horizon Telescope Results. VI. The Shadow and Mass of the Central Black Hole

Reference 16

Resolution: unresolved; no resolver link, observed 2026-08-14T05:24:12.258326Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation b2210472-eaef-4f46-8fa0-6eb4b5c04474 · outbound

This paper cites Imaging Black Holes and Jets with a VLBI Array Including Multiple Space-Based Telescopes.

Studying black holes on horizon scales with space-VLBI Imaging Black Holes and Jets with a VLBI Array Including Multiple Space-Based Telescopes

Reference 17

Resolution: unresolved; no resolver link, observed 2026-08-14T05:24:12.264161Z

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Unavailable: canonical work link unavailable.

Observation 226c5a89-c297-449c-bada-765203350d6d · outbound

This paper cites Detection of orbital motions near the last stable circular orbit of the massive black hole SgrA*.

Studying black holes on horizon scales with space-VLBI Detection of orbital motions near the last stable circular orbit of the massive black hole SgrA*

Reference 18

Resolution: unresolved; no resolver link, observed 2026-08-14T05:24:12.269654Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation a51cdbb2-fed3-4858-a1ed-09dd15ad9286 · outbound

This paper cites Detection of the gravitational redshift in the orbit of the star S2 near the Galactic centre massive black hole.

Studying black holes on horizon scales with space-VLBI Detection of the gravitational redshift in the orbit of the star S2 near the Galactic centre massive black hole

Reference 19

Resolution: unresolved; no resolver link, observed 2026-08-14T05:24:12.275153Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 248a6efc-6f70-45a0-b029-0434f52f1f54 · outbound

This paper cites Locality of MHD Turbulence in Isothermal Disks.

Studying black holes on horizon scales with space-VLBI Locality of MHD Turbulence in Isothermal Disks

Reference 20

Resolution: unresolved; no resolver link, observed 2026-08-14T05:24:12.280426Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation ca912fd9-9c05-40d0-85f7-4e9ec73c0c21 · outbound

This paper cites Dynamical Imaging with Interferometry.

Studying black holes on horizon scales with space-VLBI Dynamical Imaging with Interferometry

Reference 21

Resolution: unresolved; no resolver link, observed 2026-08-14T05:24:12.285492Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 297e5a26-0014-4b12-97e6-d6b5572b2563 · outbound

This paper cites The Scattering and Intrinsic Structure of Sagittarius A* at Radio Wavelengths.

Studying black holes on horizon scales with space-VLBI The Scattering and Intrinsic Structure of Sagittarius A* at Radio Wavelengths

Reference 22

Resolution: unresolved; no resolver link, observed 2026-08-14T05:24:12.290461Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation b5a89587-49b8-48aa-98dd-f5088cbb9b66 · outbound

This paper cites Detection of intrinsic source structure at ~3 Schwarzschild radii with Millimeter-VLBI observations of SAGITTARIUS A*.

Studying black holes on horizon scales with space-VLBI Detection of intrinsic source structure at ~3 Schwarzschild radii with Millimeter-VLBI observations of SAGITTARIUS A*

Reference 23

Resolution: unresolved; no resolver link, observed 2026-08-14T05:24:12.295851Z

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Unavailable: canonical work link unavailable.

Observation 2abc302b-78c0-4b87-a460-b76ab573f2f1 · outbound

This paper cites An X-ray, IR, and Submillimeter Flare of Sagittarius A*.

Studying black holes on horizon scales with space-VLBI An X-ray, IR, and Submillimeter Flare of Sagittarius A*

Reference 24

Resolution: verified exact; local_arxiv, observed 2026-08-14T05:24:12.901307Z

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 de952ca6-0b84-4df0-9846-ca0793fd2f91 · outbound

This paper cites The [ITAL]Submillimeter Wave Astronomy Satellite[/ITAL]: Science Objectives and Instrument Description.

Studying black holes on horizon scales with space-VLBI The [ITAL]Submillimeter Wave Astronomy Satellite[/ITAL]: Science Objectives and Instrument Description

Reference 25

Resolution: verified exact; doi, observed 2026-08-14T05:24:12.450522Z

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 3c1001ba-51fd-4fa1-aa64-7b94deecf2d3 · outbound

This paper cites Historical perspectives on the development of deployable reﬂec- tors.

Studying black holes on horizon scales with space-VLBI Historical perspectives on the development of deployable reﬂec- tors

Reference 26

Resolution: verified fuzzy; raw_fallback, observed 2026-08-14T05:24:13.302349Z

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 048273e7-5261-46ac-9dd7-e81ee1bacc0e · outbound

This paper cites Metrics and Motivations for Earth-Space VLBI: Time-Resolving Sgr A* with the Event Horizon Telescope.

Studying black holes on horizon scales with space-VLBI Metrics and Motivations for Earth-Space VLBI: Time-Resolving Sgr A* with the Event Horizon Telescope

Reference 27

Resolution: unresolved; no resolver link, observed 2026-08-14T05:24:12.317219Z

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Unavailable: canonical work link unavailable.

Observation 80b35ef3-bf1d-422f-996e-02eb6ad96a44 · outbound

This paper cites Herschel Space Observatory - An ESA facility for far-infrared and submillimetre astronomy.

Studying black holes on horizon scales with space-VLBI Herschel Space Observatory - An ESA facility for far-infrared and submillimetre astronomy

Reference 28

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Observation bf79c5a0-f8b5-4a8b-b858-cdb8627cf207 · outbound

This paper cites A General Relativistic Null Hypothesis Test with Event Horizon Telescope Observations of the black-hole shadow in Sgr A*.

Studying black holes on horizon scales with space-VLBI A General Relativistic Null Hypothesis Test with Event Horizon Telescope Observations of the black-hole shadow in Sgr A*

Reference 29

Resolution: unresolved; no resolver link, observed 2026-08-14T05:24:12.327590Z

Source-reported events for the cited work

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Observation f2013b31-1a8f-4ee1-ad57-c698d1346431 · outbound

This paper cites Cryogenic performance of HEMT ampliﬁers at 340GHz and 670GHz.

Studying black holes on horizon scales with space-VLBI Cryogenic performance of HEMT ampliﬁers at 340GHz and 670GHz

Reference 30

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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 a1ead09f-a557-4d7c-a2ce-f1cc91330a27 · outbound

This paper cites A 230 GHz MMIC-Based Sideband Separating Receiver.

Studying black holes on horizon scales with space-VLBI A 230 GHz MMIC-Based Sideband Separating Receiver

Reference 31

Resolution: metadata mismatch; raw_fallback, observed 2026-08-14T05:24:12.764200Z

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 5b3e617a-c241-4a27-a36e-9462559f17b6 · outbound

This paper cites TeraByte InfraRed Delivery (TBIRD): a demonstration of large- volume direct-to-Earth data transfer from low-Earth orbit.

Studying black holes on horizon scales with space-VLBI TeraByte InfraRed Delivery (TBIRD): a demonstration of large- volume direct-to-Earth data transfer from low-Earth orbit

Reference 32

Resolution: unresolved; no resolver link, observed 2026-08-14T05:24:12.344012Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 8a5078ea-8d34-4e4b-ae2e-789ae9822fa2 · outbound

This paper cites Simulations of imaging the event horizon of Sagittarius A* from space.

Studying black holes on horizon scales with space-VLBI Simulations of imaging the event horizon of Sagittarius A* from space

Reference 33

Resolution: unresolved; no resolver link, observed 2026-08-14T05:24:12.349174Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 24cd44b2-56b5-443b-88e8-8bc931322bb9 · outbound

This paper cites The ngVLA Reference Design.

Studying black holes on horizon scales with space-VLBI The ngVLA Reference Design

Reference 34

Resolution: verified fuzzy; raw_fallback, observed 2026-08-14T05:24:13.273571Z

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 8a900295-923f-4022-9a13-0e2796a14ac0 · outbound

This paper cites an unresolved cited work.

Studying black holes on horizon scales with space-VLBI Unresolved cited work

Reference 35

Resolution: unresolved; no resolver link, observed 2026-08-14T05:24:12.359175Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation b5e26dbb-b554-4272-a12e-6fe9781f45a2 · outbound

This paper cites Unification of the Fundamental Plane and Super-Massive Black Holes Masses.

Studying black holes on horizon scales with space-VLBI Unification of the Fundamental Plane and Super-Massive Black Holes Masses

Reference 36

Resolution: unresolved; no resolver link, observed 2026-08-14T05:24:12.363818Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 05d6d358-4cec-4fa1-9ea2-8619baf65c5d · outbound

This paper cites R2DBE: A Wideband Digital Backend for the Event Horizon Telescope.

Studying black holes on horizon scales with space-VLBI R2DBE: A Wideband Digital Backend for the Event Horizon Telescope

Reference 37

Resolution: unresolved; no resolver link, observed 2026-08-14T05:24:12.368724Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation db7d021e-d12f-482b-8e2a-00413130cf85 · outbound

This paper cites On the Nature of Magnetic Turbulence in Rotating, Shearing Flows.

Studying black holes on horizon scales with space-VLBI On the Nature of Magnetic Turbulence in Rotating, Shearing Flows

Reference 38

Resolution: verified exact; local_arxiv, observed 2026-08-14T05:24:12.604329Z

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 858eff25-d08d-4f9e-96d1-385a95b16afa · outbound

This paper cites Simultaneous Multi-Wavelength Observations of Sgr A* during 2007 April 1-11.

Studying black holes on horizon scales with space-VLBI Simultaneous Multi-Wavelength Observations of Sgr A* during 2007 April 1-11

Reference 39

Resolution: malformed identifier; local_arxiv, observed 2026-08-14T05:24:12.580297Z

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 c13b38cb-4778-410e-ad92-0922510bc4d5 · outbound

This paper cites RadioAstron orbit determination and evaluation of its results using correlation of space-VLBI observations.

Studying black holes on horizon scales with space-VLBI RadioAstron orbit determination and evaluation of its results using correlation of space-VLBI observations

Reference 40

Resolution: unresolved; no resolver link, observed 2026-08-14T05:24:12.383370Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 3255dcf1-94ee-4c45-a5f5-c3f4c85dd8d9 · outbound

This paper cites The role of electron heating physics in images and variability of the Galactic Centre black hole Sagittarius A*.

Studying black holes on horizon scales with space-VLBI The role of electron heating physics in images and variability of the Galactic Centre black hole Sagittarius A*

Reference 5229

Resolution: unresolved; no resolver link, observed 2026-08-14T05:24:12.216788Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Pith citing papers

Observation e78b34e2-d0f5-4897-8e94-7b8c91289024 · inbound

Dark matter environments and safeguards for spacetime inference from horizon scale interferometry cites this paper.

Dark matter environments and safeguards for spacetime inference from horizon scale interferometry Studying black holes on horizon scales with space-VLBI

Reference 29

Resolution: unresolved; no resolver link, observed 2026-08-02T03:10:33.532513Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.