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Paper Citation Record · LEDGER

New constraints on light Axion-Like Particles using Chandra Transmission Grating Spectroscopy of the powerful cluster-hosted quasar H1821+643

As of 16 August 2026, this Paper Citation Record lists 0 of 0 outbound references and 16 inbound Pith citation observations for arXiv:2109.03261.

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

pith.paper-citation-record.v1
2109.03261 v2

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measured 0 of 0 reference resolution

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Source: paper_references, paper_reference_links

measured 16 of 16 standing notices

One-hop event checks from named stored sources.

Source: scholarly_work_events, retraction_status_cache, observed 2026-08-16T06:30:59.297886+00:00

measured 16 of 16 inbound itemization

Pith citing papers itemized under the disclosed page cap.

Source: paper_references, paper_reference_links, observed 2026-08-16T12:40:30.955801Z

measured 0 of 1 external citation measurements

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

Source: arxiv_reference, observed 2026-07-03T06:27:42.404132Z

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External citation measurements

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Outbound references

No outbound reference observations are available for this paper version.

Pith citing papers

Observation c5764845-0352-4b26-8431-dfebdb3d1aec · inbound

Excess Radiation from Axion-Photon Conversion cites this paper.

Excess Radiation from Axion-Photon Conversion New constraints on light Axion-Like Particles using Chandra Transmission Grating Spectroscopy of the powerful cluster-hosted quasar H1821+643

Reference 38

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no resolver link, observed 2026-08-12T21:23:27.072853Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

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Observation 027f8873-71ab-4302-b838-aba28a68553c · inbound

Time-delayed gamma-ray signatures of heavy axions from core-collapse supernovae cites this paper.

Time-delayed gamma-ray signatures of heavy axions from core-collapse supernovae New constraints on light Axion-Like Particles using Chandra Transmission Grating Spectroscopy of the powerful cluster-hosted quasar H1821+643

Reference 50

Resolution
unresolved
no resolver link, observed 2026-08-11T13:29:11.015986Z

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Unavailable: canonical work link unavailable.

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Observation 5d036e17-56b0-4960-8c1e-1ae9fc6207b6 · inbound

Neutron Star Eclipses as Axion Laboratories cites this paper.

Neutron Star Eclipses as Axion Laboratories New constraints on light Axion-Like Particles using Chandra Transmission Grating Spectroscopy of the powerful cluster-hosted quasar H1821+643

Reference 43

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verified exact
arxiv_id, observed 2026-05-22T21:32:10.446504Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.

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Observation f2bea86e-f7cc-406e-99cf-f441d7bfe0fb · inbound

Search for Axions in Magnetic White Dwarf Polarization at Lick and Keck Observatories cites this paper.

Search for Axions in Magnetic White Dwarf Polarization at Lick and Keck Observatories New constraints on light Axion-Like Particles using Chandra Transmission Grating Spectroscopy of the powerful cluster-hosted quasar H1821+643

Reference 42

Resolution
unresolved
no resolver link, observed 2026-08-16T12:40:30.955801Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

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Observation fb792664-dc49-4640-b989-831e5f1df64b · inbound

Fresh look at the diffuse ALP background from supernovae cites this paper.

Fresh look at the diffuse ALP background from supernovae New constraints on light Axion-Like Particles using Chandra Transmission Grating Spectroscopy of the powerful cluster-hosted quasar H1821+643

Reference 62

Resolution
unresolved
no resolver link, observed 2026-08-15T23:12:42.966546Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

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Observation a3b8273b-db30-4f9c-ac10-4d3f8e644352 · inbound

Active galactic nuclei through the prism of galaxy clusters: bounds on axion-like particles cites this paper.

Active galactic nuclei through the prism of galaxy clusters: bounds on axion-like particles New constraints on light Axion-Like Particles using Chandra Transmission Grating Spectroscopy of the powerful cluster-hosted quasar H1821+643

Reference 31

Resolution
unresolved
no resolver link, observed 2026-08-07T11:22:54.514082Z

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Unavailable: canonical work link unavailable.

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Observation 2b9a0531-3728-4637-a190-4ea8f2508793 · inbound

Implications for dark energy of cosmic transparency in light of DESI data cites this paper.

Implications for dark energy of cosmic transparency in light of DESI data New constraints on light Axion-Like Particles using Chandra Transmission Grating Spectroscopy of the powerful cluster-hosted quasar H1821+643

Reference 55

Resolution
unresolved
no resolver link, observed 2026-08-06T22:08:52.497376Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

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Observation 55d6710f-e4e9-428d-8778-085f16748b4e · inbound

Ultralight dark matter detection with trapped-ion interferometry cites this paper.

Ultralight dark matter detection with trapped-ion interferometry New constraints on light Axion-Like Particles using Chandra Transmission Grating Spectroscopy of the powerful cluster-hosted quasar H1821+643

Reference 42

Resolution
verified exact
arxiv_id, observed 2026-05-19T02:26:59.621756Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.

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Observation 2f58bed4-ea21-40b2-9ecc-0e5b51fb219d · inbound

Axion lines from nuclear de-excitations in galactic stellar populations cites this paper.

Axion lines from nuclear de-excitations in galactic stellar populations New constraints on light Axion-Like Particles using Chandra Transmission Grating Spectroscopy of the powerful cluster-hosted quasar H1821+643

Reference 48

Resolution
unresolved
no resolver link, observed 2026-08-05T10:57:49.253185Z

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Unavailable: canonical work link unavailable.

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Observation 3737f0bf-7967-4ff4-ba72-9d2e7adebfea · inbound

Lights, Camera, Axion: Tracing Axions from Supernovae in the Diffuse $\gamma$-ray Sky cites this paper.

Lights, Camera, Axion: Tracing Axions from Supernovae in the Diffuse $\gamma$-ray Sky New constraints on light Axion-Like Particles using Chandra Transmission Grating Spectroscopy of the powerful cluster-hosted quasar H1821+643

Reference 155

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verified exact
arxiv_id, observed 2026-05-13T21:48:19.646033Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.

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Observation f10d8355-c7da-454f-a803-a8787977b161 · inbound

Suppressed Magnetogenesis from Ultralight Dark Matter due to Finite Conductivity cites this paper.

Suppressed Magnetogenesis from Ultralight Dark Matter due to Finite Conductivity New constraints on light Axion-Like Particles using Chandra Transmission Grating Spectroscopy of the powerful cluster-hosted quasar H1821+643

Reference 29

Resolution
verified exact
arxiv_id, observed 2026-05-10T06:21:26.730421Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.

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Observation 2ce98f3c-7be0-4fca-a54b-87327b264253 · inbound

Primordial Magnetogenesis and Gravitational Waves from ALP-assisted Phase Transition cites this paper.

Primordial Magnetogenesis and Gravitational Waves from ALP-assisted Phase Transition New constraints on light Axion-Like Particles using Chandra Transmission Grating Spectroscopy of the powerful cluster-hosted quasar H1821+643

Reference 198

Resolution
verified exact
arxiv_id, observed 2026-05-11T13:56:04.206304Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.

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Observation 6081d436-ed9d-4205-a2cf-1c9a5af50ad2 · inbound

Bounds on massive graviton-like particles from searches for axion-like particles coupling to photons cites this paper.

Bounds on massive graviton-like particles from searches for axion-like particles coupling to photons New constraints on light Axion-Like Particles using Chandra Transmission Grating Spectroscopy of the powerful cluster-hosted quasar H1821+643

Reference 105

Resolution
verified exact
arxiv_id, observed 2026-05-11T15:56:21.316010Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.

source=pdf_text observed=2026-05-09T19:03:01.217618Z digest=sha256:1b5ea3be51ac89cfd3693bc2698768b1a91d32067edd00db08733bb75bb5106c

Observation ded244b7-6a24-4e6b-b836-d8b71b2f9fb7 · inbound

A Bandpass Axion Or: How I Learned To Stop Worrying About Stars And Love The Lab cites this paper.

A Bandpass Axion Or: How I Learned To Stop Worrying About Stars And Love The Lab New constraints on light Axion-Like Particles using Chandra Transmission Grating Spectroscopy of the powerful cluster-hosted quasar H1821+643

Reference 36

Resolution
verified exact
arxiv_id, observed 2026-06-29T06:23:08.794135Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.

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Observation a5b88610-f0f9-4521-bd41-cfc4693c8ed8 · inbound

Circular polarization effects induced by photon-axion mixing in astrophysical environments cites this paper.

Circular polarization effects induced by photon-axion mixing in astrophysical environments New constraints on light Axion-Like Particles using Chandra Transmission Grating Spectroscopy of the powerful cluster-hosted quasar H1821+643

Reference 13

Resolution
verified exact
arxiv_id, observed 2026-07-03T06:27:42.405668Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.

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Observation 58cb810c-a0d5-4a33-8bc8-d1dda22182f3 · inbound

Circular polarization effects induced by photon-axion mixing in astrophysical environments cites this paper.

Circular polarization effects induced by photon-axion mixing in astrophysical environments New constraints on light Axion-Like Particles using Chandra Transmission Grating Spectroscopy of the powerful cluster-hosted quasar H1821+643

Reference 12

Resolution
unresolved
no resolver link, observed 2026-08-02T11:58:24.536983Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

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