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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 11 August 2026, this Paper Citation Record lists 0 of 0 outbound references and 13 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

Coverage vector

measured 0 of 0 reference resolution

Typed states for the displayed outbound observations.

Source: paper_references, paper_reference_links

measured 13 of 13 standing notices

One-hop event checks from named stored sources.

Source: scholarly_work_events, retraction_status_cache, observed 2026-08-11T06:34:44.6726+00:00

measured 13 of 13 inbound itemization

Pith citing papers itemized under the disclosed page cap.

Source: paper_references, paper_reference_links, observed 2026-08-11T13:29:11.015986Z

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

Reference resolution

0 of 0 outbound references displayed

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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 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

Source-reported events for the cited work

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 2026-08-11T06:34:44.6726+00:00.

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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

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

source=pdf_text observed=2026-08-07T11:22:54.514082Z digest=sha256:0e848aa44d02b314daedc82e8b183743c09a1dbdc0e5e7cff768aaee63c33906

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.

source=pdf_text observed=2026-08-06T22:08:52.497376Z digest=sha256:8f8a0f6028b5adb83cba79a6442cc92d7ed44f0bc0d816639fd53737308c98a9

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 2026-08-11T06:34:44.6726+00:00.

source=pdf_text observed=2026-05-19T02:24:38.629048Z digest=sha256:42a1a7ef43035f1c0bc36d398840add9d35dad8863ccdf1dd2f2051a1c75d6ba

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

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

source=pdf_text observed=2026-08-05T10:57:49.253185Z digest=sha256:772c2ee15567a99dac60e5bdf9a27b126054f8fc9fe95b8746d8594cd04df560

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

Resolution
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 2026-08-11T06:34:44.6726+00:00.

source=pdf_text observed=2026-05-13T21:43:35.782259Z digest=sha256:8fd70cf97c9d902385ab88193cbe45a0f531abc0250b44c482dd25ee63cae1a5

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 2026-08-11T06:34:44.6726+00:00.

source=pdf_text observed=2026-05-10T06:20:54.003774Z digest=sha256:1be1a672c4547c2d3953b86d5dc3dc847dcfe3696702b155f95572682587699f

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 2026-08-11T06:34:44.6726+00:00.

source=pdf_text observed=2026-05-09T23:54:19.807809Z digest=sha256:53d9ff279f73f6533ec8545a0a8c7b351e692440c5b61d5e0704048d93117ea0

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 2026-08-11T06:34:44.6726+00:00.

source=pdf_text observed=2026-05-09T19:03:01.217618Z digest=sha256:b77717d18e5806b78215018328bc34cc06ffc0ec8bbc8619b7fbab481ed3a5d2

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 2026-08-11T06:34:44.6726+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 2026-08-11T06:34:44.6726+00:00.

source=pdf_text observed=2026-06-27T12:40:33.657987Z digest=sha256:c944c68d56164f1b05c91e591a71fcbe0e089f226859563751ccb28579dd2292

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.

source=pdf_text observed=2026-08-02T11:58:24.536983Z digest=sha256:02359922f76a8fe2b803ad95949949fb10ee49bceea01ff362f76d060b49ce0b