Paper Citation Record · LEDGER

Changing-look Seyfert galaxies with optical linear polarization measurements

As of 21 August 2026, this Paper Citation Record lists 47 of 47 outbound references and 2 inbound Pith citation observations for arXiv:1909.02801.

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

pith.paper-citation-record.v1
1909.02801 v1

Coverage vector

measured 47 of 47 reference resolution

Typed states for the displayed outbound observations.

Source: paper_references, paper_reference_links, observed 2026-08-14T04:41:54.334533Z

measured 49 of 49 standing notices

One-hop event checks from named stored sources.

Source: scholarly_work_events, retraction_status_cache, observed 2026-08-20T06:33:59.587034+00:00

measured 2 of 2 inbound itemization

Pith citing papers itemized under the disclosed page cap.

Source: paper_references, paper_reference_links, observed 2026-08-10T19:55:49.236374Z

measured 0 of 1 external citation measurements

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

Source: arxiv_reference, observed 2026-07-03T21:28:59.143827Z

Reference resolution

47 of 47 outbound references displayed

verified exact0
verified fuzzy32
unresolved15
parse uncertain0
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External citation measurements

No source-named external measurement is stored.

Outbound references

Observation 6281b27d-6e6c-4ab9-a243-048de54e11a4 · outbound

This paper cites L., Popovi´ c, L.ˇC., & Shapovalova, A.

Changing-look Seyfert galaxies with optical linear polarization measurements L., Popovi´ c, L.ˇC., & Shapovalova, A

Reference 1

Resolution: verified fuzzy; raw_fallback, observed 2026-08-14T04:41:58.050118Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation 0c04f84b-003c-4979-8494-46ff0e2e9a85 · outbound

This paper cites L., Popovi´ c, L.ˇC., Shapovalova, A.

Changing-look Seyfert galaxies with optical linear polarization measurements L., Popovi´ c, L.ˇC., Shapovalova, A

Reference 2

Resolution: verified fuzzy; raw_fallback, observed 2026-08-14T04:41:57.988166Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation 778d59f1-fd35-4f6b-951e-97ec78cb904e · outbound

This paper cites L., Shapovalova, A.

Changing-look Seyfert galaxies with optical linear polarization measurements L., Shapovalova, A

Reference 3

Resolution: verified fuzzy; raw_fallback, observed 2026-08-14T04:41:57.910077Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation 3dae71dc-5526-4262-b564-30178c78faf2 · outbound

This paper cites M., Fosbury, R.

Changing-look Seyfert galaxies with optical linear polarization measurements M., Fosbury, R

Reference 4

Resolution: verified fuzzy; raw_fallback, observed 2026-08-14T04:41:57.824969Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation a6f6ceda-d43e-42cf-8bb8-c5bec112ed75 · outbound

This paper cites 1993, ARA&A, 31, 473.

Changing-look Seyfert galaxies with optical linear polarization measurements 1993, ARA&A, 31, 473

Reference 5

Resolution: unresolved; no resolver link, observed 2026-08-14T04:41:52.864832Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 5f43eb3e-5831-4943-aa0d-0c69f506a4b1 · outbound

This paper cites an unresolved cited work.

Changing-look Seyfert galaxies with optical linear polarization measurements Unresolved cited work

Reference 6

Resolution: unresolved; no resolver link, observed 2026-08-14T04:41:52.916135Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 565655fb-7aaf-4d3b-9bde-c87ae5cedf39 · outbound

This paper cites an unresolved cited work.

Changing-look Seyfert galaxies with optical linear polarization measurements Unresolved cited work

Reference 7

Resolution: unresolved; raw_fallback, observed 2026-08-14T04:41:57.679169Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation ba0b2384-1812-4ad5-85c9-ca3a8c0e158c · outbound

This paper cites D., Rudy, R.

Changing-look Seyfert galaxies with optical linear polarization measurements D., Rudy, R

Reference 8

Resolution: verified fuzzy; raw_fallback, observed 2026-08-14T04:41:57.607929Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation 3259370b-e135-4931-998d-5230a1a78efd · outbound

This paper cites D., De Rosa, G., Croxall, K., et al.

Changing-look Seyfert galaxies with optical linear polarization measurements D., De Rosa, G., Croxall, K., et al

Reference 9

Resolution: unresolved; no resolver link, observed 2026-08-14T04:41:53.074748Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation f4b5c70a-1bff-4ca4-930b-cc9337f90298 · outbound

This paper cites 2012, ApJ, 747, L33.

Changing-look Seyfert galaxies with optical linear polarization measurements 2012, ApJ, 747, L33

Reference 10

Resolution: verified fuzzy; raw_fallback, observed 2026-08-14T04:41:57.491452Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation 75706247-10ef-4dc0-90b2-77611bf441bb · outbound

This paper cites C., & Trump, J.

Changing-look Seyfert galaxies with optical linear polarization measurements C., & Trump, J

Reference 11

Resolution: verified fuzzy; raw_fallback, observed 2026-08-14T04:41:57.435827Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation c1d36ad2-d1dc-4ca2-8b35-0aeb6c196353 · outbound

This paper cites 1999, Optical polarimetry studies of Seyfert gal axies.

Changing-look Seyfert galaxies with optical linear polarization measurements 1999, Optical polarimetry studies of Seyfert gal axies

Reference 12

Resolution: verified fuzzy; raw_fallback, observed 2026-08-14T04:41:57.354699Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation 16c4dba0-5baa-412d-a494-f021dafce40d · outbound

This paper cites an unresolved cited work.

Changing-look Seyfert galaxies with optical linear polarization measurements Unresolved cited work

Reference 13

Resolution: unresolved; no resolver link, observed 2026-08-14T04:41:53.294819Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 353dc4c9-b5ef-494a-a78c-de1c82d1ca3e · outbound

This paper cites M., Goosmann, R.

Changing-look Seyfert galaxies with optical linear polarization measurements M., Goosmann, R

Reference 14

Resolution: verified fuzzy; raw_fallback, observed 2026-08-14T04:41:57.254846Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation 11b929e0-1433-487e-bf01-7c4595d2d064 · outbound

This paper cites an unresolved cited work.

Changing-look Seyfert galaxies with optical linear polarization measurements Unresolved cited work

Reference 15

Resolution: unresolved; no resolver link, observed 2026-08-14T04:41:53.404646Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 83611d94-cf27-4444-89bf-209b86ccd2a1 · outbound

This paper cites an unresolved cited work.

Changing-look Seyfert galaxies with optical linear polarization measurements Unresolved cited work

Reference 16

Resolution: unresolved; raw_fallback, observed 2026-08-14T04:41:57.154753Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation 2ff938f0-67db-4f28-8093-ba46b88b6d1c · outbound

This paper cites A., Ti ﬀt, W.

Changing-look Seyfert galaxies with optical linear polarization measurements A., Ti ﬀt, W

Reference 17

Resolution: verified fuzzy; raw_fallback, observed 2026-08-14T04:41:57.094748Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation c72017c2-45ef-4b77-94eb-944f4e1221ba · outbound

This paper cites D., Lawrence, C.

Changing-look Seyfert galaxies with optical linear polarization measurements D., Lawrence, C

Reference 18

Resolution: verified fuzzy; raw_fallback, observed 2026-08-14T04:41:56.994754Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation c0cdef7e-bd10-4053-9f86-be70df19d301 · outbound

This paper cites Y ., Asatrian, N.

Changing-look Seyfert galaxies with optical linear polarization measurements Y ., Asatrian, N

Reference 19

Resolution: verified fuzzy; raw_fallback, observed 2026-08-14T04:41:56.947095Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation dc642f83-85ba-4b48-8996-d0dff30d8d57 · outbound

This paper cites an unresolved cited work.

Changing-look Seyfert galaxies with optical linear polarization measurements Unresolved cited work

Reference 20

Resolution: unresolved; raw_fallback, observed 2026-08-14T04:41:56.874747Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation 421e6154-b103-4a78-a2c7-2d1ae0d723af · outbound

This paper cites 2000, A&A, 361, 901.

Changing-look Seyfert galaxies with optical linear polarization measurements 2000, A&A, 361, 901

Reference 21

Resolution: verified fuzzy; raw_fallback, observed 2026-08-14T04:41:56.814892Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation 22623f9f-044f-4e21-be1e-4af3b0288f30 · outbound

This paper cites & Fricke, K.

Changing-look Seyfert galaxies with optical linear polarization measurements & Fricke, K

Reference 22

Resolution: verified fuzzy; raw_fallback, observed 2026-08-14T04:41:56.748751Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation 16f00227-f52b-4235-855c-affa7202888e · outbound

This paper cites G., MacLeod, C., et al.

Changing-look Seyfert galaxies with optical linear polarization measurements G., MacLeod, C., et al

Reference 23

Resolution: verified fuzzy; raw_fallback, observed 2026-08-14T04:41:56.645160Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation f64ce7dd-8797-431f-b741-610091cd2944 · outbound

This paper cites & de Ruiter, H.

Changing-look Seyfert galaxies with optical linear polarization measurements & de Ruiter, H

Reference 24

Resolution: verified fuzzy; raw_fallback, observed 2026-08-14T04:41:56.567137Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation f416bbcf-ccae-44a2-b3c0-23f65835cddc · outbound

This paper cites F., Pronik, V.

Changing-look Seyfert galaxies with optical linear polarization measurements F., Pronik, V

Reference 25

Resolution: verified fuzzy; raw_fallback, observed 2026-08-14T04:41:56.521280Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation 6b79d1f8-9859-4966-88b0-f8cf80806c67 · outbound

This paper cites W., & Petrucci, P.

Changing-look Seyfert galaxies with optical linear polarization measurements W., & Petrucci, P

Reference 26

Resolution: verified fuzzy; raw_fallback, observed 2026-08-14T04:41:56.488258Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation 6ca779bf-5502-4033-9762-c7c10b811886 · outbound

This paper cites an unresolved cited work.

Changing-look Seyfert galaxies with optical linear polarization measurements Unresolved cited work

Reference 27

Resolution: unresolved; no resolver link, observed 2026-08-14T04:41:53.704434Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 45217b35-41db-4694-a5fc-33dfdc37a4f0 · outbound

This paper cites G., Thompson, I.

Changing-look Seyfert galaxies with optical linear polarization measurements G., Thompson, I

Reference 28

Resolution: verified fuzzy; raw_fallback, observed 2026-08-14T04:41:56.376773Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation 8fdb2c39-a430-44a3-a7a5-6d4481f59f0e · outbound

This paper cites E., Husemann, B., Croom, S.

Changing-look Seyfert galaxies with optical linear polarization measurements E., Husemann, B., Croom, S

Reference 29

Resolution: verified fuzzy; raw_fallback, observed 2026-08-14T04:41:56.305612Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation 596e72c5-e9a2-496b-b2fd-6a5d3452091e · outbound

This paper cites C., Halpern, J.

Changing-look Seyfert galaxies with optical linear polarization measurements C., Halpern, J

Reference 30

Resolution: verified fuzzy; raw_fallback, observed 2026-08-14T04:41:56.134749Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation 295bd6c7-dd30-4b95-aa28-513641f47ed7 · outbound

This paper cites & Done, C.

Changing-look Seyfert galaxies with optical linear polarization measurements & Done, C

Reference 31

Resolution: unresolved; no resolver link, observed 2026-08-14T04:41:53.800538Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation ac2cf0da-f396-4c42-a1d7-2c7048060766 · outbound

This paper cites L., Gaskell, C.

Changing-look Seyfert galaxies with optical linear polarization measurements L., Gaskell, C

Reference 32

Resolution: verified fuzzy; raw_fallback, observed 2026-08-14T04:41:55.874836Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation 584701d1-5fce-4b70-84ec-12bb5e36ea55 · outbound

This paper cites L., Winkler, H., Tsygankov, S.

Changing-look Seyfert galaxies with optical linear polarization measurements L., Winkler, H., Tsygankov, S

Reference 33

Resolution: unresolved; no resolver link, observed 2026-08-14T04:41:53.845487Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 614d8ce0-7e44-4fb3-a855-8cf992260dff · outbound

This paper cites & Gerola, H.

Changing-look Seyfert galaxies with optical linear polarization measurements & Gerola, H

Reference 34

Resolution: verified fuzzy; raw_fallback, observed 2026-08-14T04:41:55.763559Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation f30ba9d3-7779-4d24-901a-d3156ba4dd02 · outbound

This paper cites an unresolved cited work.

Changing-look Seyfert galaxies with optical linear polarization measurements Unresolved cited work

Reference 35

Resolution: unresolved; no resolver link, observed 2026-08-14T04:41:53.890460Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 056dc9b6-a141-475b-9b8c-ac02c3298eb9 · outbound

This paper cites I., V estergaard, M., Koay, J.

Changing-look Seyfert galaxies with optical linear polarization measurements I., V estergaard, M., Koay, J

Reference 36

Resolution: verified fuzzy; raw_fallback, observed 2026-08-14T04:41:55.667047Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation 375bdd75-9ecc-445c-8b05-ffe1cba0717e · outbound

This paper cites an unresolved cited work.

Changing-look Seyfert galaxies with optical linear polarization measurements Unresolved cited work

Reference 37

Resolution: unresolved; raw_fallback, observed 2026-08-14T04:41:55.586067Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation e2910202-6ca0-4b37-9a6d-71dd6a9eae4d · outbound

This paper cites G., Nazarov, S.

Changing-look Seyfert galaxies with optical linear polarization measurements G., Nazarov, S

Reference 38

Resolution: verified fuzzy; raw_fallback, observed 2026-08-14T04:41:55.484069Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation cb8976e2-11f8-46b4-8c2d-92d45e56a57f · outbound

This paper cites I., Popovi´ c, , L.ˇC., et al.

Changing-look Seyfert galaxies with optical linear polarization measurements I., Popovi´ c, , L.ˇC., et al

Reference 39

Resolution: unresolved; no resolver link, observed 2026-08-14T04:41:54.010938Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 9ab6d940-2cc3-4be5-8d48-20a2fe605544 · outbound

This paper cites I., Popovi´ c, L.ˇC., Collin, S., et al.

Changing-look Seyfert galaxies with optical linear polarization measurements I., Popovi´ c, L.ˇC., Collin, S., et al

Reference 40

Resolution: verified fuzzy; raw_fallback, observed 2026-08-14T04:41:55.294751Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation 686e510c-e4ca-459f-a6b3-468a3474c71c · outbound

This paper cites J., Prieto, J.

Changing-look Seyfert galaxies with optical linear polarization measurements J., Prieto, J

Reference 41

Resolution: verified fuzzy; raw_fallback, observed 2026-08-14T04:41:55.123822Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation 4ea53909-cf49-4df6-b74a-0a8e5c147a13 · outbound

This paper cites E., Robinson, A., Alexander, D.

Changing-look Seyfert galaxies with optical linear polarization measurements E., Robinson, A., Alexander, D

Reference 42

Resolution: verified fuzzy; raw_fallback, observed 2026-08-14T04:41:54.974821Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation fd7693e7-f622-4c8e-a61a-a054bd7efc9c · outbound

This paper cites S., Schmidt, G.

Changing-look Seyfert galaxies with optical linear polarization measurements S., Schmidt, G

Reference 43

Resolution: verified fuzzy; raw_fallback, observed 2026-08-14T04:41:54.841518Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation cbac018c-90ac-48a6-b717-ad5526c48fb9 · outbound

This paper cites an unresolved cited work.

Changing-look Seyfert galaxies with optical linear polarization measurements Unresolved cited work

Reference 44

Resolution: unresolved; no resolver link, observed 2026-08-14T04:41:54.234746Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 02be0d40-90ee-4f8a-88c7-13bdaad23565 · outbound

This paper cites D., Osterbrock, D.

Changing-look Seyfert galaxies with optical linear polarization measurements D., Osterbrock, D

Reference 45

Resolution: verified fuzzy; raw_fallback, observed 2026-08-14T04:41:54.691653Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation acc1dd4e-69d9-4b76-af06-3fa172ceb7f8 · outbound

This paper cites V ., Blades, J.

Changing-look Seyfert galaxies with optical linear polarization measurements V ., Blades, J

Reference 46

Resolution: verified fuzzy; raw_fallback, observed 2026-08-14T04:41:54.594479Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation 03ed4fe5-bc2a-46d3-b0bb-a50c2177bee9 · outbound

This paper cites J., Wills, D., & Breger, M.

Changing-look Seyfert galaxies with optical linear polarization measurements J., Wills, D., & Breger, M

Reference 47

Resolution: verified fuzzy; raw_fallback, observed 2026-08-14T04:41:54.493317Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Pith citing papers

Observation f3e60555-b12f-4e43-8ac1-66ad4d22fc3d · inbound

The NuSTAR view of five changing-look active galactic nuclei cites this paper.

The NuSTAR view of five changing-look active galactic nuclei Changing-look Seyfert galaxies with optical linear polarization measurements

Reference 50

Resolution: unresolved; no resolver link, observed 2026-08-10T19:55:49.236374Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation ce420cd7-522f-4d30-a39a-84522fcfd92e · inbound

OQ~208: A New Fe~II Changing-look Active Galactic Nucleus and Implications for the Nature of the Changing-look Phenomenon cites this paper.

OQ~208: A New Fe~II Changing-look Active Galactic Nucleus and Implications for the Nature of the Changing-look Phenomenon Changing-look Seyfert galaxies with optical linear polarization measurements

Reference 182

Resolution: verified exact; arxiv_id, observed 2026-07-03T21:28:59.145627Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.