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Paper Citation Record · LEDGER

A Sparkler in the Fireworks Galaxy: Discovery of an Ultraluminous X-ray Transient with a Strong Oxygen Line in NGC 6946

As of 23 August 2026, this Paper Citation Record lists 25 of 25 outbound references and 0 inbound Pith citation observations for arXiv:1908.08293.

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

pith.paper-citation-record.v1
1908.08293 v1

Coverage vector

measured 25 of 25 reference resolution

Typed states for the displayed outbound observations.

Source: paper_references, paper_reference_links, observed 2026-08-14T11:49:12.410427Z

measured 25 of 25 standing notices

One-hop event checks from named stored sources.

Source: scholarly_work_events, retraction_status_cache, observed 2026-08-22T06:32:14.747728+00:00

measured 0 of 0 inbound itemization

Pith citing papers itemized under the disclosed page cap.

Source: paper_references, paper_reference_links

measured 0 of 1 external citation measurements

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

Source: cited_works

Reference resolution

25 of 25 outbound references displayed

  • verified exact0
  • verified fuzzy13
  • unresolved11
  • parse uncertain0
  • malformed identifier1
  • metadata mismatch0

External citation measurements

No source-named external measurement is stored.

Outbound references

Observation 2e8986cf-24e7-4118-9f5a-7ee2898ecb3b · outbound

This paper cites BAT - The Bayesian Analysis Toolkit.

A Sparkler in the Fireworks Galaxy: Discovery of an Ultraluminous X-ray Transient with a Strong Oxygen Line in NGC 6946 BAT - The Bayesian Analysis Toolkit

Reference 1

Resolution
unresolved
no resolver link, observed 2026-08-14T11:49:12.290385Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

source=pdf_text observed=2026-08-14T11:49:12.290385Z digest=sha256:9b7b714a6bb68444d05b933e6bffefb3440cdfca1958d84c023df0ba832fae69

Observation 0a4ece41-2255-4100-b1a6-99a8e70f65b2 · outbound

This paper cites an unresolved cited work.

A Sparkler in the Fireworks Galaxy: Discovery of an Ultraluminous X-ray Transient with a Strong Oxygen Line in NGC 6946 Unresolved cited work

Reference 2

Resolution
unresolved
raw_fallback, observed 2026-08-14T11:49:12.818265Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.

source=pdf_text observed=2026-08-14T11:49:12.296933Z digest=sha256:8787424a9c2f2836d66d36f37d60652edb374f01a8402c63ecacc6286c4e3d46

Observation dc75ac11-1e6c-4068-b3f7-0846fd39811d · outbound

This paper cites an unresolved cited work.

A Sparkler in the Fireworks Galaxy: Discovery of an Ultraluminous X-ray Transient with a Strong Oxygen Line in NGC 6946 Unresolved cited work

Reference 3

Resolution
unresolved
raw_fallback, observed 2026-08-14T11:49:12.803430Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.

source=pdf_text observed=2026-08-14T11:49:12.302078Z digest=sha256:faea04d464cd8ab85f82449c39029914724d0cbdf58bbb3e12a1496769d168d4

Observation 2e524a21-04e2-4355-a735-44f57cb3a952 · outbound

This paper cites 0+0.6 −0.6 × 10−14.

A Sparkler in the Fireworks Galaxy: Discovery of an Ultraluminous X-ray Transient with a Strong Oxygen Line in NGC 6946 0+0.6 −0.6 × 10−14

Reference 4

Resolution
verified fuzzy
raw_fallback, observed 2026-08-14T11:49:12.789496Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.

source=pdf_text observed=2026-08-14T11:49:12.307028Z digest=sha256:a156f1df8c29629a8c4efb7546c5a1f658185dde0f70fcce671614460ced7459

Observation 40cd1084-4f49-42b7-9619-1cc19c923705 · outbound

This paper cites an unresolved cited work.

A Sparkler in the Fireworks Galaxy: Discovery of an Ultraluminous X-ray Transient with a Strong Oxygen Line in NGC 6946 Unresolved cited work

Reference 5

Resolution
unresolved
raw_fallback, observed 2026-08-14T11:49:12.774843Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.

source=pdf_text observed=2026-08-14T11:49:12.312588Z digest=sha256:08fe2d9d084c6c442106bec2e02456d8c9607d477798519b5e7621952468db93

Observation 8701c337-1865-4eef-ba49-827557b389a6 · outbound

This paper cites 6+0.1 −0.1 × 10−14.

A Sparkler in the Fireworks Galaxy: Discovery of an Ultraluminous X-ray Transient with a Strong Oxygen Line in NGC 6946 6+0.1 −0.1 × 10−14

Reference 6

Resolution
verified fuzzy
raw_fallback, observed 2026-08-14T11:49:12.759984Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.

source=pdf_text observed=2026-08-14T11:49:12.317398Z digest=sha256:0a67f5c710a8af7b36f7e614fce67503b5022763e3a80d3c47281e0093e7b756

Observation 2b1085ba-2918-45bf-b805-6306101a1964 · outbound

This paper cites an unresolved cited work.

A Sparkler in the Fireworks Galaxy: Discovery of an Ultraluminous X-ray Transient with a Strong Oxygen Line in NGC 6946 Unresolved cited work

Reference 7

Resolution
unresolved
raw_fallback, observed 2026-08-14T11:49:12.745321Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.

source=pdf_text observed=2026-08-14T11:49:12.323076Z digest=sha256:07d05803bbdd1680b332a1783865a8629274f1ac5320fb8cda6611ed8e5e9db2

Observation a73de153-ddc8-4f41-b0c1-bb04a6337856 · outbound

This paper cites an unresolved cited work.

A Sparkler in the Fireworks Galaxy: Discovery of an Ultraluminous X-ray Transient with a Strong Oxygen Line in NGC 6946 Unresolved cited work

Reference 8

Resolution
unresolved
raw_fallback, observed 2026-08-14T11:49:12.730769Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.

source=pdf_text observed=2026-08-14T11:49:12.328115Z digest=sha256:07ad56cdc29cf0d51ffaab36ef248bcdfcec0839a0033d3e5c7dba47bf8be153

Observation 7fe62aeb-015a-41e6-b125-374a0147150e · outbound

This paper cites an unresolved cited work.

A Sparkler in the Fireworks Galaxy: Discovery of an Ultraluminous X-ray Transient with a Strong Oxygen Line in NGC 6946 Unresolved cited work

Reference 9

Resolution
unresolved
raw_fallback, observed 2026-08-14T11:49:12.716012Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.

source=pdf_text observed=2026-08-14T11:49:12.332904Z digest=sha256:b8e1158d1d01ab64cb1a8c06c3c4c2f9aa5f0898fafd964ad232e01a0a746138

Observation d9f94cdc-32b8-43a3-96f0-b0e1a7990733 · outbound

This paper cites 6+0.1 −0.1 × 10−13.

A Sparkler in the Fireworks Galaxy: Discovery of an Ultraluminous X-ray Transient with a Strong Oxygen Line in NGC 6946 6+0.1 −0.1 × 10−13

Reference 10

Resolution
verified fuzzy
raw_fallback, observed 2026-08-14T11:49:12.701405Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.

source=pdf_text observed=2026-08-14T11:49:12.337529Z digest=sha256:9de4dc1658e13c4c1ac0edcefd4183ba5a68f4eca28849c77f9390ad415bba76

Observation 6768aaa2-d8f5-4c45-a9e6-ce2d21d6941d · outbound

This paper cites 6+0.1 −0.1 × 10−13.

A Sparkler in the Fireworks Galaxy: Discovery of an Ultraluminous X-ray Transient with a Strong Oxygen Line in NGC 6946 6+0.1 −0.1 × 10−13

Reference 11

Resolution
verified fuzzy
raw_fallback, observed 2026-08-14T11:49:12.686400Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.

source=pdf_text observed=2026-08-14T11:49:12.342269Z digest=sha256:82312fedd37de1bb3d2d1802d558720b7b0410086db71c4048a6d2476cbea550

Observation 96e84540-0bc3-495b-a997-57c570f997b2 · outbound

This paper cites 4+0.4 −0.4 × 10−13.

A Sparkler in the Fireworks Galaxy: Discovery of an Ultraluminous X-ray Transient with a Strong Oxygen Line in NGC 6946 4+0.4 −0.4 × 10−13

Reference 12

Resolution
verified fuzzy
raw_fallback, observed 2026-08-14T11:49:12.671027Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.

source=pdf_text observed=2026-08-14T11:49:12.347022Z digest=sha256:25893d4eaf78221aea2de14afbb2275b3b416d3e1f4fcb6de8c79c8fc59c8381

Observation 9ed77e7c-25fd-494b-b40f-95ecae74b7c5 · outbound

This paper cites 1+0.2 −0.2 × 10−13.

A Sparkler in the Fireworks Galaxy: Discovery of an Ultraluminous X-ray Transient with a Strong Oxygen Line in NGC 6946 1+0.2 −0.2 × 10−13

Reference 13

Resolution
verified fuzzy
raw_fallback, observed 2026-08-14T11:49:12.655912Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.

source=pdf_text observed=2026-08-14T11:49:12.351841Z digest=sha256:4ea3eeab1379a0a830125ffa2249c73cf9d636f8f7f600baffa14a7d30d0bea6

Observation e61c3107-53ce-453d-8354-4a7fd9d36d93 · outbound

This paper cites 2+0.3 −0.3 × 10−13.

A Sparkler in the Fireworks Galaxy: Discovery of an Ultraluminous X-ray Transient with a Strong Oxygen Line in NGC 6946 2+0.3 −0.3 × 10−13

Reference 14

Resolution
verified fuzzy
raw_fallback, observed 2026-08-14T11:49:12.641107Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.

source=pdf_text observed=2026-08-14T11:49:12.356488Z digest=sha256:1b8d849710e8f861c627dac883e0dbbd0f456d80c0326501a3246daa504dfe8d

Observation 098380a7-98ad-471d-9c41-486dd19e8108 · outbound

This paper cites 7+0.3 −0.3 × 10−13.

A Sparkler in the Fireworks Galaxy: Discovery of an Ultraluminous X-ray Transient with a Strong Oxygen Line in NGC 6946 7+0.3 −0.3 × 10−13

Reference 15

Resolution
verified fuzzy
raw_fallback, observed 2026-08-14T11:49:12.626544Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.

source=pdf_text observed=2026-08-14T11:49:12.362082Z digest=sha256:1531612701dc91329030c9885259109796c7172c2bb55aa65d2d22a771e9d843

Observation c44d0c6c-b31b-4d6e-ab94-9a304c428ece · outbound

This paper cites 5 and total column density NH = 4 × 1021 cm−2 (twice the Galactic line-of-sight value).

A Sparkler in the Fireworks Galaxy: Discovery of an Ultraluminous X-ray Transient with a Strong Oxygen Line in NGC 6946 5 and total column density NH = 4 × 1021 cm−2 (twice the Galactic line-of-sight value)

Reference 16

Resolution
verified fuzzy
raw_fallback, observed 2026-08-14T11:49:12.611151Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.

source=pdf_text observed=2026-08-14T11:49:12.366614Z digest=sha256:d17edda1e1f0170367040f036b17d8ff798d8039d69a5c25ca27b6193091deb2

Observation d1b55419-7375-47ce-994e-dbba62416398 · outbound

This paper cites an unresolved cited work.

A Sparkler in the Fireworks Galaxy: Discovery of an Ultraluminous X-ray Transient with a Strong Oxygen Line in NGC 6946 Unresolved cited work

Reference 17

Resolution
unresolved
raw_fallback, observed 2026-08-14T11:49:12.595892Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.

source=pdf_text observed=2026-08-14T11:49:12.371442Z digest=sha256:623b4c99af9e8932df16ab8c886ad4f8fbff9549f73264f1f31db759f34ea7d3

Observation 2152e097-341f-412e-a865-256623f2e919 · outbound

This paper cites an unresolved cited work.

A Sparkler in the Fireworks Galaxy: Discovery of an Ultraluminous X-ray Transient with a Strong Oxygen Line in NGC 6946 Unresolved cited work

Reference 18

Resolution
unresolved
raw_fallback, observed 2026-08-14T11:49:12.580614Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.

source=pdf_text observed=2026-08-14T11:49:12.376442Z digest=sha256:4727f186ca49edff9ad37d10ad1be0af9e0f390c00d35d6a0db9e02d44c9d8c4

Observation 5c84946a-cb5c-4ca6-808a-99e100185b01 · outbound

This paper cites an unresolved cited work.

A Sparkler in the Fireworks Galaxy: Discovery of an Ultraluminous X-ray Transient with a Strong Oxygen Line in NGC 6946 Unresolved cited work

Reference 19

Resolution
unresolved
raw_fallback, observed 2026-08-14T11:49:12.565192Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.

source=pdf_text observed=2026-08-14T11:49:12.381254Z digest=sha256:64893326f96b0fe4338ce273d32f5f4332f6b2afaf3b04b9aa535a17398c4cb4

Observation 0955f0cd-eb5b-4c79-8ee9-573437bdece6 · outbound

This paper cites an unresolved cited work.

A Sparkler in the Fireworks Galaxy: Discovery of an Ultraluminous X-ray Transient with a Strong Oxygen Line in NGC 6946 Unresolved cited work

Reference 20

Resolution
unresolved
raw_fallback, observed 2026-08-14T11:49:12.549624Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.

source=pdf_text observed=2026-08-14T11:49:12.385965Z digest=sha256:df464d33792d4e2b89faa58102764bef0927cd1b4f5b6f2a7cc4d023d6c11b8f

Observation c6a7857a-e253-4de3-ab95-a3859347520c · outbound

This paper cites 1.— Left panel: adaptively smoothed Chandra/ACIS image of NGC 6946, based on the stacked data from 2001 to.

A Sparkler in the Fireworks Galaxy: Discovery of an Ultraluminous X-ray Transient with a Strong Oxygen Line in NGC 6946 1.— Left panel: adaptively smoothed Chandra/ACIS image of NGC 6946, based on the stacked data from 2001 to

Reference 21

Resolution
malformed identifier
raw_fallback, observed 2026-08-14T11:49:12.532501Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.

source=pdf_text observed=2026-08-14T11:49:12.391024Z digest=sha256:cdfa02c7bbb065f4b1ef6cc7bfb40fef2143568eab597e61877c3fc1b0326c67

Observation ef7ce687-92ef-4554-85ab-71ca63ca7763 · outbound

This paper cites 1”, “2”, “3.

A Sparkler in the Fireworks Galaxy: Discovery of an Ultraluminous X-ray Transient with a Strong Oxygen Line in NGC 6946 1”, “2”, “3

Reference 24

Resolution
verified fuzzy
raw_fallback, observed 2026-08-14T11:49:12.484737Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.

source=pdf_text observed=2026-08-14T11:49:12.405416Z digest=sha256:f2e27961fce4f2f50a04922f31da00b7d15a214dda3fecd6839946e2bc5a193e

Observation f0a979fa-947d-4a96-b8cb-d69272c19d95 · outbound

This paper cites Bottom panel: 2016 HST/WFC3 image in the F814W band.

A Sparkler in the Fireworks Galaxy: Discovery of an Ultraluminous X-ray Transient with a Strong Oxygen Line in NGC 6946 Bottom panel: 2016 HST/WFC3 image in the F814W band

Reference 25

Resolution
verified fuzzy
raw_fallback, observed 2026-08-14T11:49:12.468408Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.

source=pdf_text observed=2026-08-14T11:49:12.410427Z digest=sha256:281bf07697b4343c49423c14b8bb418fd0d698a2e5c3766328094db8df88bf30

Observation 8e39146e-dda5-4603-a94c-7a09de24ac50 · outbound

This paper cites Bottom right panel: as in the bottom left panel, for th e EPIC-pn observation of 2017 June.

A Sparkler in the Fireworks Galaxy: Discovery of an Ultraluminous X-ray Transient with a Strong Oxygen Line in NGC 6946 Bottom right panel: as in the bottom left panel, for th e EPIC-pn observation of 2017 June

Reference 28

Resolution
verified fuzzy
raw_fallback, observed 2026-08-14T11:49:12.501237Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.

source=pdf_text observed=2026-08-14T11:49:12.400531Z digest=sha256:a00969c04fe0f839149d52cdeca50ab0c13818dc506a093ad09969cee98d130a

Observation b683f8a8-2e44-4873-9fc9-698825c78e9d · outbound

This paper cites 1”, “2” and “3.

A Sparkler in the Fireworks Galaxy: Discovery of an Ultraluminous X-ray Transient with a Strong Oxygen Line in NGC 6946 1”, “2” and “3

Reference 2004

Resolution
verified fuzzy
raw_fallback, observed 2026-08-14T11:49:12.516739Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.

source=pdf_text observed=2026-08-14T11:49:12.395737Z digest=sha256:c9306ba70356af04dbe641366798efa408c44f691c92c3942120e88151a3892e

Pith citing papers

No inbound Pith citation observations are available.