{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2022:D4GCL7R7I3XU2SCBDI36HYA7MT","short_pith_number":"pith:D4GCL7R7","schema_version":"1.0","canonical_sha256":"1f0c25fe3f46ef4d48411a37e3e01f64fe58eebb79372e66321c87aadcd90930","source":{"kind":"arxiv","id":"2301.00172","version":2},"attestation_state":"computed","paper":{"title":"Near-infrared evolution of the equatorial ring of SN 1987A","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA","astro-ph.HE"],"primary_cat":"astro-ph.SR","authors_text":"A. Ahola, B. Leibundgut, C. Fransson, J. Larsson, P. Lundqvist, S. Mattila, T. Kangas","submitted_at":"2022-12-31T10:29:31Z","abstract_excerpt":"We use adaptive-optics imaging and integral field spectroscopy from the Very Large Telescope, together with images from the \\emph{Hubble Space Telescope}, to study the near-infrared (NIR) evolution of the equatorial ring (ER) of SN~1987A. We study the NIR line and continuum flux and morphology over time in order to lay the groundwork for \\emph{James Webb Space Telescope} observations of the system. We also study the differences in the interacting ring structure and flux between optical, NIR and other wavelengths, and between line and continuum emission, to constrain the underlying physical pro"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2301.00172","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2022-12-31T10:29:31Z","cross_cats_sorted":["astro-ph.GA","astro-ph.HE"],"title_canon_sha256":"a05e6f07b4ff39bc3c013bc89f4d581b3a6de231aa1e2d85ac89e4c8340dc3a3","abstract_canon_sha256":"2e1b33029d8675f1f67ec500868b06f1db73ee016384da1190e3240391a6cf40"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:32:24.366736Z","signature_b64":"8qlSSeADRBkDBVRDbkyoy3uu8szFR+fAJXAfi+e4gSxcT4MKjHWFzAbC5/hCsfzXtZE3/owRHSIpt1fWVxk7Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1f0c25fe3f46ef4d48411a37e3e01f64fe58eebb79372e66321c87aadcd90930","last_reissued_at":"2026-07-05T06:32:24.366202Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:32:24.366202Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Near-infrared evolution of the equatorial ring of SN 1987A","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA","astro-ph.HE"],"primary_cat":"astro-ph.SR","authors_text":"A. Ahola, B. Leibundgut, C. Fransson, J. Larsson, P. Lundqvist, S. Mattila, T. Kangas","submitted_at":"2022-12-31T10:29:31Z","abstract_excerpt":"We use adaptive-optics imaging and integral field spectroscopy from the Very Large Telescope, together with images from the \\emph{Hubble Space Telescope}, to study the near-infrared (NIR) evolution of the equatorial ring (ER) of SN~1987A. We study the NIR line and continuum flux and morphology over time in order to lay the groundwork for \\emph{James Webb Space Telescope} observations of the system. We also study the differences in the interacting ring structure and flux between optical, NIR and other wavelengths, and between line and continuum emission, to constrain the underlying physical pro"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2301.00172","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2301.00172/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"2301.00172","created_at":"2026-07-05T06:32:24.366255+00:00"},{"alias_kind":"arxiv_version","alias_value":"2301.00172v2","created_at":"2026-07-05T06:32:24.366255+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2301.00172","created_at":"2026-07-05T06:32:24.366255+00:00"},{"alias_kind":"pith_short_12","alias_value":"D4GCL7R7I3XU","created_at":"2026-07-05T06:32:24.366255+00:00"},{"alias_kind":"pith_short_16","alias_value":"D4GCL7R7I3XU2SCB","created_at":"2026-07-05T06:32:24.366255+00:00"},{"alias_kind":"pith_short_8","alias_value":"D4GCL7R7","created_at":"2026-07-05T06:32:24.366255+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/D4GCL7R7I3XU2SCBDI36HYA7MT","json":"https://pith.science/pith/D4GCL7R7I3XU2SCBDI36HYA7MT.json","graph_json":"https://pith.science/api/pith-number/D4GCL7R7I3XU2SCBDI36HYA7MT/graph.json","events_json":"https://pith.science/api/pith-number/D4GCL7R7I3XU2SCBDI36HYA7MT/events.json","paper":"https://pith.science/paper/D4GCL7R7"},"agent_actions":{"view_html":"https://pith.science/pith/D4GCL7R7I3XU2SCBDI36HYA7MT","download_json":"https://pith.science/pith/D4GCL7R7I3XU2SCBDI36HYA7MT.json","view_paper":"https://pith.science/paper/D4GCL7R7","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2301.00172&json=true","fetch_graph":"https://pith.science/api/pith-number/D4GCL7R7I3XU2SCBDI36HYA7MT/graph.json","fetch_events":"https://pith.science/api/pith-number/D4GCL7R7I3XU2SCBDI36HYA7MT/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/D4GCL7R7I3XU2SCBDI36HYA7MT/action/timestamp_anchor","attest_storage":"https://pith.science/pith/D4GCL7R7I3XU2SCBDI36HYA7MT/action/storage_attestation","attest_author":"https://pith.science/pith/D4GCL7R7I3XU2SCBDI36HYA7MT/action/author_attestation","sign_citation":"https://pith.science/pith/D4GCL7R7I3XU2SCBDI36HYA7MT/action/citation_signature","submit_replication":"https://pith.science/pith/D4GCL7R7I3XU2SCBDI36HYA7MT/action/replication_record"}},"created_at":"2026-07-05T06:32:24.366255+00:00","updated_at":"2026-07-05T06:32:24.366255+00:00"}