{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:Y4VHYIYL22CQBEWYY3ONQZMQR5","short_pith_number":"pith:Y4VHYIYL","canonical_record":{"source":{"id":"2210.14076","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-10-25T14:57:41Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"c28e6b1304e16afce77457feb7fb40177047ac08f961e33b270c2f7812093139","abstract_canon_sha256":"c7f8808059a7a1a01838b4bd2a4e5017573ba65b0870368bdd4cd7b99c800199"},"schema_version":"1.0"},"canonical_sha256":"c72a7c230bd6850092d8c6dcd865908f4ed22d62a266205ea852c54d3d6f2fbe","source":{"kind":"arxiv","id":"2210.14076","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2210.14076","created_at":"2026-07-05T05:31:57Z"},{"alias_kind":"arxiv_version","alias_value":"2210.14076v2","created_at":"2026-07-05T05:31:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2210.14076","created_at":"2026-07-05T05:31:57Z"},{"alias_kind":"pith_short_12","alias_value":"Y4VHYIYL22CQ","created_at":"2026-07-05T05:31:57Z"},{"alias_kind":"pith_short_16","alias_value":"Y4VHYIYL22CQBEWY","created_at":"2026-07-05T05:31:57Z"},{"alias_kind":"pith_short_8","alias_value":"Y4VHYIYL","created_at":"2026-07-05T05:31:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:Y4VHYIYL22CQBEWYY3ONQZMQR5","target":"record","payload":{"canonical_record":{"source":{"id":"2210.14076","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-10-25T14:57:41Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"c28e6b1304e16afce77457feb7fb40177047ac08f961e33b270c2f7812093139","abstract_canon_sha256":"c7f8808059a7a1a01838b4bd2a4e5017573ba65b0870368bdd4cd7b99c800199"},"schema_version":"1.0"},"canonical_sha256":"c72a7c230bd6850092d8c6dcd865908f4ed22d62a266205ea852c54d3d6f2fbe","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:31:57.406934Z","signature_b64":"C+jmTniPNQjPf+E3Etv5U8K6m3V3c/k/IdUpvBnXcN634Vq7zo3sPlwl1Ptv5hUhlrOgRnLYdKwnX9CTkuRUDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c72a7c230bd6850092d8c6dcd865908f4ed22d62a266205ea852c54d3d6f2fbe","last_reissued_at":"2026-07-05T05:31:57.406454Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:31:57.406454Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2210.14076","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T05:31:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UQEaM0Hv8aNE3NFyB+hJG3tiFe7Wuv5kmwTkP5PmsGnBQxXB7V1IzERDo27ezlpIv4VDFbCOLtRKUh1r56EyDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T03:09:18.208505Z"},"content_sha256":"200b15b3a5e7f3f45589066b8d68e5e1e96f196bdf102b24ac182f864b80921b","schema_version":"1.0","event_id":"sha256:200b15b3a5e7f3f45589066b8d68e5e1e96f196bdf102b24ac182f864b80921b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:Y4VHYIYL22CQBEWYY3ONQZMQR5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A long life of excess: The interacting transient SN 2017hcc","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"(10) INAF - Osservatorio astronomico di Brera, (11) University of Hawaii, (12) Stockholm University, (13) INAF - Capodimonte Astronomical Observatory, 14, (14) INFN-Napoli, 15), (15) ICRANet, (16) Institut d'Astrophysique de Paris, 17), (17) Institute of Space Sciences, 18), (18) Institut d'Estudis Espacials de Catalunya, (19) Centro de Estudios de F\\'isica del Cosmos de Arag\\'on, (20) University of Warsaw, (21) Center for Astrophysics | Harvard & Smithsonian, 22, (22) The NSF AI Institute for Artificial Intelligence, 23, (23) Las Cumbres Observatory, 24), (24) University of California, (25) Cardiff University, (26) DTU Space, (27) Birmingham Institute for Gravitational Wave Astronomy, (28) Universidad Andres Bello, 29, (29) Millennium Institute of Astrophysics, (2) University College Dublin, 3), (30) Florida State University, (31) Queen's University Belfast), (3) INAF - Osservatorio Astronomico di Padova, 4), (4) Finnish Centre for Astronomy with ESO, 5), (5) European University Cyprus, 6, (6) Cosmic Dawn Center, 7), (7) Niels Bohr Institute, (8) European Southern Observatory, (9) George P., A. Pastorello (3), A. Reguitti (28, Astronomy, Barcelona, C. Inserra (25), C.P. Guti\\'errez (1, Cynthia Woods Mitchell Institute for Fundamental Physics & Astronomy, D. Hiramatsu (21, D.R. Young (31) ((1) University of Turku, E. Kankare (1), F.J. Galindo-Guil (19), Fundamental Interactions, G. Leloudas (26), H. Kuncarayakti (1), J.P. Anderson (8), K.C. Chambers (11), L. Galbany (17, L. Tartaglia (3), M. Della Valle (13, M. Dennefeld (16), M. Fraser (2), M. Gromadzki (20), M. Nicholl (27), M. Shahbandeh (30), N. Elias-Rosa (3, P.J. Brown (9), R. Kotak (1), Santa Barbara, S. Benetti (3), S. Campana (10), School of Physics, S.J. Brennan (2), S.J. Smartt (31), S. Mattila (1, S. Moran (1), T.E. M\\\"uller-Bravo (17), T.M. Reynolds (1, T.-W. Chen (12)","submitted_at":"2022-10-25T14:57:41Z","abstract_excerpt":"In this study we present the results of a five-year follow-up campaign of the long-lived type IIn supernova SN 2017hcc, found in a spiral dwarf host of near-solar metallicity. The long rise time (57 $\\pm$ 2 days, ATLAS $o$ band) and high luminosity (peaking at $-$20.78 $\\pm$ 0.01 mag in the ATLAS $o$ band) point towards an interaction of massive ejecta with massive and dense circumstellar material (CSM). The evolution of SN 2017hcc is slow, both spectroscopically and photometrically, reminiscent of the long-lived type IIn, SN 2010jl. An infrared (IR) excess was apparent soon after the peak, an"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2210.14076","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/2210.14076/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T05:31:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"v00TRtDATu6eWl9RwNjUrIZlfaQ//OOWzNvbacWNlUzBfzy3shel4m0jr1CTHN3EUaLBmhokfzXZlxf+bpGuAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T03:09:18.209116Z"},"content_sha256":"d1e2241873315b62ca1fbd0a84003fe25935e9bc8c2a0ae90a2cb30e2c76caee","schema_version":"1.0","event_id":"sha256:d1e2241873315b62ca1fbd0a84003fe25935e9bc8c2a0ae90a2cb30e2c76caee"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Y4VHYIYL22CQBEWYY3ONQZMQR5/bundle.json","state_url":"https://pith.science/pith/Y4VHYIYL22CQBEWYY3ONQZMQR5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Y4VHYIYL22CQBEWYY3ONQZMQR5/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-06T03:09:18Z","links":{"resolver":"https://pith.science/pith/Y4VHYIYL22CQBEWYY3ONQZMQR5","bundle":"https://pith.science/pith/Y4VHYIYL22CQBEWYY3ONQZMQR5/bundle.json","state":"https://pith.science/pith/Y4VHYIYL22CQBEWYY3ONQZMQR5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Y4VHYIYL22CQBEWYY3ONQZMQR5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:Y4VHYIYL22CQBEWYY3ONQZMQR5","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"c7f8808059a7a1a01838b4bd2a4e5017573ba65b0870368bdd4cd7b99c800199","cross_cats_sorted":["astro-ph.SR"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-10-25T14:57:41Z","title_canon_sha256":"c28e6b1304e16afce77457feb7fb40177047ac08f961e33b270c2f7812093139"},"schema_version":"1.0","source":{"id":"2210.14076","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2210.14076","created_at":"2026-07-05T05:31:57Z"},{"alias_kind":"arxiv_version","alias_value":"2210.14076v2","created_at":"2026-07-05T05:31:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2210.14076","created_at":"2026-07-05T05:31:57Z"},{"alias_kind":"pith_short_12","alias_value":"Y4VHYIYL22CQ","created_at":"2026-07-05T05:31:57Z"},{"alias_kind":"pith_short_16","alias_value":"Y4VHYIYL22CQBEWY","created_at":"2026-07-05T05:31:57Z"},{"alias_kind":"pith_short_8","alias_value":"Y4VHYIYL","created_at":"2026-07-05T05:31:57Z"}],"graph_snapshots":[{"event_id":"sha256:d1e2241873315b62ca1fbd0a84003fe25935e9bc8c2a0ae90a2cb30e2c76caee","target":"graph","created_at":"2026-07-05T05:31:57Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2210.14076/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In this study we present the results of a five-year follow-up campaign of the long-lived type IIn supernova SN 2017hcc, found in a spiral dwarf host of near-solar metallicity. The long rise time (57 $\\pm$ 2 days, ATLAS $o$ band) and high luminosity (peaking at $-$20.78 $\\pm$ 0.01 mag in the ATLAS $o$ band) point towards an interaction of massive ejecta with massive and dense circumstellar material (CSM). The evolution of SN 2017hcc is slow, both spectroscopically and photometrically, reminiscent of the long-lived type IIn, SN 2010jl. An infrared (IR) excess was apparent soon after the peak, an","authors_text":"(10) INAF - Osservatorio astronomico di Brera, (11) University of Hawaii, (12) Stockholm University, (13) INAF - Capodimonte Astronomical Observatory, 14, (14) INFN-Napoli, 15), (15) ICRANet, (16) Institut d'Astrophysique de Paris, 17), (17) Institute of Space Sciences, 18), (18) Institut d'Estudis Espacials de Catalunya, (19) Centro de Estudios de F\\'isica del Cosmos de Arag\\'on, (20) University of Warsaw, (21) Center for Astrophysics | Harvard & Smithsonian, 22, (22) The NSF AI Institute for Artificial Intelligence, 23, (23) Las Cumbres Observatory, 24), (24) University of California, (25) Cardiff University, (26) DTU Space, (27) Birmingham Institute for Gravitational Wave Astronomy, (28) Universidad Andres Bello, 29, (29) Millennium Institute of Astrophysics, (2) University College Dublin, 3), (30) Florida State University, (31) Queen's University Belfast), (3) INAF - Osservatorio Astronomico di Padova, 4), (4) Finnish Centre for Astronomy with ESO, 5), (5) European University Cyprus, 6, (6) Cosmic Dawn Center, 7), (7) Niels Bohr Institute, (8) European Southern Observatory, (9) George P., A. Pastorello (3), A. Reguitti (28, Astronomy, Barcelona, C. Inserra (25), C.P. Guti\\'errez (1, Cynthia Woods Mitchell Institute for Fundamental Physics & Astronomy, D. Hiramatsu (21, D.R. Young (31) ((1) University of Turku, E. Kankare (1), F.J. Galindo-Guil (19), Fundamental Interactions, G. Leloudas (26), H. Kuncarayakti (1), J.P. Anderson (8), K.C. Chambers (11), L. Galbany (17, L. Tartaglia (3), M. Della Valle (13, M. Dennefeld (16), M. Fraser (2), M. Gromadzki (20), M. Nicholl (27), M. Shahbandeh (30), N. Elias-Rosa (3, P.J. Brown (9), R. Kotak (1), Santa Barbara, S. Benetti (3), S. Campana (10), School of Physics, S.J. Brennan (2), S.J. Smartt (31), S. Mattila (1, S. Moran (1), T.E. M\\\"uller-Bravo (17), T.M. Reynolds (1, T.-W. Chen (12)","cross_cats":["astro-ph.SR"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-10-25T14:57:41Z","title":"A long life of excess: The interacting transient SN 2017hcc"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2210.14076","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:200b15b3a5e7f3f45589066b8d68e5e1e96f196bdf102b24ac182f864b80921b","target":"record","created_at":"2026-07-05T05:31:57Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"c7f8808059a7a1a01838b4bd2a4e5017573ba65b0870368bdd4cd7b99c800199","cross_cats_sorted":["astro-ph.SR"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-10-25T14:57:41Z","title_canon_sha256":"c28e6b1304e16afce77457feb7fb40177047ac08f961e33b270c2f7812093139"},"schema_version":"1.0","source":{"id":"2210.14076","kind":"arxiv","version":2}},"canonical_sha256":"c72a7c230bd6850092d8c6dcd865908f4ed22d62a266205ea852c54d3d6f2fbe","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c72a7c230bd6850092d8c6dcd865908f4ed22d62a266205ea852c54d3d6f2fbe","first_computed_at":"2026-07-05T05:31:57.406454Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:31:57.406454Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"C+jmTniPNQjPf+E3Etv5U8K6m3V3c/k/IdUpvBnXcN634Vq7zo3sPlwl1Ptv5hUhlrOgRnLYdKwnX9CTkuRUDw==","signature_status":"signed_v1","signed_at":"2026-07-05T05:31:57.406934Z","signed_message":"canonical_sha256_bytes"},"source_id":"2210.14076","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:200b15b3a5e7f3f45589066b8d68e5e1e96f196bdf102b24ac182f864b80921b","sha256:d1e2241873315b62ca1fbd0a84003fe25935e9bc8c2a0ae90a2cb30e2c76caee"],"state_sha256":"90effad41448ebaec278499cc723e9684dce33c2c44589d874ad80bdec611d6b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QUAFZozdFQHfbK8a5UE+IsWz+1JjRxsyLSBFT5lxxfuDua0z7jaN20rTdqQTy6NkWblD2uHzRTJEv8t+iMqmAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T03:09:18.214035Z","bundle_sha256":"964f43ba86c68f0b1e240148e55331fe5d057ab39fdd00d0f3091eb78a9c1ade"}}