{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:4OONYFYTBIFYIF5UUFD2WGLGV4","short_pith_number":"pith:4OONYFYT","canonical_record":{"source":{"id":"2208.09630","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-08-20T08:02:39Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"c26929429c2376939350db73eca43b8dd39b6ebfcfa8fa22e60246084a0464c1","abstract_canon_sha256":"818955aacde58485172768064184a0a70fd75bffbb5ba86376e0cb3b4a9efd1b"},"schema_version":"1.0"},"canonical_sha256":"e39cdc17130a0b8417b4a147ab1966af32a7d6b29b5880ef56fd2da5aecd9396","source":{"kind":"arxiv","id":"2208.09630","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2208.09630","created_at":"2026-07-05T05:12:14Z"},{"alias_kind":"arxiv_version","alias_value":"2208.09630v1","created_at":"2026-07-05T05:12:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2208.09630","created_at":"2026-07-05T05:12:14Z"},{"alias_kind":"pith_short_12","alias_value":"4OONYFYTBIFY","created_at":"2026-07-05T05:12:14Z"},{"alias_kind":"pith_short_16","alias_value":"4OONYFYTBIFYIF5U","created_at":"2026-07-05T05:12:14Z"},{"alias_kind":"pith_short_8","alias_value":"4OONYFYT","created_at":"2026-07-05T05:12:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:4OONYFYTBIFYIF5UUFD2WGLGV4","target":"record","payload":{"canonical_record":{"source":{"id":"2208.09630","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-08-20T08:02:39Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"c26929429c2376939350db73eca43b8dd39b6ebfcfa8fa22e60246084a0464c1","abstract_canon_sha256":"818955aacde58485172768064184a0a70fd75bffbb5ba86376e0cb3b4a9efd1b"},"schema_version":"1.0"},"canonical_sha256":"e39cdc17130a0b8417b4a147ab1966af32a7d6b29b5880ef56fd2da5aecd9396","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:12:14.987836Z","signature_b64":"9KOc5aRyas9sLncra+7C8LR6Mq3f40uYgi1r2kxEqQBVaga3OtKWHPTnNen8p9iEloA1vg1ixEOky3mromhtAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e39cdc17130a0b8417b4a147ab1966af32a7d6b29b5880ef56fd2da5aecd9396","last_reissued_at":"2026-07-05T05:12:14.987325Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:12:14.987325Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2208.09630","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T05:12:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"exwl56McJD/L0c/V1GoBzsfJsIMtr7H/ZrsHH3um/q5PCmcNQ5NeigD57MLd3aOYFP8hck7tWciaJQ3FKZTvAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T16:08:30.345735Z"},"content_sha256":"8531e5ae27a4094ed4c096cd05ab79b7a8a62f1f5a47f2be074f133c3107441a","schema_version":"1.0","event_id":"sha256:8531e5ae27a4094ed4c096cd05ab79b7a8a62f1f5a47f2be074f133c3107441a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:4OONYFYTBIFYIF5UUFD2WGLGV4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Persistent nuclear burning in Nova Sgr 2016 N.4 (= V5856 Sgr = ASASSN-16ma) six years past its outburst","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"A. Frigo, F.-J. Hambsch, F. M. Walter, N. Masetti, P. Valisa, R. E. Williams, U. Munari","submitted_at":"2022-08-20T08:02:39Z","abstract_excerpt":"We report on the fast Nova Sgr 2016 N.4 being surprisingly trapped in a long-lasting and bright plateau (Delta I >= 10 mag above quiescence) six years past the nova eruption. Very few other novae experience a similar occurrence. We carried out an intensive observing campaign collecting daily BVRI photometry and monthly high-resolution optical spectroscopy, and observed the nova in ultraviolet and X-rays with Swift satellite at five distinct epochs. The bolometric luminosity radiated during the plateau is ~4200 Lsun (scaled to the distance of the Galactic Bulge), corresponding to stable nuclear"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2208.09630","kind":"arxiv","version":1},"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/2208.09630/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":"2026-07-05T05:12:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"e7ZV218TV2VghhBV07sjiyfqtVaY+MhbH69ywyTHkTfvs0VXe99JVyyhfXC5aKZ9rB+FuS3okeA7N1PHrafoBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T16:08:30.346326Z"},"content_sha256":"5d9af5a6f186793d25d39e74f7771b5993f9faf9d82bbd4680485f1ad9ff246f","schema_version":"1.0","event_id":"sha256:5d9af5a6f186793d25d39e74f7771b5993f9faf9d82bbd4680485f1ad9ff246f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4OONYFYTBIFYIF5UUFD2WGLGV4/bundle.json","state_url":"https://pith.science/pith/4OONYFYTBIFYIF5UUFD2WGLGV4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4OONYFYTBIFYIF5UUFD2WGLGV4/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":"2026-08-12T16:08:30Z","links":{"resolver":"https://pith.science/pith/4OONYFYTBIFYIF5UUFD2WGLGV4","bundle":"https://pith.science/pith/4OONYFYTBIFYIF5UUFD2WGLGV4/bundle.json","state":"https://pith.science/pith/4OONYFYTBIFYIF5UUFD2WGLGV4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4OONYFYTBIFYIF5UUFD2WGLGV4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:4OONYFYTBIFYIF5UUFD2WGLGV4","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":"818955aacde58485172768064184a0a70fd75bffbb5ba86376e0cb3b4a9efd1b","cross_cats_sorted":["astro-ph.SR"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-08-20T08:02:39Z","title_canon_sha256":"c26929429c2376939350db73eca43b8dd39b6ebfcfa8fa22e60246084a0464c1"},"schema_version":"1.0","source":{"id":"2208.09630","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2208.09630","created_at":"2026-07-05T05:12:14Z"},{"alias_kind":"arxiv_version","alias_value":"2208.09630v1","created_at":"2026-07-05T05:12:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2208.09630","created_at":"2026-07-05T05:12:14Z"},{"alias_kind":"pith_short_12","alias_value":"4OONYFYTBIFY","created_at":"2026-07-05T05:12:14Z"},{"alias_kind":"pith_short_16","alias_value":"4OONYFYTBIFYIF5U","created_at":"2026-07-05T05:12:14Z"},{"alias_kind":"pith_short_8","alias_value":"4OONYFYT","created_at":"2026-07-05T05:12:14Z"}],"graph_snapshots":[{"event_id":"sha256:5d9af5a6f186793d25d39e74f7771b5993f9faf9d82bbd4680485f1ad9ff246f","target":"graph","created_at":"2026-07-05T05:12:14Z","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/2208.09630/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report on the fast Nova Sgr 2016 N.4 being surprisingly trapped in a long-lasting and bright plateau (Delta I >= 10 mag above quiescence) six years past the nova eruption. Very few other novae experience a similar occurrence. We carried out an intensive observing campaign collecting daily BVRI photometry and monthly high-resolution optical spectroscopy, and observed the nova in ultraviolet and X-rays with Swift satellite at five distinct epochs. The bolometric luminosity radiated during the plateau is ~4200 Lsun (scaled to the distance of the Galactic Bulge), corresponding to stable nuclear","authors_text":"A. Frigo, F.-J. Hambsch, F. M. Walter, N. Masetti, P. Valisa, R. E. Williams, U. Munari","cross_cats":["astro-ph.SR"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-08-20T08:02:39Z","title":"Persistent nuclear burning in Nova Sgr 2016 N.4 (= V5856 Sgr = ASASSN-16ma) six years past its outburst"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2208.09630","kind":"arxiv","version":1},"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":"sha256:8531e5ae27a4094ed4c096cd05ab79b7a8a62f1f5a47f2be074f133c3107441a","target":"record","created_at":"2026-07-05T05:12:14Z","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":"818955aacde58485172768064184a0a70fd75bffbb5ba86376e0cb3b4a9efd1b","cross_cats_sorted":["astro-ph.SR"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-08-20T08:02:39Z","title_canon_sha256":"c26929429c2376939350db73eca43b8dd39b6ebfcfa8fa22e60246084a0464c1"},"schema_version":"1.0","source":{"id":"2208.09630","kind":"arxiv","version":1}},"canonical_sha256":"e39cdc17130a0b8417b4a147ab1966af32a7d6b29b5880ef56fd2da5aecd9396","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e39cdc17130a0b8417b4a147ab1966af32a7d6b29b5880ef56fd2da5aecd9396","first_computed_at":"2026-07-05T05:12:14.987325Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:12:14.987325Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9KOc5aRyas9sLncra+7C8LR6Mq3f40uYgi1r2kxEqQBVaga3OtKWHPTnNen8p9iEloA1vg1ixEOky3mromhtAw==","signature_status":"signed_v1","signed_at":"2026-07-05T05:12:14.987836Z","signed_message":"canonical_sha256_bytes"},"source_id":"2208.09630","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8531e5ae27a4094ed4c096cd05ab79b7a8a62f1f5a47f2be074f133c3107441a","sha256:5d9af5a6f186793d25d39e74f7771b5993f9faf9d82bbd4680485f1ad9ff246f"],"state_sha256":"88388f4b367ab3c91de8ac8cbd39ffd92b9f54872fc6e4a72a12370e8fe5a77d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"U7vBJ51LVufb+kBx0+j/esiQEwqmXbt7i8v9nMONbj72z7t+ZMelgBx+vRijYbKlGFFPQFFOol3Bo/0r7Je+AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-12T16:08:30.351869Z","bundle_sha256":"e631b497b09cbe93ebbb0e66c2202bae45f7ce0a477994b47ce6f6077ce681af"}}