{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:3AGNVIBJ7ITVNAS7LCGQH7V7UX","short_pith_number":"pith:3AGNVIBJ","canonical_record":{"source":{"id":"1105.1548","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-05-08T20:09:21Z","cross_cats_sorted":[],"title_canon_sha256":"3ff350b37f779b91ff0166d5db1a13d45432f3e514160940dd44b77e10b1e45c","abstract_canon_sha256":"796f6b19f4a952583583f396ea5235be3fe54607229eb42f6de60a16bdc8c1e3"},"schema_version":"1.0"},"canonical_sha256":"d80cdaa029fa2756825f588d03febfa5d5d2d0e258939f4450b31dd580a25025","source":{"kind":"arxiv","id":"1105.1548","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1105.1548","created_at":"2026-05-18T02:02:02Z"},{"alias_kind":"arxiv_version","alias_value":"1105.1548v2","created_at":"2026-05-18T02:02:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1105.1548","created_at":"2026-05-18T02:02:02Z"},{"alias_kind":"pith_short_12","alias_value":"3AGNVIBJ7ITV","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_16","alias_value":"3AGNVIBJ7ITVNAS7","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_8","alias_value":"3AGNVIBJ","created_at":"2026-05-18T12:26:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:3AGNVIBJ7ITVNAS7LCGQH7V7UX","target":"record","payload":{"canonical_record":{"source":{"id":"1105.1548","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-05-08T20:09:21Z","cross_cats_sorted":[],"title_canon_sha256":"3ff350b37f779b91ff0166d5db1a13d45432f3e514160940dd44b77e10b1e45c","abstract_canon_sha256":"796f6b19f4a952583583f396ea5235be3fe54607229eb42f6de60a16bdc8c1e3"},"schema_version":"1.0"},"canonical_sha256":"d80cdaa029fa2756825f588d03febfa5d5d2d0e258939f4450b31dd580a25025","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:02:02.729728Z","signature_b64":"uxS23HKxWX1Q4xqRamvGalkPGYRNG+dnagehnHmTYKmZQOUgUFoHEuwZXTh3rUIEUS8nIaVg+M15H0+b8pdUBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d80cdaa029fa2756825f588d03febfa5d5d2d0e258939f4450b31dd580a25025","last_reissued_at":"2026-05-18T02:02:02.729152Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:02:02.729152Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1105.1548","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":"2026-05-18T02:02:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EM9ikQfGN54uSOZZ5vtRkRQmysq/Vu1EwEXcGaQdAuUgfT0ZjnQ1vkL1L8rajcQo0FvxOrx4qLP+ajsIvxlEAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T21:01:56.470704Z"},"content_sha256":"d3fbc83a8c3eb4cef4f2e63c7fdbaed7f7d71986ebf964df5f0a84ce1d657f2a","schema_version":"1.0","event_id":"sha256:d3fbc83a8c3eb4cef4f2e63c7fdbaed7f7d71986ebf964df5f0a84ce1d657f2a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:3AGNVIBJ7ITVNAS7LCGQH7V7UX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An H-alpha nuclear spiral structure in the E0 active galaxy Arp102B","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Alessandro Capetti, Alessandro Marconi, Andrew Robinson, David Axon, Kambiz Fathi, Preeti Kharb, Thaisa Storchi-Bergmann, Witold Maciejewski","submitted_at":"2011-05-08T20:09:21Z","abstract_excerpt":"We report the discovery of a two-armed mini-spiral structure within the inner kiloparsec of the E0 LINER/Seyfert 1 galaxy Arp102B. The arms are observed in H-alpha emission and located East and West of the nucleus, extending up to about 1 kpc from it. We use narrow-band imaging from the Hubble Space Telescope Advanced Camera for Surveys, in combination with archival VLA radio images at 3.6 and 6 cm to investigate the origin of the nuclear spiral. From the H-alpha luminosity of the spiral, we obtain an ionized gas mass of the order of one million solar masses. One possibility is that the nuclea"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1105.1548","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":""},"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":"2026-05-18T02:02:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pNLYM9DpmCZy4aNFzKqrGVO4Mr3J95NUhqMfzFHMLjUw+iShWSqwqtPtSx9jvLCFgFTr1I3Z17l9qN2t20GaCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T21:01:56.471272Z"},"content_sha256":"845f7b5c2f07e7b820f072d962be8c7fdd93c1a0534e2388ef430e672afd6266","schema_version":"1.0","event_id":"sha256:845f7b5c2f07e7b820f072d962be8c7fdd93c1a0534e2388ef430e672afd6266"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3AGNVIBJ7ITVNAS7LCGQH7V7UX/bundle.json","state_url":"https://pith.science/pith/3AGNVIBJ7ITVNAS7LCGQH7V7UX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3AGNVIBJ7ITVNAS7LCGQH7V7UX/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":"2026-05-25T21:01:56Z","links":{"resolver":"https://pith.science/pith/3AGNVIBJ7ITVNAS7LCGQH7V7UX","bundle":"https://pith.science/pith/3AGNVIBJ7ITVNAS7LCGQH7V7UX/bundle.json","state":"https://pith.science/pith/3AGNVIBJ7ITVNAS7LCGQH7V7UX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3AGNVIBJ7ITVNAS7LCGQH7V7UX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:3AGNVIBJ7ITVNAS7LCGQH7V7UX","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":"796f6b19f4a952583583f396ea5235be3fe54607229eb42f6de60a16bdc8c1e3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-05-08T20:09:21Z","title_canon_sha256":"3ff350b37f779b91ff0166d5db1a13d45432f3e514160940dd44b77e10b1e45c"},"schema_version":"1.0","source":{"id":"1105.1548","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1105.1548","created_at":"2026-05-18T02:02:02Z"},{"alias_kind":"arxiv_version","alias_value":"1105.1548v2","created_at":"2026-05-18T02:02:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1105.1548","created_at":"2026-05-18T02:02:02Z"},{"alias_kind":"pith_short_12","alias_value":"3AGNVIBJ7ITV","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_16","alias_value":"3AGNVIBJ7ITVNAS7","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_8","alias_value":"3AGNVIBJ","created_at":"2026-05-18T12:26:18Z"}],"graph_snapshots":[{"event_id":"sha256:845f7b5c2f07e7b820f072d962be8c7fdd93c1a0534e2388ef430e672afd6266","target":"graph","created_at":"2026-05-18T02:02:02Z","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"},"paper":{"abstract_excerpt":"We report the discovery of a two-armed mini-spiral structure within the inner kiloparsec of the E0 LINER/Seyfert 1 galaxy Arp102B. The arms are observed in H-alpha emission and located East and West of the nucleus, extending up to about 1 kpc from it. We use narrow-band imaging from the Hubble Space Telescope Advanced Camera for Surveys, in combination with archival VLA radio images at 3.6 and 6 cm to investigate the origin of the nuclear spiral. From the H-alpha luminosity of the spiral, we obtain an ionized gas mass of the order of one million solar masses. One possibility is that the nuclea","authors_text":"Alessandro Capetti, Alessandro Marconi, Andrew Robinson, David Axon, Kambiz Fathi, Preeti Kharb, Thaisa Storchi-Bergmann, Witold Maciejewski","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-05-08T20:09:21Z","title":"An H-alpha nuclear spiral structure in the E0 active galaxy Arp102B"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1105.1548","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:d3fbc83a8c3eb4cef4f2e63c7fdbaed7f7d71986ebf964df5f0a84ce1d657f2a","target":"record","created_at":"2026-05-18T02:02:02Z","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":"796f6b19f4a952583583f396ea5235be3fe54607229eb42f6de60a16bdc8c1e3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-05-08T20:09:21Z","title_canon_sha256":"3ff350b37f779b91ff0166d5db1a13d45432f3e514160940dd44b77e10b1e45c"},"schema_version":"1.0","source":{"id":"1105.1548","kind":"arxiv","version":2}},"canonical_sha256":"d80cdaa029fa2756825f588d03febfa5d5d2d0e258939f4450b31dd580a25025","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d80cdaa029fa2756825f588d03febfa5d5d2d0e258939f4450b31dd580a25025","first_computed_at":"2026-05-18T02:02:02.729152Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:02:02.729152Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uxS23HKxWX1Q4xqRamvGalkPGYRNG+dnagehnHmTYKmZQOUgUFoHEuwZXTh3rUIEUS8nIaVg+M15H0+b8pdUBA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:02:02.729728Z","signed_message":"canonical_sha256_bytes"},"source_id":"1105.1548","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d3fbc83a8c3eb4cef4f2e63c7fdbaed7f7d71986ebf964df5f0a84ce1d657f2a","sha256:845f7b5c2f07e7b820f072d962be8c7fdd93c1a0534e2388ef430e672afd6266"],"state_sha256":"9e667d2c15dd2ff0f51043d99d4032437bfed6a983145c439ae3aa76cc1f4226"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"j0C2UYQb0CBoODYGsB+6yHrPT3wFADrvXWWTiz3lD59rJvkOMIS/OQ6nhQ5IdGU5v9rMyNTM7pxrF2t5fBRaCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T21:01:56.475051Z","bundle_sha256":"fc21a427be5bba316519f451f0f59912042c6eab2f3c8005e529a4d6eeed8676"}}