{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:OFD67TBM6BQC4OXKOCP5TE4P7Q","short_pith_number":"pith:OFD67TBM","canonical_record":{"source":{"id":"1904.03095","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-04-05T14:43:01Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"449e101e41172c9a72fa6abc3e5502dfe2b4dd6615d67f09b85e2bfea94df7dc","abstract_canon_sha256":"6d229192cb0cabed2b84705ee291a7a27f61c4b473731704e6555fc06a3bbdd7"},"schema_version":"1.0"},"canonical_sha256":"7147efcc2cf0602e3aea709fd9938ffc195ecfbdab68e97b1cacc283b7ea6935","source":{"kind":"arxiv","id":"1904.03095","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.03095","created_at":"2026-05-17T23:49:18Z"},{"alias_kind":"arxiv_version","alias_value":"1904.03095v1","created_at":"2026-05-17T23:49:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.03095","created_at":"2026-05-17T23:49:18Z"},{"alias_kind":"pith_short_12","alias_value":"OFD67TBM6BQC","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"OFD67TBM6BQC4OXK","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"OFD67TBM","created_at":"2026-05-18T12:33:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:OFD67TBM6BQC4OXKOCP5TE4P7Q","target":"record","payload":{"canonical_record":{"source":{"id":"1904.03095","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-04-05T14:43:01Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"449e101e41172c9a72fa6abc3e5502dfe2b4dd6615d67f09b85e2bfea94df7dc","abstract_canon_sha256":"6d229192cb0cabed2b84705ee291a7a27f61c4b473731704e6555fc06a3bbdd7"},"schema_version":"1.0"},"canonical_sha256":"7147efcc2cf0602e3aea709fd9938ffc195ecfbdab68e97b1cacc283b7ea6935","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:49:18.603611Z","signature_b64":"pBlXvht5lrvDDcCsah0mEqXyVpOlrlqNwWfvIcxOmOsxVx3EUDPPZlR6hBqin6Jlpsd0KwmCGMX2jrvVmiyUCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7147efcc2cf0602e3aea709fd9938ffc195ecfbdab68e97b1cacc283b7ea6935","last_reissued_at":"2026-05-17T23:49:18.603119Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:49:18.603119Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1904.03095","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":"2026-05-17T23:49:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"x5/sD+6UAwE9o41DxnP7dMuNS7i1I4uGtXr8e4TbKPqbnfW3X3AzNFya35TsC4YmeHTlcXHpYAdturvFE7gQBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T15:34:29.881878Z"},"content_sha256":"602d8e19f660fb3d90d0188ec9ff389c4b36a3eb4a9408c9ceed71c7cad2a17d","schema_version":"1.0","event_id":"sha256:602d8e19f660fb3d90d0188ec9ff389c4b36a3eb4a9408c9ceed71c7cad2a17d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:OFD67TBM6BQC4OXKOCP5TE4P7Q","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Detection of a double-peaked H$\\alpha$ component from the accretion disc of NGC 4958","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"J.E. Steiner, T.V. Ricci","submitted_at":"2019-04-05T14:43:01Z","abstract_excerpt":"Active Galactic Nuclei are objects associated with the presence of an accretion disc around supermassive black holes found in the very central region of galaxies with a well-defined bulge. In the optical range of the spectrum, a possible signature of the accretion disc is the presence of a broad double-peaked component that is mostly seen in H$\\alpha$. In this paper, we report the detection of a double-peaked feature in the H$\\alpha$ line in the nucleus of the galaxy NGC 4958. The narrow line region of this object has an emission that is typical of a LINER galaxy, which is the usual classifica"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.03095","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":""},"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":"2026-05-17T23:49:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3uJbwMTAbdA42hFgz9ZxMlY+s6n/qnFx5SmRFaNp6JqO6Vg1znvJZBxItko4Lb+qJQGuG90OfsdxamrBzgQHCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T15:34:29.882225Z"},"content_sha256":"3509872ec10ae0b5d1e00145589ae347cf1cf1a2db64c607e2ec72ed837dcbc2","schema_version":"1.0","event_id":"sha256:3509872ec10ae0b5d1e00145589ae347cf1cf1a2db64c607e2ec72ed837dcbc2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OFD67TBM6BQC4OXKOCP5TE4P7Q/bundle.json","state_url":"https://pith.science/pith/OFD67TBM6BQC4OXKOCP5TE4P7Q/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OFD67TBM6BQC4OXKOCP5TE4P7Q/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":"2026-06-26T15:34:29Z","links":{"resolver":"https://pith.science/pith/OFD67TBM6BQC4OXKOCP5TE4P7Q","bundle":"https://pith.science/pith/OFD67TBM6BQC4OXKOCP5TE4P7Q/bundle.json","state":"https://pith.science/pith/OFD67TBM6BQC4OXKOCP5TE4P7Q/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OFD67TBM6BQC4OXKOCP5TE4P7Q/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:OFD67TBM6BQC4OXKOCP5TE4P7Q","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":"6d229192cb0cabed2b84705ee291a7a27f61c4b473731704e6555fc06a3bbdd7","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-04-05T14:43:01Z","title_canon_sha256":"449e101e41172c9a72fa6abc3e5502dfe2b4dd6615d67f09b85e2bfea94df7dc"},"schema_version":"1.0","source":{"id":"1904.03095","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.03095","created_at":"2026-05-17T23:49:18Z"},{"alias_kind":"arxiv_version","alias_value":"1904.03095v1","created_at":"2026-05-17T23:49:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.03095","created_at":"2026-05-17T23:49:18Z"},{"alias_kind":"pith_short_12","alias_value":"OFD67TBM6BQC","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"OFD67TBM6BQC4OXK","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"OFD67TBM","created_at":"2026-05-18T12:33:24Z"}],"graph_snapshots":[{"event_id":"sha256:3509872ec10ae0b5d1e00145589ae347cf1cf1a2db64c607e2ec72ed837dcbc2","target":"graph","created_at":"2026-05-17T23:49:18Z","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":"Active Galactic Nuclei are objects associated with the presence of an accretion disc around supermassive black holes found in the very central region of galaxies with a well-defined bulge. In the optical range of the spectrum, a possible signature of the accretion disc is the presence of a broad double-peaked component that is mostly seen in H$\\alpha$. In this paper, we report the detection of a double-peaked feature in the H$\\alpha$ line in the nucleus of the galaxy NGC 4958. The narrow line region of this object has an emission that is typical of a LINER galaxy, which is the usual classifica","authors_text":"J.E. Steiner, T.V. Ricci","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-04-05T14:43:01Z","title":"Detection of a double-peaked H$\\alpha$ component from the accretion disc of NGC 4958"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.03095","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":"sha256:602d8e19f660fb3d90d0188ec9ff389c4b36a3eb4a9408c9ceed71c7cad2a17d","target":"record","created_at":"2026-05-17T23:49:18Z","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":"6d229192cb0cabed2b84705ee291a7a27f61c4b473731704e6555fc06a3bbdd7","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-04-05T14:43:01Z","title_canon_sha256":"449e101e41172c9a72fa6abc3e5502dfe2b4dd6615d67f09b85e2bfea94df7dc"},"schema_version":"1.0","source":{"id":"1904.03095","kind":"arxiv","version":1}},"canonical_sha256":"7147efcc2cf0602e3aea709fd9938ffc195ecfbdab68e97b1cacc283b7ea6935","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7147efcc2cf0602e3aea709fd9938ffc195ecfbdab68e97b1cacc283b7ea6935","first_computed_at":"2026-05-17T23:49:18.603119Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:49:18.603119Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pBlXvht5lrvDDcCsah0mEqXyVpOlrlqNwWfvIcxOmOsxVx3EUDPPZlR6hBqin6Jlpsd0KwmCGMX2jrvVmiyUCw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:49:18.603611Z","signed_message":"canonical_sha256_bytes"},"source_id":"1904.03095","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:602d8e19f660fb3d90d0188ec9ff389c4b36a3eb4a9408c9ceed71c7cad2a17d","sha256:3509872ec10ae0b5d1e00145589ae347cf1cf1a2db64c607e2ec72ed837dcbc2"],"state_sha256":"45a93bcffdf38d70afaf53ff36f60cfbd250951031d13a08435b4f8d55234980"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BzXhxfRjuc/4UPpp3VkCmQwNIQKbt5wCtOApZP5JBmMjtlE08PkD1iFPrL8YM9UyN/gEcTjUpaUeJ5YedMEJBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-26T15:34:29.884188Z","bundle_sha256":"3940dc64b69bf689fc4e03380733a38eb6a46bd8ec37baceb7f609bfd054e073"}}