{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:42ZPSGOUZQAQZ5TXNGB2RPUZDL","short_pith_number":"pith:42ZPSGOU","canonical_record":{"source":{"id":"1305.3273","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-05-14T20:00:02Z","cross_cats_sorted":[],"title_canon_sha256":"0fbed829e8363affb26fc02258741d57d4e77013e0d176b6ceaf7f31093f40b1","abstract_canon_sha256":"42839dcd1cd4a1eb899dd7fd5243730f97cfef647c75a994480049645808f93c"},"schema_version":"1.0"},"canonical_sha256":"e6b2f919d4cc010cf6776983a8be991ade94b5a588c8755f20f2e4bbe39c4f1c","source":{"kind":"arxiv","id":"1305.3273","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.3273","created_at":"2026-05-18T03:15:43Z"},{"alias_kind":"arxiv_version","alias_value":"1305.3273v2","created_at":"2026-05-18T03:15:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.3273","created_at":"2026-05-18T03:15:43Z"},{"alias_kind":"pith_short_12","alias_value":"42ZPSGOUZQAQ","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_16","alias_value":"42ZPSGOUZQAQZ5TX","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_8","alias_value":"42ZPSGOU","created_at":"2026-05-18T12:27:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:42ZPSGOUZQAQZ5TXNGB2RPUZDL","target":"record","payload":{"canonical_record":{"source":{"id":"1305.3273","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-05-14T20:00:02Z","cross_cats_sorted":[],"title_canon_sha256":"0fbed829e8363affb26fc02258741d57d4e77013e0d176b6ceaf7f31093f40b1","abstract_canon_sha256":"42839dcd1cd4a1eb899dd7fd5243730f97cfef647c75a994480049645808f93c"},"schema_version":"1.0"},"canonical_sha256":"e6b2f919d4cc010cf6776983a8be991ade94b5a588c8755f20f2e4bbe39c4f1c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:15:43.133395Z","signature_b64":"DNWAKqJuy3HyjixC8mWhDx0ORBR3OF/MwNj/Y7XjneC2Tp1Fdmwtxtj3Gk4qQIGjKfurrAWmucFejsXHNo/tBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e6b2f919d4cc010cf6776983a8be991ade94b5a588c8755f20f2e4bbe39c4f1c","last_reissued_at":"2026-05-18T03:15:43.132649Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:15:43.132649Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1305.3273","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":"2026-05-18T03:15:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mxaWmjVyIhyXYSiYzWWli2rBh3JE7k8x4Wwn94q7tS0I7uJzaJLCXn4rr3xbPsoz7Ho5hX6lfEPS7nNo9M+2Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T18:06:50.076607Z"},"content_sha256":"410324ad9eb8e1d0584d9c28dad4507e786afc567f8c2a98bad141d4d8160a62","schema_version":"1.0","event_id":"sha256:410324ad9eb8e1d0584d9c28dad4507e786afc567f8c2a98bad141d4d8160a62"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:42ZPSGOUZQAQZ5TXNGB2RPUZDL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Are Narrow Line Seyfert 1s a special class of Active Galactic Nuclei?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"2), A. Eckart (1, C. Iserlohe (1), C. Straubmeier (1). ((1) I. Physikalisches Institut, G. Busch (1), J. Zuther (1), L. Moser (1), M. Bremer (1), M. Garcia-Marin (1), M. Horrobin (1), M. Valencia-S.(1, M. Vitale (1, S. Fischer (1), S. Smajic (1, University of Cologne. (2) Max-Planck-Institut fuer Radioastronomie), Y.E. Rashed (1)","submitted_at":"2013-05-14T20:00:02Z","abstract_excerpt":"No. Due to their apparently extreme optical to X-ray properties, Narrow Line Seyfert 1s (NLSy1s) have been considered a special class of active galactic nuclei (AGN). Here, we summarize observational results from different groups to conclude that none of the characteristics that are typically used to define the NLSy1s as a distinct group - from the, nowadays called, Broad Line Seyfert 1s (BLSy1s) - is unique, nor ubiquitous of these particular sources, but shared by the whole Type 1 AGN. Historically, the NLSy1s have been distinguished from the BLSy1s by the narrow width of the broad Hbeta emi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.3273","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":"2026-05-18T03:15:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ceZ3Hb3hA9Fy6zjc/JPG3SUGRYY0tbeZZiJp9Nt3qV394q1cGcF+Oc0J7ZXWb5O5cZloaDoN8ljivvHGC/ZgDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T18:06:50.077260Z"},"content_sha256":"5c6535aa62defe7ecf4401e15dd7aac91f238a540e7236094f9a4a813bc68154","schema_version":"1.0","event_id":"sha256:5c6535aa62defe7ecf4401e15dd7aac91f238a540e7236094f9a4a813bc68154"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/42ZPSGOUZQAQZ5TXNGB2RPUZDL/bundle.json","state_url":"https://pith.science/pith/42ZPSGOUZQAQZ5TXNGB2RPUZDL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/42ZPSGOUZQAQZ5TXNGB2RPUZDL/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":"2026-05-29T18:06:50Z","links":{"resolver":"https://pith.science/pith/42ZPSGOUZQAQZ5TXNGB2RPUZDL","bundle":"https://pith.science/pith/42ZPSGOUZQAQZ5TXNGB2RPUZDL/bundle.json","state":"https://pith.science/pith/42ZPSGOUZQAQZ5TXNGB2RPUZDL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/42ZPSGOUZQAQZ5TXNGB2RPUZDL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:42ZPSGOUZQAQZ5TXNGB2RPUZDL","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":"42839dcd1cd4a1eb899dd7fd5243730f97cfef647c75a994480049645808f93c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-05-14T20:00:02Z","title_canon_sha256":"0fbed829e8363affb26fc02258741d57d4e77013e0d176b6ceaf7f31093f40b1"},"schema_version":"1.0","source":{"id":"1305.3273","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.3273","created_at":"2026-05-18T03:15:43Z"},{"alias_kind":"arxiv_version","alias_value":"1305.3273v2","created_at":"2026-05-18T03:15:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.3273","created_at":"2026-05-18T03:15:43Z"},{"alias_kind":"pith_short_12","alias_value":"42ZPSGOUZQAQ","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_16","alias_value":"42ZPSGOUZQAQZ5TX","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_8","alias_value":"42ZPSGOU","created_at":"2026-05-18T12:27:32Z"}],"graph_snapshots":[{"event_id":"sha256:5c6535aa62defe7ecf4401e15dd7aac91f238a540e7236094f9a4a813bc68154","target":"graph","created_at":"2026-05-18T03:15:43Z","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":"No. Due to their apparently extreme optical to X-ray properties, Narrow Line Seyfert 1s (NLSy1s) have been considered a special class of active galactic nuclei (AGN). Here, we summarize observational results from different groups to conclude that none of the characteristics that are typically used to define the NLSy1s as a distinct group - from the, nowadays called, Broad Line Seyfert 1s (BLSy1s) - is unique, nor ubiquitous of these particular sources, but shared by the whole Type 1 AGN. Historically, the NLSy1s have been distinguished from the BLSy1s by the narrow width of the broad Hbeta emi","authors_text":"2), A. Eckart (1, C. Iserlohe (1), C. Straubmeier (1). ((1) I. Physikalisches Institut, G. Busch (1), J. Zuther (1), L. Moser (1), M. Bremer (1), M. Garcia-Marin (1), M. Horrobin (1), M. Valencia-S.(1, M. Vitale (1, S. Fischer (1), S. Smajic (1, University of Cologne. (2) Max-Planck-Institut fuer Radioastronomie), Y.E. Rashed (1)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-05-14T20:00:02Z","title":"Are Narrow Line Seyfert 1s a special class of Active Galactic Nuclei?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.3273","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":"sha256:410324ad9eb8e1d0584d9c28dad4507e786afc567f8c2a98bad141d4d8160a62","target":"record","created_at":"2026-05-18T03:15:43Z","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":"42839dcd1cd4a1eb899dd7fd5243730f97cfef647c75a994480049645808f93c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-05-14T20:00:02Z","title_canon_sha256":"0fbed829e8363affb26fc02258741d57d4e77013e0d176b6ceaf7f31093f40b1"},"schema_version":"1.0","source":{"id":"1305.3273","kind":"arxiv","version":2}},"canonical_sha256":"e6b2f919d4cc010cf6776983a8be991ade94b5a588c8755f20f2e4bbe39c4f1c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e6b2f919d4cc010cf6776983a8be991ade94b5a588c8755f20f2e4bbe39c4f1c","first_computed_at":"2026-05-18T03:15:43.132649Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:15:43.132649Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DNWAKqJuy3HyjixC8mWhDx0ORBR3OF/MwNj/Y7XjneC2Tp1Fdmwtxtj3Gk4qQIGjKfurrAWmucFejsXHNo/tBw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:15:43.133395Z","signed_message":"canonical_sha256_bytes"},"source_id":"1305.3273","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:410324ad9eb8e1d0584d9c28dad4507e786afc567f8c2a98bad141d4d8160a62","sha256:5c6535aa62defe7ecf4401e15dd7aac91f238a540e7236094f9a4a813bc68154"],"state_sha256":"aa2abd5998182843f38903d801ce152e11378279490e4a54ecb1987981373f7d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"78G8thzcEju0fWhsJ7VDgpPuS7XF4IGShc0MlPKGcux2RXFm958brJMPIREGHXXa7TmrHnlHWoYBHUtkGEIpBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T18:06:50.080649Z","bundle_sha256":"8c38bad39639fa2e24141c8f06cb938154c3af3166eddce81ab71d8316c0a8ff"}}