{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:Z2QC6QONB6C6RUUJ5MMMRX77AU","short_pith_number":"pith:Z2QC6QON","canonical_record":{"source":{"id":"1802.06873","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-02-19T21:49:59Z","cross_cats_sorted":[],"title_canon_sha256":"87d9e07233c8d881f34b99db6f644483982b324b619504c5c59fde02dc69dd7b","abstract_canon_sha256":"393d407ab83495838ab950755e7d0c3981332a672e3998e54dd7730f93171dc0"},"schema_version":"1.0"},"canonical_sha256":"cea02f41cd0f85e8d289eb18c8dfff05037cbeda85f5323422552c3b30e91ba1","source":{"kind":"arxiv","id":"1802.06873","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1802.06873","created_at":"2026-05-18T00:12:18Z"},{"alias_kind":"arxiv_version","alias_value":"1802.06873v2","created_at":"2026-05-18T00:12:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1802.06873","created_at":"2026-05-18T00:12:18Z"},{"alias_kind":"pith_short_12","alias_value":"Z2QC6QONB6C6","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_16","alias_value":"Z2QC6QONB6C6RUUJ","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_8","alias_value":"Z2QC6QON","created_at":"2026-05-18T12:33:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:Z2QC6QONB6C6RUUJ5MMMRX77AU","target":"record","payload":{"canonical_record":{"source":{"id":"1802.06873","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-02-19T21:49:59Z","cross_cats_sorted":[],"title_canon_sha256":"87d9e07233c8d881f34b99db6f644483982b324b619504c5c59fde02dc69dd7b","abstract_canon_sha256":"393d407ab83495838ab950755e7d0c3981332a672e3998e54dd7730f93171dc0"},"schema_version":"1.0"},"canonical_sha256":"cea02f41cd0f85e8d289eb18c8dfff05037cbeda85f5323422552c3b30e91ba1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:12:18.282667Z","signature_b64":"713HSsUaecao2IntdXINAF0fCTxWwQ77rxAUDUHv2E8lw5aYNNjKyc5nyVVcs8HUfcgOt+n7nobyNFXNkLfUBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cea02f41cd0f85e8d289eb18c8dfff05037cbeda85f5323422552c3b30e91ba1","last_reissued_at":"2026-05-18T00:12:18.281950Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:12:18.281950Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1802.06873","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":"2026-05-18T00:12:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+ufMinDVgCYa94TZY2qAfyZDaWes9qjMPM+rzIR3Lqo7VwbVJmJRI8iXiRsYUzJfCmCQHC0T/ZJLzn47RmoLAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-02T21:27:26.570817Z"},"content_sha256":"0b85ee32bc502d4ee98a2181ee8b3765d4137375b0db4a2ecb31e8e5fca0b7ff","schema_version":"1.0","event_id":"sha256:0b85ee32bc502d4ee98a2181ee8b3765d4137375b0db4a2ecb31e8e5fca0b7ff"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:Z2QC6QONB6C6RUUJ5MMMRX77AU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Multi-scale simulations of black hole accretion in barred galaxies: Self-gravitating disk models","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Manuel Jung, Tobias F. Illenseer, Wolfgang J. Duschl","submitted_at":"2018-02-19T21:49:59Z","abstract_excerpt":"Due to the non-axisymmetric potential of the central bar, barred spiral galaxies form, in addition to their characteristic arms and bar, a variety of structures within the thin gas disk, like nuclear rings, inner spirals and dust-lanes. These structures in the inner kiloparsec are most important to explain and understand the rate of black hole feeding. The aim of this work is to investigate the influence of stellar bars in spiral galaxies on the thin self-gravitating gas disk. We focus on the accretion of gas onto the central supermassive black hole and its time-dependent evolution. We conduct"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.06873","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":"2026-05-18T00:12:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gycl9y0hslCNKgPckT1tJDKns3tg/7U/e99U23zGLH5ivRkHpOs7qP6Q4FkbdWjoYpGKIVuV67rML6ulyvXqCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-02T21:27:26.571156Z"},"content_sha256":"36f2cf0602655cd5bd8ef0ffc92ddda4a51808a916d82c650ee2f02bcda92738","schema_version":"1.0","event_id":"sha256:36f2cf0602655cd5bd8ef0ffc92ddda4a51808a916d82c650ee2f02bcda92738"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Z2QC6QONB6C6RUUJ5MMMRX77AU/bundle.json","state_url":"https://pith.science/pith/Z2QC6QONB6C6RUUJ5MMMRX77AU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Z2QC6QONB6C6RUUJ5MMMRX77AU/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":"2026-07-02T21:27:26Z","links":{"resolver":"https://pith.science/pith/Z2QC6QONB6C6RUUJ5MMMRX77AU","bundle":"https://pith.science/pith/Z2QC6QONB6C6RUUJ5MMMRX77AU/bundle.json","state":"https://pith.science/pith/Z2QC6QONB6C6RUUJ5MMMRX77AU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Z2QC6QONB6C6RUUJ5MMMRX77AU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:Z2QC6QONB6C6RUUJ5MMMRX77AU","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":"393d407ab83495838ab950755e7d0c3981332a672e3998e54dd7730f93171dc0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-02-19T21:49:59Z","title_canon_sha256":"87d9e07233c8d881f34b99db6f644483982b324b619504c5c59fde02dc69dd7b"},"schema_version":"1.0","source":{"id":"1802.06873","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1802.06873","created_at":"2026-05-18T00:12:18Z"},{"alias_kind":"arxiv_version","alias_value":"1802.06873v2","created_at":"2026-05-18T00:12:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1802.06873","created_at":"2026-05-18T00:12:18Z"},{"alias_kind":"pith_short_12","alias_value":"Z2QC6QONB6C6","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_16","alias_value":"Z2QC6QONB6C6RUUJ","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_8","alias_value":"Z2QC6QON","created_at":"2026-05-18T12:33:04Z"}],"graph_snapshots":[{"event_id":"sha256:36f2cf0602655cd5bd8ef0ffc92ddda4a51808a916d82c650ee2f02bcda92738","target":"graph","created_at":"2026-05-18T00:12:18Z","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":"Due to the non-axisymmetric potential of the central bar, barred spiral galaxies form, in addition to their characteristic arms and bar, a variety of structures within the thin gas disk, like nuclear rings, inner spirals and dust-lanes. These structures in the inner kiloparsec are most important to explain and understand the rate of black hole feeding. The aim of this work is to investigate the influence of stellar bars in spiral galaxies on the thin self-gravitating gas disk. We focus on the accretion of gas onto the central supermassive black hole and its time-dependent evolution. We conduct","authors_text":"Manuel Jung, Tobias F. Illenseer, Wolfgang J. Duschl","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-02-19T21:49:59Z","title":"Multi-scale simulations of black hole accretion in barred galaxies: Self-gravitating disk models"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.06873","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":"sha256:0b85ee32bc502d4ee98a2181ee8b3765d4137375b0db4a2ecb31e8e5fca0b7ff","target":"record","created_at":"2026-05-18T00:12:18Z","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":"393d407ab83495838ab950755e7d0c3981332a672e3998e54dd7730f93171dc0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-02-19T21:49:59Z","title_canon_sha256":"87d9e07233c8d881f34b99db6f644483982b324b619504c5c59fde02dc69dd7b"},"schema_version":"1.0","source":{"id":"1802.06873","kind":"arxiv","version":2}},"canonical_sha256":"cea02f41cd0f85e8d289eb18c8dfff05037cbeda85f5323422552c3b30e91ba1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cea02f41cd0f85e8d289eb18c8dfff05037cbeda85f5323422552c3b30e91ba1","first_computed_at":"2026-05-18T00:12:18.281950Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:12:18.281950Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"713HSsUaecao2IntdXINAF0fCTxWwQ77rxAUDUHv2E8lw5aYNNjKyc5nyVVcs8HUfcgOt+n7nobyNFXNkLfUBA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:12:18.282667Z","signed_message":"canonical_sha256_bytes"},"source_id":"1802.06873","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0b85ee32bc502d4ee98a2181ee8b3765d4137375b0db4a2ecb31e8e5fca0b7ff","sha256:36f2cf0602655cd5bd8ef0ffc92ddda4a51808a916d82c650ee2f02bcda92738"],"state_sha256":"161d0ece53752d19b3dbf04991203d37d8b646c566f0861e13f35ec3b2a2d1bf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RCZtfNGQNsWyh1/ce4xkP6bWA/zAc5aFJd1038iQI27a7c0RIMTXxfoFnOzOOyqR61r+RqOw+fU/2dVY1ySeCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-02T21:27:26.573043Z","bundle_sha256":"45fa947972943add68f65336c3d2495f39d76c32b0d7d3943382e536b40d47df"}}