{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:6U4VBZJCNFI5YFU6CMDXFUKPWG","short_pith_number":"pith:6U4VBZJC","canonical_record":{"source":{"id":"1806.09378","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-06-25T10:57:24Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"e014ff63025519fff69803e2838f5164e6c7920a4c974133536ac73c18407658","abstract_canon_sha256":"a92d9bade75fb48f49dccb2bfffd97ef46380e539bb2f8f247b3dd100bd8439b"},"schema_version":"1.0"},"canonical_sha256":"f53950e5226951dc169e130772d14fb1b216c05edcaa8f2a8f2e38e8ee17239b","source":{"kind":"arxiv","id":"1806.09378","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.09378","created_at":"2026-05-18T00:12:29Z"},{"alias_kind":"arxiv_version","alias_value":"1806.09378v1","created_at":"2026-05-18T00:12:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.09378","created_at":"2026-05-18T00:12:29Z"},{"alias_kind":"pith_short_12","alias_value":"6U4VBZJCNFI5","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_16","alias_value":"6U4VBZJCNFI5YFU6","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_8","alias_value":"6U4VBZJC","created_at":"2026-05-18T12:32:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:6U4VBZJCNFI5YFU6CMDXFUKPWG","target":"record","payload":{"canonical_record":{"source":{"id":"1806.09378","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-06-25T10:57:24Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"e014ff63025519fff69803e2838f5164e6c7920a4c974133536ac73c18407658","abstract_canon_sha256":"a92d9bade75fb48f49dccb2bfffd97ef46380e539bb2f8f247b3dd100bd8439b"},"schema_version":"1.0"},"canonical_sha256":"f53950e5226951dc169e130772d14fb1b216c05edcaa8f2a8f2e38e8ee17239b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:12:29.542991Z","signature_b64":"2yZf9Kweld3GnOdbR4wwAdl6SmXR6/CanmFglKO94bcqRJHnT8Jo6U2MxCzye1dg5aZWbkm2Ja9WyC5Uyp5NCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f53950e5226951dc169e130772d14fb1b216c05edcaa8f2a8f2e38e8ee17239b","last_reissued_at":"2026-05-18T00:12:29.542434Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:12:29.542434Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1806.09378","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":"2026-05-18T00:12:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4/v5XXCosN2pByzmUDsdS9M95l+vh0fe3/braaEUm16pQtJDO64ikVCsObh+Gs0DjfaQqJvxNBgIVCdAku2HDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T18:31:55.873514Z"},"content_sha256":"f9cf7304706d320e6e977b1f80550a3f65321ff2bea7d42d0c77f4ecc1ea241e","schema_version":"1.0","event_id":"sha256:f9cf7304706d320e6e977b1f80550a3f65321ff2bea7d42d0c77f4ecc1ea241e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:6U4VBZJCNFI5YFU6CMDXFUKPWG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Intensity and polarization of radiation reflected from accretion disc","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.SR","authors_text":"G. A. Alekseeva, N. A. Silant'ev, V. V. Novikov","submitted_at":"2018-06-25T10:57:24Z","abstract_excerpt":"We consider the reflection of non-polarized radiation from the point-like sources above the accretion discs both the optically thick and optically thin. We investigate the dependence of the polarization of reflected radiation on the aperture angle of incident radiation. The aperture angle is determined by the radius of accretion disc and the height of the source above the disc. For optically thick accretion discs we show that, if the aperture angle is smaller 70 grad, then the wave electric field oscillations of reflected radiation are parallel to the accretion disc plane. For aperture angle g"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.09378","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":"2026-05-18T00:12:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YzYFM2qG2zWAeMFB9riB8usEVGIxsoBEljZmNGxHWkhCIaK51aM4mhQnyKzgOacPgGePBN5QxpFRL+Ewt1mqBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T18:31:55.874074Z"},"content_sha256":"6f437646fbd432def29bd29ac2699ec3d472db95ddbd3893c25d3432bbe1d2e5","schema_version":"1.0","event_id":"sha256:6f437646fbd432def29bd29ac2699ec3d472db95ddbd3893c25d3432bbe1d2e5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6U4VBZJCNFI5YFU6CMDXFUKPWG/bundle.json","state_url":"https://pith.science/pith/6U4VBZJCNFI5YFU6CMDXFUKPWG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6U4VBZJCNFI5YFU6CMDXFUKPWG/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":"2026-05-27T18:31:55Z","links":{"resolver":"https://pith.science/pith/6U4VBZJCNFI5YFU6CMDXFUKPWG","bundle":"https://pith.science/pith/6U4VBZJCNFI5YFU6CMDXFUKPWG/bundle.json","state":"https://pith.science/pith/6U4VBZJCNFI5YFU6CMDXFUKPWG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6U4VBZJCNFI5YFU6CMDXFUKPWG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:6U4VBZJCNFI5YFU6CMDXFUKPWG","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":"a92d9bade75fb48f49dccb2bfffd97ef46380e539bb2f8f247b3dd100bd8439b","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-06-25T10:57:24Z","title_canon_sha256":"e014ff63025519fff69803e2838f5164e6c7920a4c974133536ac73c18407658"},"schema_version":"1.0","source":{"id":"1806.09378","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.09378","created_at":"2026-05-18T00:12:29Z"},{"alias_kind":"arxiv_version","alias_value":"1806.09378v1","created_at":"2026-05-18T00:12:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.09378","created_at":"2026-05-18T00:12:29Z"},{"alias_kind":"pith_short_12","alias_value":"6U4VBZJCNFI5","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_16","alias_value":"6U4VBZJCNFI5YFU6","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_8","alias_value":"6U4VBZJC","created_at":"2026-05-18T12:32:11Z"}],"graph_snapshots":[{"event_id":"sha256:6f437646fbd432def29bd29ac2699ec3d472db95ddbd3893c25d3432bbe1d2e5","target":"graph","created_at":"2026-05-18T00:12:29Z","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 consider the reflection of non-polarized radiation from the point-like sources above the accretion discs both the optically thick and optically thin. We investigate the dependence of the polarization of reflected radiation on the aperture angle of incident radiation. The aperture angle is determined by the radius of accretion disc and the height of the source above the disc. For optically thick accretion discs we show that, if the aperture angle is smaller 70 grad, then the wave electric field oscillations of reflected radiation are parallel to the accretion disc plane. For aperture angle g","authors_text":"G. A. Alekseeva, N. A. Silant'ev, V. V. Novikov","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-06-25T10:57:24Z","title":"Intensity and polarization of radiation reflected from accretion disc"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.09378","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:f9cf7304706d320e6e977b1f80550a3f65321ff2bea7d42d0c77f4ecc1ea241e","target":"record","created_at":"2026-05-18T00:12:29Z","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":"a92d9bade75fb48f49dccb2bfffd97ef46380e539bb2f8f247b3dd100bd8439b","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-06-25T10:57:24Z","title_canon_sha256":"e014ff63025519fff69803e2838f5164e6c7920a4c974133536ac73c18407658"},"schema_version":"1.0","source":{"id":"1806.09378","kind":"arxiv","version":1}},"canonical_sha256":"f53950e5226951dc169e130772d14fb1b216c05edcaa8f2a8f2e38e8ee17239b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f53950e5226951dc169e130772d14fb1b216c05edcaa8f2a8f2e38e8ee17239b","first_computed_at":"2026-05-18T00:12:29.542434Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:12:29.542434Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2yZf9Kweld3GnOdbR4wwAdl6SmXR6/CanmFglKO94bcqRJHnT8Jo6U2MxCzye1dg5aZWbkm2Ja9WyC5Uyp5NCA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:12:29.542991Z","signed_message":"canonical_sha256_bytes"},"source_id":"1806.09378","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f9cf7304706d320e6e977b1f80550a3f65321ff2bea7d42d0c77f4ecc1ea241e","sha256:6f437646fbd432def29bd29ac2699ec3d472db95ddbd3893c25d3432bbe1d2e5"],"state_sha256":"3f4fed283e11b7f33a54df491f92dd581beb08e7c998c065e8a8f86dbfc07404"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JzYm2tNv4EAEsYmbD9C1AwTi4cGpmnIjWSHuyrBM+aJMD9BnpS50ehQDRzjhhehbKxYqGHnYj5Tc3u36iD15CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T18:31:55.877397Z","bundle_sha256":"b5bdc8d41b1dc824c60e2e4ea638ee2e13908da237ff75665c9a82d55356f98b"}}