{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:5LQ6UZAYO4PQ5V2WMK722FLTF4","short_pith_number":"pith:5LQ6UZAY","canonical_record":{"source":{"id":"1807.09507","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-07-25T09:53:07Z","cross_cats_sorted":[],"title_canon_sha256":"01061b085462ffe035f338847df1c65e917d911a762f5b91efb2f7f29ea91a87","abstract_canon_sha256":"d6638c3be24bbb783f89b75476ae31240884c8aefa803458aa631d623a50898e"},"schema_version":"1.0"},"canonical_sha256":"eae1ea6418771f0ed75662bfad15732f245f2a051fe6609fce364be5db202532","source":{"kind":"arxiv","id":"1807.09507","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.09507","created_at":"2026-05-17T23:49:43Z"},{"alias_kind":"arxiv_version","alias_value":"1807.09507v2","created_at":"2026-05-17T23:49:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.09507","created_at":"2026-05-17T23:49:43Z"},{"alias_kind":"pith_short_12","alias_value":"5LQ6UZAYO4PQ","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_16","alias_value":"5LQ6UZAYO4PQ5V2W","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_8","alias_value":"5LQ6UZAY","created_at":"2026-05-18T12:32:08Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:5LQ6UZAYO4PQ5V2WMK722FLTF4","target":"record","payload":{"canonical_record":{"source":{"id":"1807.09507","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-07-25T09:53:07Z","cross_cats_sorted":[],"title_canon_sha256":"01061b085462ffe035f338847df1c65e917d911a762f5b91efb2f7f29ea91a87","abstract_canon_sha256":"d6638c3be24bbb783f89b75476ae31240884c8aefa803458aa631d623a50898e"},"schema_version":"1.0"},"canonical_sha256":"eae1ea6418771f0ed75662bfad15732f245f2a051fe6609fce364be5db202532","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:49:43.366673Z","signature_b64":"Xs95ubpbEmdKH2nOCTP8O1ac3fxeNRFWJMaCXdUO8e8AqLPJncfXVrGs/PrHSoBYNmQtljKkYhjylgMih8x2Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"eae1ea6418771f0ed75662bfad15732f245f2a051fe6609fce364be5db202532","last_reissued_at":"2026-05-17T23:49:43.366138Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:49:43.366138Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1807.09507","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":"2026-05-17T23:49:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qthmwmaC4PHpROE6mI4QP1z0rC6nO9LYFOhT3o+Ea+k22BkWnqo0op6RxwqN4BV5+70Q1JcBpQMDWeTpleVmCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T08:37:45.865803Z"},"content_sha256":"54537719f410913db648fcff6552a367b50639cfe3427ae3d8cb88397da97e30","schema_version":"1.0","event_id":"sha256:54537719f410913db648fcff6552a367b50639cfe3427ae3d8cb88397da97e30"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:5LQ6UZAYO4PQ5V2WMK722FLTF4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Nuclear $\\gamma$-ray emission from very hot accretion flows","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Ervin Kafexhiu, Felix Aharonian, Maxim Barkov","submitted_at":"2018-07-25T09:53:07Z","abstract_excerpt":"Optically thin accretion plasmas can reach ion temperatures $T_{\\rm i} \\geq 10^{10}$K and thus trigger nuclear reactions. Using a large nuclear interactions network, we studied the radial evolution of the chemical composition of the accretion flow toward the black hole and computed the emissivity in nuclear $\\gamma$-ray lines. In the advection dominated accretion flow (ADAF) regime, CNO and heavier nuclei are destroyed before reaching the last stable orbit. The overall luminosity in the de-excitation lines for a solar composition of plasma can be as high as few times $10^{-5}$ the accretion lu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.09507","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":"2026-05-17T23:49:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mtDsBwFJsSi+ysYVo/7G7gmHGa57InKL4/4D6yjJLMuudC2n2rOESfMwE77Coo1e+njv+E1DEif59JGcyPctDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T08:37:45.866138Z"},"content_sha256":"e10514ac96a4555140d8729c1a895761fac3202ae3521e503673f07c87a734c0","schema_version":"1.0","event_id":"sha256:e10514ac96a4555140d8729c1a895761fac3202ae3521e503673f07c87a734c0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5LQ6UZAYO4PQ5V2WMK722FLTF4/bundle.json","state_url":"https://pith.science/pith/5LQ6UZAYO4PQ5V2WMK722FLTF4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5LQ6UZAYO4PQ5V2WMK722FLTF4/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":"2026-06-01T08:37:45Z","links":{"resolver":"https://pith.science/pith/5LQ6UZAYO4PQ5V2WMK722FLTF4","bundle":"https://pith.science/pith/5LQ6UZAYO4PQ5V2WMK722FLTF4/bundle.json","state":"https://pith.science/pith/5LQ6UZAYO4PQ5V2WMK722FLTF4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5LQ6UZAYO4PQ5V2WMK722FLTF4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:5LQ6UZAYO4PQ5V2WMK722FLTF4","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":"d6638c3be24bbb783f89b75476ae31240884c8aefa803458aa631d623a50898e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-07-25T09:53:07Z","title_canon_sha256":"01061b085462ffe035f338847df1c65e917d911a762f5b91efb2f7f29ea91a87"},"schema_version":"1.0","source":{"id":"1807.09507","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.09507","created_at":"2026-05-17T23:49:43Z"},{"alias_kind":"arxiv_version","alias_value":"1807.09507v2","created_at":"2026-05-17T23:49:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.09507","created_at":"2026-05-17T23:49:43Z"},{"alias_kind":"pith_short_12","alias_value":"5LQ6UZAYO4PQ","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_16","alias_value":"5LQ6UZAYO4PQ5V2W","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_8","alias_value":"5LQ6UZAY","created_at":"2026-05-18T12:32:08Z"}],"graph_snapshots":[{"event_id":"sha256:e10514ac96a4555140d8729c1a895761fac3202ae3521e503673f07c87a734c0","target":"graph","created_at":"2026-05-17T23:49:43Z","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":"Optically thin accretion plasmas can reach ion temperatures $T_{\\rm i} \\geq 10^{10}$K and thus trigger nuclear reactions. Using a large nuclear interactions network, we studied the radial evolution of the chemical composition of the accretion flow toward the black hole and computed the emissivity in nuclear $\\gamma$-ray lines. In the advection dominated accretion flow (ADAF) regime, CNO and heavier nuclei are destroyed before reaching the last stable orbit. The overall luminosity in the de-excitation lines for a solar composition of plasma can be as high as few times $10^{-5}$ the accretion lu","authors_text":"Ervin Kafexhiu, Felix Aharonian, Maxim Barkov","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-07-25T09:53:07Z","title":"Nuclear $\\gamma$-ray emission from very hot accretion flows"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.09507","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":"sha256:54537719f410913db648fcff6552a367b50639cfe3427ae3d8cb88397da97e30","target":"record","created_at":"2026-05-17T23:49:43Z","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":"d6638c3be24bbb783f89b75476ae31240884c8aefa803458aa631d623a50898e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-07-25T09:53:07Z","title_canon_sha256":"01061b085462ffe035f338847df1c65e917d911a762f5b91efb2f7f29ea91a87"},"schema_version":"1.0","source":{"id":"1807.09507","kind":"arxiv","version":2}},"canonical_sha256":"eae1ea6418771f0ed75662bfad15732f245f2a051fe6609fce364be5db202532","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"eae1ea6418771f0ed75662bfad15732f245f2a051fe6609fce364be5db202532","first_computed_at":"2026-05-17T23:49:43.366138Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:49:43.366138Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Xs95ubpbEmdKH2nOCTP8O1ac3fxeNRFWJMaCXdUO8e8AqLPJncfXVrGs/PrHSoBYNmQtljKkYhjylgMih8x2Bw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:49:43.366673Z","signed_message":"canonical_sha256_bytes"},"source_id":"1807.09507","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:54537719f410913db648fcff6552a367b50639cfe3427ae3d8cb88397da97e30","sha256:e10514ac96a4555140d8729c1a895761fac3202ae3521e503673f07c87a734c0"],"state_sha256":"0fd4837cacc91dc87d5e7b2f4ebd638206264672b3aaca67febbb6c330878b0c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Efc+FGA/ArICqdWZIVq2vCs7ByB/hPTvEwgirJrZcDfrq11VKIqHy2i1OXCZ+XJT1FDePmQvH46zKFXk9SckAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T08:37:45.867940Z","bundle_sha256":"be04272abacc5eea03aa2daa20d99be10cf39e5a94d7c5f138c454edd53aef60"}}