{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2000:ALPU7NALSIEGZNIMXJTVIVBQHB","short_pith_number":"pith:ALPU7NAL","canonical_record":{"source":{"id":"astro-ph/0004195","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2000-04-14T03:23:49Z","cross_cats_sorted":[],"title_canon_sha256":"c84482c35c21d0e54d5fc02b28127814496c57aa9342741fc7471fda5c51047b","abstract_canon_sha256":"887454e4eaa6e89ee80e3768b8f771a28852c2966f1823ee273c544b3a574f7a"},"schema_version":"1.0"},"canonical_sha256":"02df4fb40b92086cb50cba675454303878f9725edd2c348d0678c08e557b82e9","source":{"kind":"arxiv","id":"astro-ph/0004195","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0004195","created_at":"2026-07-04T16:16:18Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0004195v1","created_at":"2026-07-04T16:16:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0004195","created_at":"2026-07-04T16:16:18Z"},{"alias_kind":"pith_short_12","alias_value":"ALPU7NALSIEG","created_at":"2026-07-04T16:16:18Z"},{"alias_kind":"pith_short_16","alias_value":"ALPU7NALSIEGZNIM","created_at":"2026-07-04T16:16:18Z"},{"alias_kind":"pith_short_8","alias_value":"ALPU7NAL","created_at":"2026-07-04T16:16:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2000:ALPU7NALSIEGZNIMXJTVIVBQHB","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0004195","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2000-04-14T03:23:49Z","cross_cats_sorted":[],"title_canon_sha256":"c84482c35c21d0e54d5fc02b28127814496c57aa9342741fc7471fda5c51047b","abstract_canon_sha256":"887454e4eaa6e89ee80e3768b8f771a28852c2966f1823ee273c544b3a574f7a"},"schema_version":"1.0"},"canonical_sha256":"02df4fb40b92086cb50cba675454303878f9725edd2c348d0678c08e557b82e9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:16:18.628062Z","signature_b64":"lNKR8LB+NSWJ+wdJzasjXLqO8J0wDBbBao1HLgGu1FyL2N5Epe0r+wIvPBrSI/ODAXPw54gcwVJIjgUfXiaPDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"02df4fb40b92086cb50cba675454303878f9725edd2c348d0678c08e557b82e9","last_reissued_at":"2026-07-04T16:16:18.627485Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:16:18.627485Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0004195","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":"2026-07-04T16:16:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4wE9keX8P8o9i3CuhihVNSZ0bjkkCs1kCVsbombr2fF4bHoke7/N2UUb+ha5QaJkHQa22MMqvfcckyHg6UFxCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T19:30:35.018376Z"},"content_sha256":"dfdde3cae705f398afb9a7304121b4fc5c5e632ab77dd29d2e24c99318e55689","schema_version":"1.0","event_id":"sha256:dfdde3cae705f398afb9a7304121b4fc5c5e632ab77dd29d2e24c99318e55689"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2000:ALPU7NALSIEGZNIMXJTVIVBQHB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Hybrid Thermal-Nonthermal Synchrotron Emission from Hot Accretion Flows","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Dimitrios Psaltis, Feryal Ozel, Ramesh Narayan (Harvard-Smithsonian Center for Astrophysics)","submitted_at":"2000-04-14T03:23:49Z","abstract_excerpt":"We investigate the effect of a hybrid electron population, consisting of both thermal and non-thermal particles, on the synchrotron spectrum, image size, and image shape of a hot accretion flow onto a supermassive black hole. We find two universal features in the emitted synchrotron spectrum: (i) a prominent shoulder at low (< 10^11 Hz) frequencies that is weakly dependent on the shape of the electron energy distribution, and (ii) an extended tail of emission at high (> 10^13 Hz) frequencies whose spectral slope depends on the slope of the power-law energy distribution of the electrons. In the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0004195","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/0004195/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-04T16:16:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+zHJrRbhn0UdJY0/4D75fyx24RETOp3cPwL8q+/3NJ9L7fc5EJKZfQTHGPjwH5UXSRzd4SOMwxDqPExYMJkYDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T19:30:35.019209Z"},"content_sha256":"b845ee0d6f757e802f9eb99642c887284c3e1c0807158800c09c90fa269f03a0","schema_version":"1.0","event_id":"sha256:b845ee0d6f757e802f9eb99642c887284c3e1c0807158800c09c90fa269f03a0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ALPU7NALSIEGZNIMXJTVIVBQHB/bundle.json","state_url":"https://pith.science/pith/ALPU7NALSIEGZNIMXJTVIVBQHB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ALPU7NALSIEGZNIMXJTVIVBQHB/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":"2026-08-19T19:30:35Z","links":{"resolver":"https://pith.science/pith/ALPU7NALSIEGZNIMXJTVIVBQHB","bundle":"https://pith.science/pith/ALPU7NALSIEGZNIMXJTVIVBQHB/bundle.json","state":"https://pith.science/pith/ALPU7NALSIEGZNIMXJTVIVBQHB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ALPU7NALSIEGZNIMXJTVIVBQHB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2000:ALPU7NALSIEGZNIMXJTVIVBQHB","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":"887454e4eaa6e89ee80e3768b8f771a28852c2966f1823ee273c544b3a574f7a","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2000-04-14T03:23:49Z","title_canon_sha256":"c84482c35c21d0e54d5fc02b28127814496c57aa9342741fc7471fda5c51047b"},"schema_version":"1.0","source":{"id":"astro-ph/0004195","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0004195","created_at":"2026-07-04T16:16:18Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0004195v1","created_at":"2026-07-04T16:16:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0004195","created_at":"2026-07-04T16:16:18Z"},{"alias_kind":"pith_short_12","alias_value":"ALPU7NALSIEG","created_at":"2026-07-04T16:16:18Z"},{"alias_kind":"pith_short_16","alias_value":"ALPU7NALSIEGZNIM","created_at":"2026-07-04T16:16:18Z"},{"alias_kind":"pith_short_8","alias_value":"ALPU7NAL","created_at":"2026-07-04T16:16:18Z"}],"graph_snapshots":[{"event_id":"sha256:b845ee0d6f757e802f9eb99642c887284c3e1c0807158800c09c90fa269f03a0","target":"graph","created_at":"2026-07-04T16:16:18Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/astro-ph/0004195/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We investigate the effect of a hybrid electron population, consisting of both thermal and non-thermal particles, on the synchrotron spectrum, image size, and image shape of a hot accretion flow onto a supermassive black hole. We find two universal features in the emitted synchrotron spectrum: (i) a prominent shoulder at low (< 10^11 Hz) frequencies that is weakly dependent on the shape of the electron energy distribution, and (ii) an extended tail of emission at high (> 10^13 Hz) frequencies whose spectral slope depends on the slope of the power-law energy distribution of the electrons. In the","authors_text":"Dimitrios Psaltis, Feryal Ozel, Ramesh Narayan (Harvard-Smithsonian Center for Astrophysics)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2000-04-14T03:23:49Z","title":"Hybrid Thermal-Nonthermal Synchrotron Emission from Hot Accretion Flows"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0004195","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:dfdde3cae705f398afb9a7304121b4fc5c5e632ab77dd29d2e24c99318e55689","target":"record","created_at":"2026-07-04T16:16:18Z","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":"887454e4eaa6e89ee80e3768b8f771a28852c2966f1823ee273c544b3a574f7a","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2000-04-14T03:23:49Z","title_canon_sha256":"c84482c35c21d0e54d5fc02b28127814496c57aa9342741fc7471fda5c51047b"},"schema_version":"1.0","source":{"id":"astro-ph/0004195","kind":"arxiv","version":1}},"canonical_sha256":"02df4fb40b92086cb50cba675454303878f9725edd2c348d0678c08e557b82e9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"02df4fb40b92086cb50cba675454303878f9725edd2c348d0678c08e557b82e9","first_computed_at":"2026-07-04T16:16:18.627485Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:16:18.627485Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lNKR8LB+NSWJ+wdJzasjXLqO8J0wDBbBao1HLgGu1FyL2N5Epe0r+wIvPBrSI/ODAXPw54gcwVJIjgUfXiaPDA==","signature_status":"signed_v1","signed_at":"2026-07-04T16:16:18.628062Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0004195","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dfdde3cae705f398afb9a7304121b4fc5c5e632ab77dd29d2e24c99318e55689","sha256:b845ee0d6f757e802f9eb99642c887284c3e1c0807158800c09c90fa269f03a0"],"state_sha256":"091d10d10ed1389cd50f4aea83e8e9e3f05361d811e16587caf59fd87397ebde"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"st20yLeP94CkwYqrvfiUxuqzxGFsUsp+aMKhCSMVsgvO4oILi/cLS17drPjAjlt8gwQaZWtiFGmMabJQDCttCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-19T19:30:35.025007Z","bundle_sha256":"efad1c1ff8eb55fc456afa08f291ee412578c0c014ba56d6c7bf27fd56119df5"}}