{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:SL2RN2FDGDJ4GRZRBIPBGOXPUB","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":"137a06358431d7184d71b5074d06b5e311bebbb57ecbd02aaa1cdd4f5b5d96aa","cross_cats_sorted":["gr-qc"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-04-21T23:40:12Z","title_canon_sha256":"3508d29bf1d7c9de298d343606478b61e89b6fd8014bf450b8c24dfa0c458c3b"},"schema_version":"1.0","source":{"id":"2504.15486","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2504.15486","created_at":"2026-07-05T10:52:25Z"},{"alias_kind":"arxiv_version","alias_value":"2504.15486v1","created_at":"2026-07-05T10:52:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2504.15486","created_at":"2026-07-05T10:52:25Z"},{"alias_kind":"pith_short_12","alias_value":"SL2RN2FDGDJ4","created_at":"2026-07-05T10:52:25Z"},{"alias_kind":"pith_short_16","alias_value":"SL2RN2FDGDJ4GRZR","created_at":"2026-07-05T10:52:25Z"},{"alias_kind":"pith_short_8","alias_value":"SL2RN2FD","created_at":"2026-07-05T10:52:25Z"}],"graph_snapshots":[{"event_id":"sha256:f55a36639bef78af94047f152eca4897b19edb49874d2378cb72243503555b97","target":"graph","created_at":"2026-07-05T10:52:25Z","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/2504.15486/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Inverse Compton scattering by the thermal motions of electrons is believed to produce polarized hard X-rays in active galactic nuclei and black-hole binaries. Meanwhile, plasma within the plunging region of the black hole free falls into the event horizon with a bulk relativistic speed, which could also imprint polarization on up-scattered photons but has not been discussed in detail. To examine this, we computed polarimetric signatures via general relativistic ray-tracing of a toy model consisting of an accreting, geometrically thin plasma with moderate optical depth, falling onto the black h","authors_text":"Ho-Sang Chan, Jason Dexter, Mitchell C. Begelman","cross_cats":["gr-qc"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-04-21T23:40:12Z","title":"Polarimetric Signatures of Bulk Comptonization from within the Plunging Region of Accreting Black Holes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2504.15486","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:a44ffef1a57784cb2f1925e60c42587edf745b1ae7a1b4f7c9fdad84b9db79a6","target":"record","created_at":"2026-07-05T10:52:25Z","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":"137a06358431d7184d71b5074d06b5e311bebbb57ecbd02aaa1cdd4f5b5d96aa","cross_cats_sorted":["gr-qc"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-04-21T23:40:12Z","title_canon_sha256":"3508d29bf1d7c9de298d343606478b61e89b6fd8014bf450b8c24dfa0c458c3b"},"schema_version":"1.0","source":{"id":"2504.15486","kind":"arxiv","version":1}},"canonical_sha256":"92f516e8a330d3c347310a1e133aefa04feb5186b8253bebc3d43faf07155cf8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"92f516e8a330d3c347310a1e133aefa04feb5186b8253bebc3d43faf07155cf8","first_computed_at":"2026-07-05T10:52:25.235213Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:52:25.235213Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9PHp+tNn/pLuG5YBX6KrpiSTThg2g60Dkq49d547jyJYEUB8JZGt3rvcbFK6Az6j2po5t1QVhVIy/0dgnZu2Dg==","signature_status":"signed_v1","signed_at":"2026-07-05T10:52:25.235704Z","signed_message":"canonical_sha256_bytes"},"source_id":"2504.15486","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a44ffef1a57784cb2f1925e60c42587edf745b1ae7a1b4f7c9fdad84b9db79a6","sha256:f55a36639bef78af94047f152eca4897b19edb49874d2378cb72243503555b97"],"state_sha256":"32d563b60885c6a55f901a69cec3d9265c4181bfb2141a53cf3b210991ce2bb7"}