{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:HF4OZCXEJ3DYS4XBEPUJSCJB75","short_pith_number":"pith:HF4OZCXE","canonical_record":{"source":{"id":"2112.11268","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2021-12-21T14:49:33Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"de84e32630ab873c84b11ab1bfcfba18c186dfe7ea65866e191c3bf1af0b5f75","abstract_canon_sha256":"673b504aed33b27176c92ca0b74892ad477cf0f5b84101fd607ab10ff270cfc6"},"schema_version":"1.0"},"canonical_sha256":"3978ec8ae44ec78972e123e8990921ff5e2c07561f1a8264762558a0b04cd070","source":{"kind":"arxiv","id":"2112.11268","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2112.11268","created_at":"2026-07-05T03:45:58Z"},{"alias_kind":"arxiv_version","alias_value":"2112.11268v1","created_at":"2026-07-05T03:45:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2112.11268","created_at":"2026-07-05T03:45:58Z"},{"alias_kind":"pith_short_12","alias_value":"HF4OZCXEJ3DY","created_at":"2026-07-05T03:45:58Z"},{"alias_kind":"pith_short_16","alias_value":"HF4OZCXEJ3DYS4XB","created_at":"2026-07-05T03:45:58Z"},{"alias_kind":"pith_short_8","alias_value":"HF4OZCXE","created_at":"2026-07-05T03:45:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:HF4OZCXEJ3DYS4XBEPUJSCJB75","target":"record","payload":{"canonical_record":{"source":{"id":"2112.11268","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2021-12-21T14:49:33Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"de84e32630ab873c84b11ab1bfcfba18c186dfe7ea65866e191c3bf1af0b5f75","abstract_canon_sha256":"673b504aed33b27176c92ca0b74892ad477cf0f5b84101fd607ab10ff270cfc6"},"schema_version":"1.0"},"canonical_sha256":"3978ec8ae44ec78972e123e8990921ff5e2c07561f1a8264762558a0b04cd070","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:45:58.067684Z","signature_b64":"q1QUeLuthBAX6cei6XupkKKxqpltRwTUzZbJ3bdlwnYN4Vo0krIjSWPHl8HekWN5uyXEci/4/dpYzi2q6G7TBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3978ec8ae44ec78972e123e8990921ff5e2c07561f1a8264762558a0b04cd070","last_reissued_at":"2026-07-05T03:45:58.067248Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:45:58.067248Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2112.11268","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":"2026-07-05T03:45:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oyWzSggrvexCR8RJCje/lTKL073C1d0p4A4+NxS7mR7FmVM4QUhf7BhzCYdgNJDa/gw4kX8T+0WVVcRYziaJAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T07:13:00.340134Z"},"content_sha256":"a28cd189a928e24654490a98354f22541c0c69a3d32e98fc40bdb7878c86b933","schema_version":"1.0","event_id":"sha256:a28cd189a928e24654490a98354f22541c0c69a3d32e98fc40bdb7878c86b933"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:HF4OZCXEJ3DYS4XBEPUJSCJB75","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Prospects for differentiating extended coronal geometries in AGNs with the IXPE mission","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.HE","authors_text":"A. Marinucci, F. Ursini, G. Matt, M. Dov\\v{c}iak, S. Bianchi, W. Zhang","submitted_at":"2021-12-21T14:49:33Z","abstract_excerpt":"X-ray polarimetry can potentially constrain the unknown geometrical shape of AGN coronae. We present simulations of the X-ray polarization signal expected from AGN coronae, assuming three different geometries, namely slab, spherical and conical. We use the fully relativistic Monte-Carlo Comptonization code monk to compute the X-ray polarization degree and angle. We explore different coronal parameters such as shape, size, location and optical depth. Different coronal geometries give a significantly different X-ray polarization signal. A slab corona yields a high polarization degree, up to 14% "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2112.11268","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/2112.11268/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":"2026-07-05T03:45:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Opt6rxcW8z53QhJr+Ky0Lie9qA10rONDAQzRayZ1m2ofzG1fjAu9YpNKxZTSjM6thwhTD64S7QtvYYq7tWAECA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T07:13:00.340528Z"},"content_sha256":"547ba031d8300c0e94937c9f30019367b91c7811626fb9a0cbbf13800f30b822","schema_version":"1.0","event_id":"sha256:547ba031d8300c0e94937c9f30019367b91c7811626fb9a0cbbf13800f30b822"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HF4OZCXEJ3DYS4XBEPUJSCJB75/bundle.json","state_url":"https://pith.science/pith/HF4OZCXEJ3DYS4XBEPUJSCJB75/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HF4OZCXEJ3DYS4XBEPUJSCJB75/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":"2026-07-07T07:13:00Z","links":{"resolver":"https://pith.science/pith/HF4OZCXEJ3DYS4XBEPUJSCJB75","bundle":"https://pith.science/pith/HF4OZCXEJ3DYS4XBEPUJSCJB75/bundle.json","state":"https://pith.science/pith/HF4OZCXEJ3DYS4XBEPUJSCJB75/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HF4OZCXEJ3DYS4XBEPUJSCJB75/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:HF4OZCXEJ3DYS4XBEPUJSCJB75","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":"673b504aed33b27176c92ca0b74892ad477cf0f5b84101fd607ab10ff270cfc6","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2021-12-21T14:49:33Z","title_canon_sha256":"de84e32630ab873c84b11ab1bfcfba18c186dfe7ea65866e191c3bf1af0b5f75"},"schema_version":"1.0","source":{"id":"2112.11268","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2112.11268","created_at":"2026-07-05T03:45:58Z"},{"alias_kind":"arxiv_version","alias_value":"2112.11268v1","created_at":"2026-07-05T03:45:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2112.11268","created_at":"2026-07-05T03:45:58Z"},{"alias_kind":"pith_short_12","alias_value":"HF4OZCXEJ3DY","created_at":"2026-07-05T03:45:58Z"},{"alias_kind":"pith_short_16","alias_value":"HF4OZCXEJ3DYS4XB","created_at":"2026-07-05T03:45:58Z"},{"alias_kind":"pith_short_8","alias_value":"HF4OZCXE","created_at":"2026-07-05T03:45:58Z"}],"graph_snapshots":[{"event_id":"sha256:547ba031d8300c0e94937c9f30019367b91c7811626fb9a0cbbf13800f30b822","target":"graph","created_at":"2026-07-05T03:45:58Z","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/2112.11268/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"X-ray polarimetry can potentially constrain the unknown geometrical shape of AGN coronae. We present simulations of the X-ray polarization signal expected from AGN coronae, assuming three different geometries, namely slab, spherical and conical. We use the fully relativistic Monte-Carlo Comptonization code monk to compute the X-ray polarization degree and angle. We explore different coronal parameters such as shape, size, location and optical depth. Different coronal geometries give a significantly different X-ray polarization signal. A slab corona yields a high polarization degree, up to 14% ","authors_text":"A. Marinucci, F. Ursini, G. Matt, M. Dov\\v{c}iak, S. Bianchi, W. Zhang","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2021-12-21T14:49:33Z","title":"Prospects for differentiating extended coronal geometries in AGNs with the IXPE mission"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2112.11268","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:a28cd189a928e24654490a98354f22541c0c69a3d32e98fc40bdb7878c86b933","target":"record","created_at":"2026-07-05T03:45:58Z","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":"673b504aed33b27176c92ca0b74892ad477cf0f5b84101fd607ab10ff270cfc6","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2021-12-21T14:49:33Z","title_canon_sha256":"de84e32630ab873c84b11ab1bfcfba18c186dfe7ea65866e191c3bf1af0b5f75"},"schema_version":"1.0","source":{"id":"2112.11268","kind":"arxiv","version":1}},"canonical_sha256":"3978ec8ae44ec78972e123e8990921ff5e2c07561f1a8264762558a0b04cd070","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3978ec8ae44ec78972e123e8990921ff5e2c07561f1a8264762558a0b04cd070","first_computed_at":"2026-07-05T03:45:58.067248Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:45:58.067248Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"q1QUeLuthBAX6cei6XupkKKxqpltRwTUzZbJ3bdlwnYN4Vo0krIjSWPHl8HekWN5uyXEci/4/dpYzi2q6G7TBg==","signature_status":"signed_v1","signed_at":"2026-07-05T03:45:58.067684Z","signed_message":"canonical_sha256_bytes"},"source_id":"2112.11268","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a28cd189a928e24654490a98354f22541c0c69a3d32e98fc40bdb7878c86b933","sha256:547ba031d8300c0e94937c9f30019367b91c7811626fb9a0cbbf13800f30b822"],"state_sha256":"870787ac6b51581f74e79a7ec656ffce28f999d9524e6e0046be21765c9ac165"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"B9YmFQHY9/3db6tbxG+U0NSBUB0iFxVGEzZMdnLhw7qs61MoN9ORFdkhmxYnSsJkVbXrttyHRODnc1NpPMtrBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T07:13:00.342714Z","bundle_sha256":"d362b8134fd32d999fc6c1eeb0c092111cb00d451ad5d5e1cfe6bc622420c71a"}}