{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:J3J5SWO2KOYSJIEXVSW27OIUZG","short_pith_number":"pith:J3J5SWO2","canonical_record":{"source":{"id":"1004.2846","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2010-04-16T13:58:35Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"fff2e2e60b29b3dc1658bd783422767bc4d80b7afce2744dd39454c61e026518","abstract_canon_sha256":"077707d6eabc2bef6c360b0d82afdc202e7bf04ad5ad964ba261133d4bcaf70f"},"schema_version":"1.0"},"canonical_sha256":"4ed3d959da53b124a097acadafb914c9bd9dcab9bff5246956546ce0f949e0a4","source":{"kind":"arxiv","id":"1004.2846","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1004.2846","created_at":"2026-05-18T02:08:04Z"},{"alias_kind":"arxiv_version","alias_value":"1004.2846v1","created_at":"2026-05-18T02:08:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1004.2846","created_at":"2026-05-18T02:08:04Z"},{"alias_kind":"pith_short_12","alias_value":"J3J5SWO2KOYS","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_16","alias_value":"J3J5SWO2KOYSJIEX","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_8","alias_value":"J3J5SWO2","created_at":"2026-05-18T12:26:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:J3J5SWO2KOYSJIEXVSW27OIUZG","target":"record","payload":{"canonical_record":{"source":{"id":"1004.2846","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2010-04-16T13:58:35Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"fff2e2e60b29b3dc1658bd783422767bc4d80b7afce2744dd39454c61e026518","abstract_canon_sha256":"077707d6eabc2bef6c360b0d82afdc202e7bf04ad5ad964ba261133d4bcaf70f"},"schema_version":"1.0"},"canonical_sha256":"4ed3d959da53b124a097acadafb914c9bd9dcab9bff5246956546ce0f949e0a4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:08:04.635940Z","signature_b64":"iEtHSnUjA2JJwgHGyDqOEY0dAycXwXEkoUYN2KYtuJq7+hr/bf5Hl0lsLzu82CnMssqYxIAkHOjivbsRiI+gDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4ed3d959da53b124a097acadafb914c9bd9dcab9bff5246956546ce0f949e0a4","last_reissued_at":"2026-05-18T02:08:04.635147Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:08:04.635147Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1004.2846","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":"2026-05-18T02:08:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iwDPQyLQ+WfadH9V61+otem79a9c31+u7GoW8TWcjdI0kLSeLVO3RhGvhTh9rf7Frg5ilv+YBfrXnwskdVTIDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T11:15:45.983248Z"},"content_sha256":"99867a6e83d96492b6efe8fa401cc6ffa00a0d2a10dfea145988eea66311a756","schema_version":"1.0","event_id":"sha256:99867a6e83d96492b6efe8fa401cc6ffa00a0d2a10dfea145988eea66311a756"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:J3J5SWO2KOYSJIEXVSW27OIUZG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Native Synthetic Imaging of Smoothed Particle Hydrodynamics density fields using gridless Monte Carlo Radiative Transfer","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"Duncan Forgan, Ken Rice","submitted_at":"2010-04-16T13:58:35Z","abstract_excerpt":"An algorithm for creating synthetic telescope images of Smoothed Particle Hydrodynamics (SPH) density fields is presented, which utilises the adaptive nature of the SPH formalism in full.  The imaging process uses Monte Carlo Radiative Transfer (MCRT) methods to model the scattering and absorption of photon packets in the density field, which then exit the system and are captured on a pixelated image plane, creating a 2D image (or a 3D datacube, if the photons are also binned by their wavelength).  The algorithm is implemented on the density field directly: no gridding of the field is required"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1004.2846","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":"2026-05-18T02:08:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"o2veg6fhpgARxbKK8VSoAvWQMWHSqqMZ55Scu8V/ciWP1kjzA7oO8CLKUAG7W4INbUMOEUoQYvh/sGV7i6lvBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T11:15:45.983623Z"},"content_sha256":"bb56c189e21123c3c2b9247446e91c7b46a5ce3871ad59763679ece20210cdd9","schema_version":"1.0","event_id":"sha256:bb56c189e21123c3c2b9247446e91c7b46a5ce3871ad59763679ece20210cdd9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/J3J5SWO2KOYSJIEXVSW27OIUZG/bundle.json","state_url":"https://pith.science/pith/J3J5SWO2KOYSJIEXVSW27OIUZG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/J3J5SWO2KOYSJIEXVSW27OIUZG/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":"2026-06-02T11:15:45Z","links":{"resolver":"https://pith.science/pith/J3J5SWO2KOYSJIEXVSW27OIUZG","bundle":"https://pith.science/pith/J3J5SWO2KOYSJIEXVSW27OIUZG/bundle.json","state":"https://pith.science/pith/J3J5SWO2KOYSJIEXVSW27OIUZG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/J3J5SWO2KOYSJIEXVSW27OIUZG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:J3J5SWO2KOYSJIEXVSW27OIUZG","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":"077707d6eabc2bef6c360b0d82afdc202e7bf04ad5ad964ba261133d4bcaf70f","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2010-04-16T13:58:35Z","title_canon_sha256":"fff2e2e60b29b3dc1658bd783422767bc4d80b7afce2744dd39454c61e026518"},"schema_version":"1.0","source":{"id":"1004.2846","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1004.2846","created_at":"2026-05-18T02:08:04Z"},{"alias_kind":"arxiv_version","alias_value":"1004.2846v1","created_at":"2026-05-18T02:08:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1004.2846","created_at":"2026-05-18T02:08:04Z"},{"alias_kind":"pith_short_12","alias_value":"J3J5SWO2KOYS","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_16","alias_value":"J3J5SWO2KOYSJIEX","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_8","alias_value":"J3J5SWO2","created_at":"2026-05-18T12:26:09Z"}],"graph_snapshots":[{"event_id":"sha256:bb56c189e21123c3c2b9247446e91c7b46a5ce3871ad59763679ece20210cdd9","target":"graph","created_at":"2026-05-18T02:08:04Z","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":"An algorithm for creating synthetic telescope images of Smoothed Particle Hydrodynamics (SPH) density fields is presented, which utilises the adaptive nature of the SPH formalism in full.  The imaging process uses Monte Carlo Radiative Transfer (MCRT) methods to model the scattering and absorption of photon packets in the density field, which then exit the system and are captured on a pixelated image plane, creating a 2D image (or a 3D datacube, if the photons are also binned by their wavelength).  The algorithm is implemented on the density field directly: no gridding of the field is required","authors_text":"Duncan Forgan, Ken Rice","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2010-04-16T13:58:35Z","title":"Native Synthetic Imaging of Smoothed Particle Hydrodynamics density fields using gridless Monte Carlo Radiative Transfer"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1004.2846","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":"sha256:99867a6e83d96492b6efe8fa401cc6ffa00a0d2a10dfea145988eea66311a756","target":"record","created_at":"2026-05-18T02:08:04Z","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":"077707d6eabc2bef6c360b0d82afdc202e7bf04ad5ad964ba261133d4bcaf70f","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2010-04-16T13:58:35Z","title_canon_sha256":"fff2e2e60b29b3dc1658bd783422767bc4d80b7afce2744dd39454c61e026518"},"schema_version":"1.0","source":{"id":"1004.2846","kind":"arxiv","version":1}},"canonical_sha256":"4ed3d959da53b124a097acadafb914c9bd9dcab9bff5246956546ce0f949e0a4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4ed3d959da53b124a097acadafb914c9bd9dcab9bff5246956546ce0f949e0a4","first_computed_at":"2026-05-18T02:08:04.635147Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:08:04.635147Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iEtHSnUjA2JJwgHGyDqOEY0dAycXwXEkoUYN2KYtuJq7+hr/bf5Hl0lsLzu82CnMssqYxIAkHOjivbsRiI+gDw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:08:04.635940Z","signed_message":"canonical_sha256_bytes"},"source_id":"1004.2846","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:99867a6e83d96492b6efe8fa401cc6ffa00a0d2a10dfea145988eea66311a756","sha256:bb56c189e21123c3c2b9247446e91c7b46a5ce3871ad59763679ece20210cdd9"],"state_sha256":"b0b02fe876b6f860d68f1b7ea86f5d5a153b5f89ec9a33ca2caf33f0733f160b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iNpCPANQ8MjRWVhpLpnCI/CYGet8JaU+w5vldOAHDxGCv3jj/yUmnv6qD9urcNNikUUnSJC0fYEiffVkwidVBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T11:15:45.985573Z","bundle_sha256":"d0d5fdd31e9d0f1753607b3836c60eda1444094b6f7e8c40adce618e9d0ab49f"}}