{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:6BKEKSIEQ65FZDEOJ6X4PJAUJS","short_pith_number":"pith:6BKEKSIE","canonical_record":{"source":{"id":"2502.06933","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-02-10T19:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"b8659ce4d2b29fad3ca3a6dc1161ee5d891345b1963377f0f41352ce13d92ede","abstract_canon_sha256":"fc390d5488402b88c35acbaecb526e1b453a9d57d10dcfe11c5b51eff74622a8"},"schema_version":"1.0"},"canonical_sha256":"f05445490487ba5c8c8e4fafc7a4144cb435a178e45b695be791d175a33b2953","source":{"kind":"arxiv","id":"2502.06933","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.06933","created_at":"2026-07-05T10:12:30Z"},{"alias_kind":"arxiv_version","alias_value":"2502.06933v1","created_at":"2026-07-05T10:12:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.06933","created_at":"2026-07-05T10:12:30Z"},{"alias_kind":"pith_short_12","alias_value":"6BKEKSIEQ65F","created_at":"2026-07-05T10:12:30Z"},{"alias_kind":"pith_short_16","alias_value":"6BKEKSIEQ65FZDEO","created_at":"2026-07-05T10:12:30Z"},{"alias_kind":"pith_short_8","alias_value":"6BKEKSIE","created_at":"2026-07-05T10:12:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:6BKEKSIEQ65FZDEOJ6X4PJAUJS","target":"record","payload":{"canonical_record":{"source":{"id":"2502.06933","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-02-10T19:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"b8659ce4d2b29fad3ca3a6dc1161ee5d891345b1963377f0f41352ce13d92ede","abstract_canon_sha256":"fc390d5488402b88c35acbaecb526e1b453a9d57d10dcfe11c5b51eff74622a8"},"schema_version":"1.0"},"canonical_sha256":"f05445490487ba5c8c8e4fafc7a4144cb435a178e45b695be791d175a33b2953","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:12:30.564891Z","signature_b64":"CSmE/8ZFWKV54WmaUKlmO8Xr2GkCV1gOS7PvV/Z69m9SNS7Ftn03jXANcCTHlYJAh0xoLu6frSNNA+8r70W9AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f05445490487ba5c8c8e4fafc7a4144cb435a178e45b695be791d175a33b2953","last_reissued_at":"2026-07-05T10:12:30.564364Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:12:30.564364Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2502.06933","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":"2026-07-05T10:12:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"f8IgkVgFHPiYZaMyvqFgwGt/fIREt9PcwMMYfNeyp/OZhNL4XvBJ7ImCWDzDIFrjVyo3suEM5OsZEf48bvUiAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T15:57:53.052631Z"},"content_sha256":"0e7ca63e5ad07c04465633c23a8ba642b113ff750340512ff0281c02489258d3","schema_version":"1.0","event_id":"sha256:0e7ca63e5ad07c04465633c23a8ba642b113ff750340512ff0281c02489258d3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:6BKEKSIEQ65FZDEOJ6X4PJAUJS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A fast and robust recipe for modeling non-ideal MHD effects in star-formation simulations","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. Tritsis, E. Agianoglou, K. Tassis","submitted_at":"2025-02-10T19:00:00Z","abstract_excerpt":"Non-ideal MHD effects are thought to be a crucial component of the star-formation process. Numerically, several complications render the study of non-ideal MHD effects in 3D simulations extremely challenging and hinder our efforts of exploring a large parameter space. We aim to overcome such challenges by proposing a novel, physically-motivated empirical approximation to model non-ideal MHD effects. We perform a number of 2D axisymmetric 3-fluid non-ideal MHD simulations of collapsing prestellar cores and clouds with non-equilibrium chemistry and leverage upon previously-published results. We "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.06933","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/2502.06933/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":"2026-07-05T10:12:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"c7vidMBbVQhg+1Z92+DX3s04iENNOJDwo1LAMhXujgWTrO5vGZ5aKc0R/DnNLnmlr4YXRdAQyz6F6FzPuZGtBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T15:57:53.053153Z"},"content_sha256":"5c0170e111b22a1649b973c19bc2b04a0656058ced4d97682f3068f94837f9e8","schema_version":"1.0","event_id":"sha256:5c0170e111b22a1649b973c19bc2b04a0656058ced4d97682f3068f94837f9e8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6BKEKSIEQ65FZDEOJ6X4PJAUJS/bundle.json","state_url":"https://pith.science/pith/6BKEKSIEQ65FZDEOJ6X4PJAUJS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6BKEKSIEQ65FZDEOJ6X4PJAUJS/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":"2026-08-08T15:57:53Z","links":{"resolver":"https://pith.science/pith/6BKEKSIEQ65FZDEOJ6X4PJAUJS","bundle":"https://pith.science/pith/6BKEKSIEQ65FZDEOJ6X4PJAUJS/bundle.json","state":"https://pith.science/pith/6BKEKSIEQ65FZDEOJ6X4PJAUJS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6BKEKSIEQ65FZDEOJ6X4PJAUJS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:6BKEKSIEQ65FZDEOJ6X4PJAUJS","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":"fc390d5488402b88c35acbaecb526e1b453a9d57d10dcfe11c5b51eff74622a8","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-02-10T19:00:00Z","title_canon_sha256":"b8659ce4d2b29fad3ca3a6dc1161ee5d891345b1963377f0f41352ce13d92ede"},"schema_version":"1.0","source":{"id":"2502.06933","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.06933","created_at":"2026-07-05T10:12:30Z"},{"alias_kind":"arxiv_version","alias_value":"2502.06933v1","created_at":"2026-07-05T10:12:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.06933","created_at":"2026-07-05T10:12:30Z"},{"alias_kind":"pith_short_12","alias_value":"6BKEKSIEQ65F","created_at":"2026-07-05T10:12:30Z"},{"alias_kind":"pith_short_16","alias_value":"6BKEKSIEQ65FZDEO","created_at":"2026-07-05T10:12:30Z"},{"alias_kind":"pith_short_8","alias_value":"6BKEKSIE","created_at":"2026-07-05T10:12:30Z"}],"graph_snapshots":[{"event_id":"sha256:5c0170e111b22a1649b973c19bc2b04a0656058ced4d97682f3068f94837f9e8","target":"graph","created_at":"2026-07-05T10:12:30Z","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/2502.06933/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Non-ideal MHD effects are thought to be a crucial component of the star-formation process. Numerically, several complications render the study of non-ideal MHD effects in 3D simulations extremely challenging and hinder our efforts of exploring a large parameter space. We aim to overcome such challenges by proposing a novel, physically-motivated empirical approximation to model non-ideal MHD effects. We perform a number of 2D axisymmetric 3-fluid non-ideal MHD simulations of collapsing prestellar cores and clouds with non-equilibrium chemistry and leverage upon previously-published results. We ","authors_text":"A. Tritsis, E. Agianoglou, K. Tassis","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-02-10T19:00:00Z","title":"A fast and robust recipe for modeling non-ideal MHD effects in star-formation simulations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.06933","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":"sha256:0e7ca63e5ad07c04465633c23a8ba642b113ff750340512ff0281c02489258d3","target":"record","created_at":"2026-07-05T10:12:30Z","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":"fc390d5488402b88c35acbaecb526e1b453a9d57d10dcfe11c5b51eff74622a8","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-02-10T19:00:00Z","title_canon_sha256":"b8659ce4d2b29fad3ca3a6dc1161ee5d891345b1963377f0f41352ce13d92ede"},"schema_version":"1.0","source":{"id":"2502.06933","kind":"arxiv","version":1}},"canonical_sha256":"f05445490487ba5c8c8e4fafc7a4144cb435a178e45b695be791d175a33b2953","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f05445490487ba5c8c8e4fafc7a4144cb435a178e45b695be791d175a33b2953","first_computed_at":"2026-07-05T10:12:30.564364Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:12:30.564364Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CSmE/8ZFWKV54WmaUKlmO8Xr2GkCV1gOS7PvV/Z69m9SNS7Ftn03jXANcCTHlYJAh0xoLu6frSNNA+8r70W9AA==","signature_status":"signed_v1","signed_at":"2026-07-05T10:12:30.564891Z","signed_message":"canonical_sha256_bytes"},"source_id":"2502.06933","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0e7ca63e5ad07c04465633c23a8ba642b113ff750340512ff0281c02489258d3","sha256:5c0170e111b22a1649b973c19bc2b04a0656058ced4d97682f3068f94837f9e8"],"state_sha256":"6bb08e533535801ff4faaee17ed98fb5e9b933ed9748aa2575b2834fa4a6cefb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"loBMRup4QLOejSCCQ6FRq5DtkH5vNy65FLYEfDG68P+PO2daal2xjBJOFcJwsgYJ7SEwTOLqYfIHm45oTkCJAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-08T15:57:53.056732Z","bundle_sha256":"c4c73cca4eb79c180c16a477844076a7551dfa5e9b036b08042f0eefb1b652af"}}