{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2013:EHBQU2O3YETFX2E245RTMSYC4A","short_pith_number":"pith:EHBQU2O3","schema_version":"1.0","canonical_sha256":"21c30a69dbc1265be89ae763364b02e014843844954899063c6689de4ba3a30d","source":{"kind":"arxiv","id":"1304.7126","version":2},"attestation_state":"computed","paper":{"title":"RAMSES-RT: Radiation hydrodynamics in the cosmological context","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Dominique Aubert, Jeremy Blaizot, Joakim Rosdahl, Romain Teyssier, Timothy Stranex","submitted_at":"2013-04-26T11:09:36Z","abstract_excerpt":"We present a new implementation of radiation hydrodynamics (RHD) in the adaptive mesh refinement (AMR) code RAMSES. The multi-group radiative transfer (RT) is performed on the AMR grid with a first-order Godunov method using the M1 closure for the Eddington tensor, and is coupled to the hydrodynamics via non-equilibrium thermochemistry of hydrogen and helium. This moment-based approach has the large advantage that the computational cost is independent of the number of radiative sources - it can even deal with continuous regions of emission such as bound-free emission from gas. As it is built d"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1304.7126","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-04-26T11:09:36Z","cross_cats_sorted":[],"title_canon_sha256":"bc1c5adc9d15f0a72c864bcec6bd4c3f2da672d9c7521a67d344a4340d4930cf","abstract_canon_sha256":"d159d9cc19689bc7535ba7a8e9e424acfb3d58977e0de176d23519b4809ae31b"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:50:21.457777Z","signature_b64":"dxZzg1StkT9jdB5hWd7G1jbU3PEfvhcJw5rNhjyOWGUOH4Go1aeYeXa3j7XbZLMWpt5xv4tse9yLqWloXd9yAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"21c30a69dbc1265be89ae763364b02e014843844954899063c6689de4ba3a30d","last_reissued_at":"2026-05-18T01:50:21.457031Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:50:21.457031Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"RAMSES-RT: Radiation hydrodynamics in the cosmological context","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Dominique Aubert, Jeremy Blaizot, Joakim Rosdahl, Romain Teyssier, Timothy Stranex","submitted_at":"2013-04-26T11:09:36Z","abstract_excerpt":"We present a new implementation of radiation hydrodynamics (RHD) in the adaptive mesh refinement (AMR) code RAMSES. The multi-group radiative transfer (RT) is performed on the AMR grid with a first-order Godunov method using the M1 closure for the Eddington tensor, and is coupled to the hydrodynamics via non-equilibrium thermochemistry of hydrogen and helium. This moment-based approach has the large advantage that the computational cost is independent of the number of radiative sources - it can even deal with continuous regions of emission such as bound-free emission from gas. As it is built d"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.7126","kind":"arxiv","version":2},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1304.7126","created_at":"2026-05-18T01:50:21.457156+00:00"},{"alias_kind":"arxiv_version","alias_value":"1304.7126v2","created_at":"2026-05-18T01:50:21.457156+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.7126","created_at":"2026-05-18T01:50:21.457156+00:00"},{"alias_kind":"pith_short_12","alias_value":"EHBQU2O3YETF","created_at":"2026-05-18T12:27:43.054852+00:00"},{"alias_kind":"pith_short_16","alias_value":"EHBQU2O3YETFX2E2","created_at":"2026-05-18T12:27:43.054852+00:00"},{"alias_kind":"pith_short_8","alias_value":"EHBQU2O3","created_at":"2026-05-18T12:27:43.054852+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/EHBQU2O3YETFX2E245RTMSYC4A","json":"https://pith.science/pith/EHBQU2O3YETFX2E245RTMSYC4A.json","graph_json":"https://pith.science/api/pith-number/EHBQU2O3YETFX2E245RTMSYC4A/graph.json","events_json":"https://pith.science/api/pith-number/EHBQU2O3YETFX2E245RTMSYC4A/events.json","paper":"https://pith.science/paper/EHBQU2O3"},"agent_actions":{"view_html":"https://pith.science/pith/EHBQU2O3YETFX2E245RTMSYC4A","download_json":"https://pith.science/pith/EHBQU2O3YETFX2E245RTMSYC4A.json","view_paper":"https://pith.science/paper/EHBQU2O3","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1304.7126&json=true","fetch_graph":"https://pith.science/api/pith-number/EHBQU2O3YETFX2E245RTMSYC4A/graph.json","fetch_events":"https://pith.science/api/pith-number/EHBQU2O3YETFX2E245RTMSYC4A/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/EHBQU2O3YETFX2E245RTMSYC4A/action/timestamp_anchor","attest_storage":"https://pith.science/pith/EHBQU2O3YETFX2E245RTMSYC4A/action/storage_attestation","attest_author":"https://pith.science/pith/EHBQU2O3YETFX2E245RTMSYC4A/action/author_attestation","sign_citation":"https://pith.science/pith/EHBQU2O3YETFX2E245RTMSYC4A/action/citation_signature","submit_replication":"https://pith.science/pith/EHBQU2O3YETFX2E245RTMSYC4A/action/replication_record"}},"created_at":"2026-05-18T01:50:21.457156+00:00","updated_at":"2026-05-18T01:50:21.457156+00:00"}