{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:HWOVFMUO4TPE5SSDBT67XBKRMG","short_pith_number":"pith:HWOVFMUO","canonical_record":{"source":{"id":"1607.01802","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-07-06T20:10:10Z","cross_cats_sorted":["astro-ph.SR","physics.comp-ph"],"title_canon_sha256":"34ba7d3cdd30921349ed79bae235e231acb3bad768010af145ccacec00aa0453","abstract_canon_sha256":"4d944fa970421633d7838ec7d5ea2963ac74e45072817b5184a86162603e3b12"},"schema_version":"1.0"},"canonical_sha256":"3d9d52b28ee4de4eca430cfdfb8551619ec76bcfc3d6d6ec8495dd29808fd598","source":{"kind":"arxiv","id":"1607.01802","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1607.01802","created_at":"2026-05-18T00:53:33Z"},{"alias_kind":"arxiv_version","alias_value":"1607.01802v1","created_at":"2026-05-18T00:53:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.01802","created_at":"2026-05-18T00:53:33Z"},{"alias_kind":"pith_short_12","alias_value":"HWOVFMUO4TPE","created_at":"2026-05-18T12:30:22Z"},{"alias_kind":"pith_short_16","alias_value":"HWOVFMUO4TPE5SSD","created_at":"2026-05-18T12:30:22Z"},{"alias_kind":"pith_short_8","alias_value":"HWOVFMUO","created_at":"2026-05-18T12:30:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:HWOVFMUO4TPE5SSDBT67XBKRMG","target":"record","payload":{"canonical_record":{"source":{"id":"1607.01802","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-07-06T20:10:10Z","cross_cats_sorted":["astro-ph.SR","physics.comp-ph"],"title_canon_sha256":"34ba7d3cdd30921349ed79bae235e231acb3bad768010af145ccacec00aa0453","abstract_canon_sha256":"4d944fa970421633d7838ec7d5ea2963ac74e45072817b5184a86162603e3b12"},"schema_version":"1.0"},"canonical_sha256":"3d9d52b28ee4de4eca430cfdfb8551619ec76bcfc3d6d6ec8495dd29808fd598","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:53:33.896549Z","signature_b64":"u+tEt3TQHS1JUlVmopfogLWZGFGBoN+H6wLuGRA2snkyyCmu3bUtxbFKQJvZJGm7vmD23x6KSzyZG2eV5qi4Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3d9d52b28ee4de4eca430cfdfb8551619ec76bcfc3d6d6ec8495dd29808fd598","last_reissued_at":"2026-05-18T00:53:33.896011Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:53:33.896011Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1607.01802","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":"2026-05-18T00:53:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9uu8W1j2/yDdupTC7TwxzGLL85ES4JO3hrTntmyizJn1qVb9FfvGg+qiX4FqwbHPSgOa/wq0feLNGvQDYkpsBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T18:35:10.710248Z"},"content_sha256":"f7d4b187e5a8609191e912d3d79a717c4dcecfb4d3158c7fb0cc52673266cf70","schema_version":"1.0","event_id":"sha256:f7d4b187e5a8609191e912d3d79a717c4dcecfb4d3158c7fb0cc52673266cf70"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:HWOVFMUO4TPE5SSDBT67XBKRMG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Hybrid Adaptive Ray-Moment Method (HARM$^2$): A Highly Parallel Method for Radiation Hydrodynamics on Adaptive Grids","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR","physics.comp-ph"],"primary_cat":"astro-ph.IM","authors_text":"Aaron T. Lee, Anna L. Rosen, Jeffrey S. Oishi, Mark R. Krumholz, Richard I. Klein","submitted_at":"2016-07-06T20:10:10Z","abstract_excerpt":"We present a highly-parallel multi-frequency hybrid radiation hydrodynamics algorithm that combines a spatially-adaptive long characteristics method for the radiation field from point sources with a moment method that handles the diffuse radiation field produced by a volume-filling fluid. Our Hybrid Adaptive Ray-Moment Method (HARM$^2$) operates on patch-based adaptive grids, is compatible with asynchronous time stepping, and works with any moment method. In comparison to previous long characteristics methods, we have greatly improved the parallel performance of the adaptive long-characteristi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.01802","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":"2026-05-18T00:53:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2wLenaMfmV+ZUxAYr9tciQGS6LTwI7E+/uKto3gC4Wyr3rsitqzvTg1W7jxwAYzHmfntLzp9Zyivz9jDD6jvCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T18:35:10.711013Z"},"content_sha256":"0d15356b1dde691921bd3401c1df0c82c68c7217e25ec7d0e7063c1a3069d5e8","schema_version":"1.0","event_id":"sha256:0d15356b1dde691921bd3401c1df0c82c68c7217e25ec7d0e7063c1a3069d5e8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HWOVFMUO4TPE5SSDBT67XBKRMG/bundle.json","state_url":"https://pith.science/pith/HWOVFMUO4TPE5SSDBT67XBKRMG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HWOVFMUO4TPE5SSDBT67XBKRMG/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":"2026-06-09T18:35:10Z","links":{"resolver":"https://pith.science/pith/HWOVFMUO4TPE5SSDBT67XBKRMG","bundle":"https://pith.science/pith/HWOVFMUO4TPE5SSDBT67XBKRMG/bundle.json","state":"https://pith.science/pith/HWOVFMUO4TPE5SSDBT67XBKRMG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HWOVFMUO4TPE5SSDBT67XBKRMG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:HWOVFMUO4TPE5SSDBT67XBKRMG","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":"4d944fa970421633d7838ec7d5ea2963ac74e45072817b5184a86162603e3b12","cross_cats_sorted":["astro-ph.SR","physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-07-06T20:10:10Z","title_canon_sha256":"34ba7d3cdd30921349ed79bae235e231acb3bad768010af145ccacec00aa0453"},"schema_version":"1.0","source":{"id":"1607.01802","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1607.01802","created_at":"2026-05-18T00:53:33Z"},{"alias_kind":"arxiv_version","alias_value":"1607.01802v1","created_at":"2026-05-18T00:53:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.01802","created_at":"2026-05-18T00:53:33Z"},{"alias_kind":"pith_short_12","alias_value":"HWOVFMUO4TPE","created_at":"2026-05-18T12:30:22Z"},{"alias_kind":"pith_short_16","alias_value":"HWOVFMUO4TPE5SSD","created_at":"2026-05-18T12:30:22Z"},{"alias_kind":"pith_short_8","alias_value":"HWOVFMUO","created_at":"2026-05-18T12:30:22Z"}],"graph_snapshots":[{"event_id":"sha256:0d15356b1dde691921bd3401c1df0c82c68c7217e25ec7d0e7063c1a3069d5e8","target":"graph","created_at":"2026-05-18T00:53:33Z","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":"We present a highly-parallel multi-frequency hybrid radiation hydrodynamics algorithm that combines a spatially-adaptive long characteristics method for the radiation field from point sources with a moment method that handles the diffuse radiation field produced by a volume-filling fluid. Our Hybrid Adaptive Ray-Moment Method (HARM$^2$) operates on patch-based adaptive grids, is compatible with asynchronous time stepping, and works with any moment method. In comparison to previous long characteristics methods, we have greatly improved the parallel performance of the adaptive long-characteristi","authors_text":"Aaron T. Lee, Anna L. Rosen, Jeffrey S. Oishi, Mark R. Krumholz, Richard I. Klein","cross_cats":["astro-ph.SR","physics.comp-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-07-06T20:10:10Z","title":"Hybrid Adaptive Ray-Moment Method (HARM$^2$): A Highly Parallel Method for Radiation Hydrodynamics on Adaptive Grids"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.01802","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:f7d4b187e5a8609191e912d3d79a717c4dcecfb4d3158c7fb0cc52673266cf70","target":"record","created_at":"2026-05-18T00:53:33Z","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":"4d944fa970421633d7838ec7d5ea2963ac74e45072817b5184a86162603e3b12","cross_cats_sorted":["astro-ph.SR","physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-07-06T20:10:10Z","title_canon_sha256":"34ba7d3cdd30921349ed79bae235e231acb3bad768010af145ccacec00aa0453"},"schema_version":"1.0","source":{"id":"1607.01802","kind":"arxiv","version":1}},"canonical_sha256":"3d9d52b28ee4de4eca430cfdfb8551619ec76bcfc3d6d6ec8495dd29808fd598","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3d9d52b28ee4de4eca430cfdfb8551619ec76bcfc3d6d6ec8495dd29808fd598","first_computed_at":"2026-05-18T00:53:33.896011Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:53:33.896011Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"u+tEt3TQHS1JUlVmopfogLWZGFGBoN+H6wLuGRA2snkyyCmu3bUtxbFKQJvZJGm7vmD23x6KSzyZG2eV5qi4Bw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:53:33.896549Z","signed_message":"canonical_sha256_bytes"},"source_id":"1607.01802","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f7d4b187e5a8609191e912d3d79a717c4dcecfb4d3158c7fb0cc52673266cf70","sha256:0d15356b1dde691921bd3401c1df0c82c68c7217e25ec7d0e7063c1a3069d5e8"],"state_sha256":"1c0bec1d5c290484cf880e3745d2517880d9378fc7baa3d10eabcd5367f6d01d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"C5SYzu5jHxbHV6xwUJa1wCr8yN9Q8+Kp4toOfIOx69aew2UR9hR4JSdDWUdDICfjuZ4QvJalF1HlpQ5ypfhUCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T18:35:10.715243Z","bundle_sha256":"625c18fa2d74d755c0b3705bc9d91a4c5f3d732f9d29e642996fcaba3d9a87ec"}}