{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:U55WEPXEHBVIR4YNSIIYPYYHY6","short_pith_number":"pith:U55WEPXE","canonical_record":{"source":{"id":"1708.01622","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-08-04T18:00:52Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"ed328a017b134368dd40d87f423575f03564e162a6497174c25c6b5745b75b67","abstract_canon_sha256":"a2ea0b154255abec2b30eec299e90c3c57867cc88328d90ffb7db2e39e22fd29"},"schema_version":"1.0"},"canonical_sha256":"a77b623ee4386a88f30d921187e307c7a8b8f1be635d4cbd97b0322741648f1b","source":{"kind":"arxiv","id":"1708.01622","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.01622","created_at":"2026-05-18T00:33:16Z"},{"alias_kind":"arxiv_version","alias_value":"1708.01622v1","created_at":"2026-05-18T00:33:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.01622","created_at":"2026-05-18T00:33:16Z"},{"alias_kind":"pith_short_12","alias_value":"U55WEPXEHBVI","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_16","alias_value":"U55WEPXEHBVIR4YN","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_8","alias_value":"U55WEPXE","created_at":"2026-05-18T12:31:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:U55WEPXEHBVIR4YNSIIYPYYHY6","target":"record","payload":{"canonical_record":{"source":{"id":"1708.01622","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-08-04T18:00:52Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"ed328a017b134368dd40d87f423575f03564e162a6497174c25c6b5745b75b67","abstract_canon_sha256":"a2ea0b154255abec2b30eec299e90c3c57867cc88328d90ffb7db2e39e22fd29"},"schema_version":"1.0"},"canonical_sha256":"a77b623ee4386a88f30d921187e307c7a8b8f1be635d4cbd97b0322741648f1b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:33:16.037433Z","signature_b64":"BFPCVT1lgJOHnYU+JYvKUd+vTaDxYMe9hSzfqL9ZYFI1QYdVEJzfuwDivxjrS6LbM/aIL55SM4TQSdzuFeKaDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a77b623ee4386a88f30d921187e307c7a8b8f1be635d4cbd97b0322741648f1b","last_reissued_at":"2026-05-18T00:33:16.036835Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:33:16.036835Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1708.01622","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":"2026-05-18T00:33:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YeQnnU5GFi8lQBrcZ9AdBzhAie6XPJXzFDT4aKe41+G+raTWF4HYWQegdeK1JuWYX5gVAOjGfcu0zgalRa/CBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T10:31:34.259912Z"},"content_sha256":"75b8dd2a607418abb6f77d50601a8b1fc5a8e58aeb5520df1eb00722bc4a2702","schema_version":"1.0","event_id":"sha256:75b8dd2a607418abb6f77d50601a8b1fc5a8e58aeb5520df1eb00722bc4a2702"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:U55WEPXEHBVIR4YNSIIYPYYHY6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The structure of young embedded protostellar discs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"Benjamin A. MacFarlane, Dimitris Stamatellos","submitted_at":"2017-08-04T18:00:52Z","abstract_excerpt":"Young protostellar discs provide the initial conditions for planet formation. The properties of these discs may be different from those of late-phase (T Tauri) discs due to continuing infall from the envelope and protostellar variability resulting from irregular gas accretion. We use a set of hydrodynamic simulations to determine the structure of discs forming in collapsing molecular clouds. We examine how radiative feedback from the host protostar affects the disc properties by examining three regimes: without radiative feedback, with continuous radiative feedback and with episodic feedback, "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.01622","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":"2026-05-18T00:33:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BJUaXSa9gwN9kFXKbpixhZPA8szKfLNDj50O4/G6/OLhkd51kaJdhCmLvK/tUYWKnpQCbp1q3UiL4ogDNhFvBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T10:31:34.260257Z"},"content_sha256":"1a8a1b8a6f9ea15349f08302124c81dcc7e8c5199c3dad917e1611ccf296222c","schema_version":"1.0","event_id":"sha256:1a8a1b8a6f9ea15349f08302124c81dcc7e8c5199c3dad917e1611ccf296222c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/U55WEPXEHBVIR4YNSIIYPYYHY6/bundle.json","state_url":"https://pith.science/pith/U55WEPXEHBVIR4YNSIIYPYYHY6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/U55WEPXEHBVIR4YNSIIYPYYHY6/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":"2026-05-28T10:31:34Z","links":{"resolver":"https://pith.science/pith/U55WEPXEHBVIR4YNSIIYPYYHY6","bundle":"https://pith.science/pith/U55WEPXEHBVIR4YNSIIYPYYHY6/bundle.json","state":"https://pith.science/pith/U55WEPXEHBVIR4YNSIIYPYYHY6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/U55WEPXEHBVIR4YNSIIYPYYHY6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:U55WEPXEHBVIR4YNSIIYPYYHY6","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":"a2ea0b154255abec2b30eec299e90c3c57867cc88328d90ffb7db2e39e22fd29","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-08-04T18:00:52Z","title_canon_sha256":"ed328a017b134368dd40d87f423575f03564e162a6497174c25c6b5745b75b67"},"schema_version":"1.0","source":{"id":"1708.01622","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.01622","created_at":"2026-05-18T00:33:16Z"},{"alias_kind":"arxiv_version","alias_value":"1708.01622v1","created_at":"2026-05-18T00:33:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.01622","created_at":"2026-05-18T00:33:16Z"},{"alias_kind":"pith_short_12","alias_value":"U55WEPXEHBVI","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_16","alias_value":"U55WEPXEHBVIR4YN","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_8","alias_value":"U55WEPXE","created_at":"2026-05-18T12:31:46Z"}],"graph_snapshots":[{"event_id":"sha256:1a8a1b8a6f9ea15349f08302124c81dcc7e8c5199c3dad917e1611ccf296222c","target":"graph","created_at":"2026-05-18T00:33:16Z","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":"Young protostellar discs provide the initial conditions for planet formation. The properties of these discs may be different from those of late-phase (T Tauri) discs due to continuing infall from the envelope and protostellar variability resulting from irregular gas accretion. We use a set of hydrodynamic simulations to determine the structure of discs forming in collapsing molecular clouds. We examine how radiative feedback from the host protostar affects the disc properties by examining three regimes: without radiative feedback, with continuous radiative feedback and with episodic feedback, ","authors_text":"Benjamin A. MacFarlane, Dimitris Stamatellos","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-08-04T18:00:52Z","title":"The structure of young embedded protostellar discs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.01622","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":"sha256:75b8dd2a607418abb6f77d50601a8b1fc5a8e58aeb5520df1eb00722bc4a2702","target":"record","created_at":"2026-05-18T00:33:16Z","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":"a2ea0b154255abec2b30eec299e90c3c57867cc88328d90ffb7db2e39e22fd29","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-08-04T18:00:52Z","title_canon_sha256":"ed328a017b134368dd40d87f423575f03564e162a6497174c25c6b5745b75b67"},"schema_version":"1.0","source":{"id":"1708.01622","kind":"arxiv","version":1}},"canonical_sha256":"a77b623ee4386a88f30d921187e307c7a8b8f1be635d4cbd97b0322741648f1b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a77b623ee4386a88f30d921187e307c7a8b8f1be635d4cbd97b0322741648f1b","first_computed_at":"2026-05-18T00:33:16.036835Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:33:16.036835Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BFPCVT1lgJOHnYU+JYvKUd+vTaDxYMe9hSzfqL9ZYFI1QYdVEJzfuwDivxjrS6LbM/aIL55SM4TQSdzuFeKaDw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:33:16.037433Z","signed_message":"canonical_sha256_bytes"},"source_id":"1708.01622","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:75b8dd2a607418abb6f77d50601a8b1fc5a8e58aeb5520df1eb00722bc4a2702","sha256:1a8a1b8a6f9ea15349f08302124c81dcc7e8c5199c3dad917e1611ccf296222c"],"state_sha256":"46600c0f8beeb9ebe0e27302463b928871ec0f5c87d854292c5571e68b3a14cb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6dzstnDshX064EX4pPz6VYITo7vl7wFgbAGRos1HKjTXgjFD7SVEYD8ei9VgMnUPlQNFQRPB++gZjKsOgIVlAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T10:31:34.262193Z","bundle_sha256":"5c28441432399160da04b79cb7afca280822f4e795131aa012cf6d7749a4dcd0"}}