{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:BNLDKZZUQROREYW6CFLLQSFAZL","short_pith_number":"pith:BNLDKZZU","canonical_record":{"source":{"id":"1102.1980","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-02-09T21:00:09Z","cross_cats_sorted":[],"title_canon_sha256":"268918841d5997e43361c6261a2362ba73763f7e77c459c3a2a027753651e250","abstract_canon_sha256":"86f552be3d1437c648ced8e72f82de1edeedbf86ee5aba103d42f6043b017d4c"},"schema_version":"1.0"},"canonical_sha256":"0b56356734845d1262de1156b848a0caca0c0e70da6ad03e6a2f3df2815563c1","source":{"kind":"arxiv","id":"1102.1980","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1102.1980","created_at":"2026-05-18T02:03:14Z"},{"alias_kind":"arxiv_version","alias_value":"1102.1980v1","created_at":"2026-05-18T02:03:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1102.1980","created_at":"2026-05-18T02:03:14Z"},{"alias_kind":"pith_short_12","alias_value":"BNLDKZZUQROR","created_at":"2026-05-18T12:26:24Z"},{"alias_kind":"pith_short_16","alias_value":"BNLDKZZUQROREYW6","created_at":"2026-05-18T12:26:24Z"},{"alias_kind":"pith_short_8","alias_value":"BNLDKZZU","created_at":"2026-05-18T12:26:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:BNLDKZZUQROREYW6CFLLQSFAZL","target":"record","payload":{"canonical_record":{"source":{"id":"1102.1980","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-02-09T21:00:09Z","cross_cats_sorted":[],"title_canon_sha256":"268918841d5997e43361c6261a2362ba73763f7e77c459c3a2a027753651e250","abstract_canon_sha256":"86f552be3d1437c648ced8e72f82de1edeedbf86ee5aba103d42f6043b017d4c"},"schema_version":"1.0"},"canonical_sha256":"0b56356734845d1262de1156b848a0caca0c0e70da6ad03e6a2f3df2815563c1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:03:14.652218Z","signature_b64":"ucH9GsrUcMSSLja5gRG05yDZw0BhGRsRbtyKEIpgbAMWcRL5RXE+N1egQRqmFrbO0Ngs7t2qlhf7P3h85eRnBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0b56356734845d1262de1156b848a0caca0c0e70da6ad03e6a2f3df2815563c1","last_reissued_at":"2026-05-18T02:03:14.651587Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:03:14.651587Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1102.1980","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":"2026-05-18T02:03:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xx7BMF1lnpRzqC7ZTwVXo26QWFWYFEIZdZxOUQw6M9XAPyfzmIbZ9f5B+guKl2y3pXIurWOqOw4J2uUw1CmWCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T17:41:22.500263Z"},"content_sha256":"6e5c2e17e2595c5d6cc235916fa77a72212c66067f7a4be2caee984af2eac3e5","schema_version":"1.0","event_id":"sha256:6e5c2e17e2595c5d6cc235916fa77a72212c66067f7a4be2caee984af2eac3e5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:BNLDKZZUQROREYW6CFLLQSFAZL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Multiple Absorption-Line Spectroscopy of the Intergalactic Medium. I. Model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Brian A. Keeney, Charles W. Danforth, J. Michael Shull, John T. Stocke, Yangsen Yao","submitted_at":"2011-02-09T21:00:09Z","abstract_excerpt":"We present a physically-based absorption-line model for the spectroscopic study of the intergalactic medium (IGM). This model adopts results from Cloudy simulations and theoretical calculations by Gnat and Sternberg (2007) to examine the resulting observational signatures of the absorbing gas with the following ionization scenarios: collisional ionization equilibrium (CIE), photoionization equilibrium, hybrid (photo- plus collisional ionization), and non-equilibrium cooling. As a demonstration, we apply this model to new observations made with the Cosmic Origins Spectrograph aboard the Hubble "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1102.1980","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":"2026-05-18T02:03:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cYZvrdQBAfq8vcNR47RrONzoTwoLgkHn/CRShxyFkAm790sTYRAfCkm6Zu2LUdi6+YgCnSL/nxP9MFfASGi9AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T17:41:22.500955Z"},"content_sha256":"4f566e76bfcd95e0ddc11d453f6c1187a2d8d89b321921735aa5a0658c7e39de","schema_version":"1.0","event_id":"sha256:4f566e76bfcd95e0ddc11d453f6c1187a2d8d89b321921735aa5a0658c7e39de"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BNLDKZZUQROREYW6CFLLQSFAZL/bundle.json","state_url":"https://pith.science/pith/BNLDKZZUQROREYW6CFLLQSFAZL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BNLDKZZUQROREYW6CFLLQSFAZL/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":"2026-05-30T17:41:22Z","links":{"resolver":"https://pith.science/pith/BNLDKZZUQROREYW6CFLLQSFAZL","bundle":"https://pith.science/pith/BNLDKZZUQROREYW6CFLLQSFAZL/bundle.json","state":"https://pith.science/pith/BNLDKZZUQROREYW6CFLLQSFAZL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BNLDKZZUQROREYW6CFLLQSFAZL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:BNLDKZZUQROREYW6CFLLQSFAZL","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":"86f552be3d1437c648ced8e72f82de1edeedbf86ee5aba103d42f6043b017d4c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-02-09T21:00:09Z","title_canon_sha256":"268918841d5997e43361c6261a2362ba73763f7e77c459c3a2a027753651e250"},"schema_version":"1.0","source":{"id":"1102.1980","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1102.1980","created_at":"2026-05-18T02:03:14Z"},{"alias_kind":"arxiv_version","alias_value":"1102.1980v1","created_at":"2026-05-18T02:03:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1102.1980","created_at":"2026-05-18T02:03:14Z"},{"alias_kind":"pith_short_12","alias_value":"BNLDKZZUQROR","created_at":"2026-05-18T12:26:24Z"},{"alias_kind":"pith_short_16","alias_value":"BNLDKZZUQROREYW6","created_at":"2026-05-18T12:26:24Z"},{"alias_kind":"pith_short_8","alias_value":"BNLDKZZU","created_at":"2026-05-18T12:26:24Z"}],"graph_snapshots":[{"event_id":"sha256:4f566e76bfcd95e0ddc11d453f6c1187a2d8d89b321921735aa5a0658c7e39de","target":"graph","created_at":"2026-05-18T02:03:14Z","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 physically-based absorption-line model for the spectroscopic study of the intergalactic medium (IGM). This model adopts results from Cloudy simulations and theoretical calculations by Gnat and Sternberg (2007) to examine the resulting observational signatures of the absorbing gas with the following ionization scenarios: collisional ionization equilibrium (CIE), photoionization equilibrium, hybrid (photo- plus collisional ionization), and non-equilibrium cooling. As a demonstration, we apply this model to new observations made with the Cosmic Origins Spectrograph aboard the Hubble ","authors_text":"Brian A. Keeney, Charles W. Danforth, J. Michael Shull, John T. Stocke, Yangsen Yao","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-02-09T21:00:09Z","title":"Multiple Absorption-Line Spectroscopy of the Intergalactic Medium. I. Model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1102.1980","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":"sha256:6e5c2e17e2595c5d6cc235916fa77a72212c66067f7a4be2caee984af2eac3e5","target":"record","created_at":"2026-05-18T02:03:14Z","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":"86f552be3d1437c648ced8e72f82de1edeedbf86ee5aba103d42f6043b017d4c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-02-09T21:00:09Z","title_canon_sha256":"268918841d5997e43361c6261a2362ba73763f7e77c459c3a2a027753651e250"},"schema_version":"1.0","source":{"id":"1102.1980","kind":"arxiv","version":1}},"canonical_sha256":"0b56356734845d1262de1156b848a0caca0c0e70da6ad03e6a2f3df2815563c1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0b56356734845d1262de1156b848a0caca0c0e70da6ad03e6a2f3df2815563c1","first_computed_at":"2026-05-18T02:03:14.651587Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:03:14.651587Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ucH9GsrUcMSSLja5gRG05yDZw0BhGRsRbtyKEIpgbAMWcRL5RXE+N1egQRqmFrbO0Ngs7t2qlhf7P3h85eRnBw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:03:14.652218Z","signed_message":"canonical_sha256_bytes"},"source_id":"1102.1980","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6e5c2e17e2595c5d6cc235916fa77a72212c66067f7a4be2caee984af2eac3e5","sha256:4f566e76bfcd95e0ddc11d453f6c1187a2d8d89b321921735aa5a0658c7e39de"],"state_sha256":"93ef1950779009981ad121355556205d407805875a2e755bf8a2c6e36e61e2db"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"X4yQdt/nucwSqcnhNskpvOhvCXCwRsXl5gXzjQgfkwLsYtCqLbZxTUgK1u4ysbgnuVJMHscUfZ9cxM+182kFAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T17:41:22.504240Z","bundle_sha256":"8de49143a6c5b871e4d17125ca5994ad072241a5a5e76b75a42b4e0146dd1f9d"}}