{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:7Z426LBCGC6MY3JOGDFCPI4FRX","short_pith_number":"pith:7Z426LBC","canonical_record":{"source":{"id":"1711.11451","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-11-29T16:32:04Z","cross_cats_sorted":["astro-ph.HE","quant-ph"],"title_canon_sha256":"8dfa50230836f225c0bc459d1c199ced2cb9e21baae1c1fe0bd74534c90d0d94","abstract_canon_sha256":"24046bcfda7b0a9e4c5d0db6134ff9e886c269893a17c37d67e9d9e3bd674ee1"},"schema_version":"1.0"},"canonical_sha256":"fe79af2c2230bccc6d2e30ca27a3858dee3dd5dacbb775cbc7d9e251057e5475","source":{"kind":"arxiv","id":"1711.11451","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.11451","created_at":"2026-05-18T00:23:29Z"},{"alias_kind":"arxiv_version","alias_value":"1711.11451v1","created_at":"2026-05-18T00:23:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.11451","created_at":"2026-05-18T00:23:29Z"},{"alias_kind":"pith_short_12","alias_value":"7Z426LBCGC6M","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_16","alias_value":"7Z426LBCGC6MY3JO","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_8","alias_value":"7Z426LBC","created_at":"2026-05-18T12:31:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:7Z426LBCGC6MY3JOGDFCPI4FRX","target":"record","payload":{"canonical_record":{"source":{"id":"1711.11451","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-11-29T16:32:04Z","cross_cats_sorted":["astro-ph.HE","quant-ph"],"title_canon_sha256":"8dfa50230836f225c0bc459d1c199ced2cb9e21baae1c1fe0bd74534c90d0d94","abstract_canon_sha256":"24046bcfda7b0a9e4c5d0db6134ff9e886c269893a17c37d67e9d9e3bd674ee1"},"schema_version":"1.0"},"canonical_sha256":"fe79af2c2230bccc6d2e30ca27a3858dee3dd5dacbb775cbc7d9e251057e5475","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:23:29.062440Z","signature_b64":"0OuoXczKm7uzeCTojCall+47N/jkA3HANXE2QONsQg0IrWdMmzbV7DHejCTxzVkGxUOTY/lO7bNL5yUREouHCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fe79af2c2230bccc6d2e30ca27a3858dee3dd5dacbb775cbc7d9e251057e5475","last_reissued_at":"2026-05-18T00:23:29.061901Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:23:29.061901Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1711.11451","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":"2026-05-18T00:23:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LJ4voLVovGVxCQcfbqmDepsIBqm/QjNkW42rVpEmHXZLnb6q8JWFb9+rPvsXhpR8MiR8xiqeKPJ6l8YD3wBFCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T19:55:10.926572Z"},"content_sha256":"a494b95e9751d1953c07075060f4d837b3d39c80ca0182ea8bb23adc70e8caa7","schema_version":"1.0","event_id":"sha256:a494b95e9751d1953c07075060f4d837b3d39c80ca0182ea8bb23adc70e8caa7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:7Z426LBCGC6MY3JOGDFCPI4FRX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Does light from steady sources bear any observable imprint of the dispersive intergalactic medium?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE","quant-ph"],"primary_cat":"astro-ph.IM","authors_text":"Lingze Duan, Richard Lieu","submitted_at":"2017-11-29T16:32:04Z","abstract_excerpt":"There has recently been some interest in the prospect of detecting ionized intergalactic baryons by examining the properties of incoherent light from background cosmological sources, namely quasars. Although the paper by \\cite{lieu13} proposed a way forward, it was refuted by the later theoretical work of \\cite{hir14} and observational study of \\cite{hal16}. In this paper we investigated in detail the manner in which incoherent radiation passes through a dispersive medium both from the frameworks of classical and quantum electrodynamics, which led us to conclude that the premise of \\cite{lieu1"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.11451","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":"2026-05-18T00:23:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TjdOL0i4k3fyn4nqhFsPU1Z+Occ64hOHS4OWDoTzg8ea841ApvEayUGBuAh7Zyc01509Nzk9+Mix7eqB4JfhDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T19:55:10.926921Z"},"content_sha256":"11f86f02d5c4f9f26053b693e6e1bd48c143fbe7352c59944b140ae607a01c0f","schema_version":"1.0","event_id":"sha256:11f86f02d5c4f9f26053b693e6e1bd48c143fbe7352c59944b140ae607a01c0f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7Z426LBCGC6MY3JOGDFCPI4FRX/bundle.json","state_url":"https://pith.science/pith/7Z426LBCGC6MY3JOGDFCPI4FRX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7Z426LBCGC6MY3JOGDFCPI4FRX/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":"2026-06-03T19:55:10Z","links":{"resolver":"https://pith.science/pith/7Z426LBCGC6MY3JOGDFCPI4FRX","bundle":"https://pith.science/pith/7Z426LBCGC6MY3JOGDFCPI4FRX/bundle.json","state":"https://pith.science/pith/7Z426LBCGC6MY3JOGDFCPI4FRX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7Z426LBCGC6MY3JOGDFCPI4FRX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:7Z426LBCGC6MY3JOGDFCPI4FRX","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":"24046bcfda7b0a9e4c5d0db6134ff9e886c269893a17c37d67e9d9e3bd674ee1","cross_cats_sorted":["astro-ph.HE","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-11-29T16:32:04Z","title_canon_sha256":"8dfa50230836f225c0bc459d1c199ced2cb9e21baae1c1fe0bd74534c90d0d94"},"schema_version":"1.0","source":{"id":"1711.11451","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.11451","created_at":"2026-05-18T00:23:29Z"},{"alias_kind":"arxiv_version","alias_value":"1711.11451v1","created_at":"2026-05-18T00:23:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.11451","created_at":"2026-05-18T00:23:29Z"},{"alias_kind":"pith_short_12","alias_value":"7Z426LBCGC6M","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_16","alias_value":"7Z426LBCGC6MY3JO","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_8","alias_value":"7Z426LBC","created_at":"2026-05-18T12:31:05Z"}],"graph_snapshots":[{"event_id":"sha256:11f86f02d5c4f9f26053b693e6e1bd48c143fbe7352c59944b140ae607a01c0f","target":"graph","created_at":"2026-05-18T00:23:29Z","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":"There has recently been some interest in the prospect of detecting ionized intergalactic baryons by examining the properties of incoherent light from background cosmological sources, namely quasars. Although the paper by \\cite{lieu13} proposed a way forward, it was refuted by the later theoretical work of \\cite{hir14} and observational study of \\cite{hal16}. In this paper we investigated in detail the manner in which incoherent radiation passes through a dispersive medium both from the frameworks of classical and quantum electrodynamics, which led us to conclude that the premise of \\cite{lieu1","authors_text":"Lingze Duan, Richard Lieu","cross_cats":["astro-ph.HE","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-11-29T16:32:04Z","title":"Does light from steady sources bear any observable imprint of the dispersive intergalactic medium?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.11451","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:a494b95e9751d1953c07075060f4d837b3d39c80ca0182ea8bb23adc70e8caa7","target":"record","created_at":"2026-05-18T00:23:29Z","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":"24046bcfda7b0a9e4c5d0db6134ff9e886c269893a17c37d67e9d9e3bd674ee1","cross_cats_sorted":["astro-ph.HE","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-11-29T16:32:04Z","title_canon_sha256":"8dfa50230836f225c0bc459d1c199ced2cb9e21baae1c1fe0bd74534c90d0d94"},"schema_version":"1.0","source":{"id":"1711.11451","kind":"arxiv","version":1}},"canonical_sha256":"fe79af2c2230bccc6d2e30ca27a3858dee3dd5dacbb775cbc7d9e251057e5475","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fe79af2c2230bccc6d2e30ca27a3858dee3dd5dacbb775cbc7d9e251057e5475","first_computed_at":"2026-05-18T00:23:29.061901Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:23:29.061901Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0OuoXczKm7uzeCTojCall+47N/jkA3HANXE2QONsQg0IrWdMmzbV7DHejCTxzVkGxUOTY/lO7bNL5yUREouHCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:23:29.062440Z","signed_message":"canonical_sha256_bytes"},"source_id":"1711.11451","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a494b95e9751d1953c07075060f4d837b3d39c80ca0182ea8bb23adc70e8caa7","sha256:11f86f02d5c4f9f26053b693e6e1bd48c143fbe7352c59944b140ae607a01c0f"],"state_sha256":"ce2dba37e27777b44ddab07705a7b1349da8a70f8532c5e615b93697187c46dc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wENSjvbTv+dZ+wseq+yNwIS5lSJzeNwK7JxvAB0gdH0iwQhPU5ynw8NuS52LlbTUGe24bTyhgZ8ScrE+D2h2AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T19:55:10.928866Z","bundle_sha256":"5c9374597fb6be28ce19b0e62efc412bf9e531f823d70f6a04aa9bf000cd0dd0"}}