{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:IDKFRIGOAEWJOZYG76RUV3IFPK","short_pith_number":"pith:IDKFRIGO","canonical_record":{"source":{"id":"1601.05418","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-01-20T21:00:02Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"b1cf072b414a602eebb069a4fc5d96fb960fdbc832e7f70c1708a69f8fdb680c","abstract_canon_sha256":"bf2a5e9748262a218391ad35e1e208d940a911e272b7dc999d5e76448082bf37"},"schema_version":"1.0"},"canonical_sha256":"40d458a0ce012c976706ffa34aed057aade4c3a8e88eba4cba9c00e399208557","source":{"kind":"arxiv","id":"1601.05418","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.05418","created_at":"2026-05-18T01:04:50Z"},{"alias_kind":"arxiv_version","alias_value":"1601.05418v1","created_at":"2026-05-18T01:04:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.05418","created_at":"2026-05-18T01:04:50Z"},{"alias_kind":"pith_short_12","alias_value":"IDKFRIGOAEWJ","created_at":"2026-05-18T12:30:22Z"},{"alias_kind":"pith_short_16","alias_value":"IDKFRIGOAEWJOZYG","created_at":"2026-05-18T12:30:22Z"},{"alias_kind":"pith_short_8","alias_value":"IDKFRIGO","created_at":"2026-05-18T12:30:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:IDKFRIGOAEWJOZYG76RUV3IFPK","target":"record","payload":{"canonical_record":{"source":{"id":"1601.05418","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-01-20T21:00:02Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"b1cf072b414a602eebb069a4fc5d96fb960fdbc832e7f70c1708a69f8fdb680c","abstract_canon_sha256":"bf2a5e9748262a218391ad35e1e208d940a911e272b7dc999d5e76448082bf37"},"schema_version":"1.0"},"canonical_sha256":"40d458a0ce012c976706ffa34aed057aade4c3a8e88eba4cba9c00e399208557","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:04:50.168786Z","signature_b64":"FgWVzAehMWeYyNFh1d9m+Z4eb+JZXCSYXaaMvX8G335v0lz6DncdIV6xEh80pOKvZZeHmjR7Qz53RDtwsdQAAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"40d458a0ce012c976706ffa34aed057aade4c3a8e88eba4cba9c00e399208557","last_reissued_at":"2026-05-18T01:04:50.168174Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:04:50.168174Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1601.05418","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":"2026-05-18T01:04:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4YbpUKnnhdoAxQbu5IRiEn7yJUPTR2pGpVu5goArgGMNw6Pi6hTyd31dPmjRt10RFWnpKgmO+sjnEKdOF25wCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T18:13:26.293643Z"},"content_sha256":"4533d2ea6c889cedfdab36553320793d4fb7bf522aac5c83ab5682dd0530781f","schema_version":"1.0","event_id":"sha256:4533d2ea6c889cedfdab36553320793d4fb7bf522aac5c83ab5682dd0530781f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:IDKFRIGOAEWJOZYG76RUV3IFPK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Pair of O VI and Broad Ly-alpha Absorbers Probing Warm Gas in a Galaxy Group Environment at z ~ 0.4","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"Anand Narayanan, Bart P. Wakker, Blair D. Savage, Raghunathan Srianand, Sachin Pachat, Sowgat Muzahid, Vikram Khaire","submitted_at":"2016-01-20T21:00:02Z","abstract_excerpt":"We report on the detection of two O VI absorbers separated in velocity by 710 km/s at z ~ 0.4 towards the background quasar SBS0957+599. Both absorbers are multiphase systems tracing substantial reservoirs of warm baryons. The low and intermediate ionization metals in the first absorber is consistent with an origin in photoionized gas. The O VI has a velocity structure different from other metal species. The Ly-alpha shows the presence of a broad feature. The line widths for O VI and the broad Ly-alpha suggest T = 7.1 x 10^5 K. This warm medium is probing a baryonic column which is an order of"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.05418","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":"2026-05-18T01:04:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nVPoZSjTFscfQI+Tg8jRRFPeg5Pt/QyGMmtEbtIHp1UND8uBP0sNLSXAIDLl8teN4gqwlZ8U0govIxkLLf7qDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T18:13:26.294359Z"},"content_sha256":"5a975bff926879dda8acf72d3a5e0696ac93ea9fef17b2412d5d971619ae5bf9","schema_version":"1.0","event_id":"sha256:5a975bff926879dda8acf72d3a5e0696ac93ea9fef17b2412d5d971619ae5bf9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IDKFRIGOAEWJOZYG76RUV3IFPK/bundle.json","state_url":"https://pith.science/pith/IDKFRIGOAEWJOZYG76RUV3IFPK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IDKFRIGOAEWJOZYG76RUV3IFPK/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":"2026-05-29T18:13:26Z","links":{"resolver":"https://pith.science/pith/IDKFRIGOAEWJOZYG76RUV3IFPK","bundle":"https://pith.science/pith/IDKFRIGOAEWJOZYG76RUV3IFPK/bundle.json","state":"https://pith.science/pith/IDKFRIGOAEWJOZYG76RUV3IFPK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IDKFRIGOAEWJOZYG76RUV3IFPK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:IDKFRIGOAEWJOZYG76RUV3IFPK","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":"bf2a5e9748262a218391ad35e1e208d940a911e272b7dc999d5e76448082bf37","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-01-20T21:00:02Z","title_canon_sha256":"b1cf072b414a602eebb069a4fc5d96fb960fdbc832e7f70c1708a69f8fdb680c"},"schema_version":"1.0","source":{"id":"1601.05418","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.05418","created_at":"2026-05-18T01:04:50Z"},{"alias_kind":"arxiv_version","alias_value":"1601.05418v1","created_at":"2026-05-18T01:04:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.05418","created_at":"2026-05-18T01:04:50Z"},{"alias_kind":"pith_short_12","alias_value":"IDKFRIGOAEWJ","created_at":"2026-05-18T12:30:22Z"},{"alias_kind":"pith_short_16","alias_value":"IDKFRIGOAEWJOZYG","created_at":"2026-05-18T12:30:22Z"},{"alias_kind":"pith_short_8","alias_value":"IDKFRIGO","created_at":"2026-05-18T12:30:22Z"}],"graph_snapshots":[{"event_id":"sha256:5a975bff926879dda8acf72d3a5e0696ac93ea9fef17b2412d5d971619ae5bf9","target":"graph","created_at":"2026-05-18T01:04:50Z","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 report on the detection of two O VI absorbers separated in velocity by 710 km/s at z ~ 0.4 towards the background quasar SBS0957+599. Both absorbers are multiphase systems tracing substantial reservoirs of warm baryons. The low and intermediate ionization metals in the first absorber is consistent with an origin in photoionized gas. The O VI has a velocity structure different from other metal species. The Ly-alpha shows the presence of a broad feature. The line widths for O VI and the broad Ly-alpha suggest T = 7.1 x 10^5 K. This warm medium is probing a baryonic column which is an order of","authors_text":"Anand Narayanan, Bart P. Wakker, Blair D. Savage, Raghunathan Srianand, Sachin Pachat, Sowgat Muzahid, Vikram Khaire","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-01-20T21:00:02Z","title":"A Pair of O VI and Broad Ly-alpha Absorbers Probing Warm Gas in a Galaxy Group Environment at z ~ 0.4"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.05418","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":"sha256:4533d2ea6c889cedfdab36553320793d4fb7bf522aac5c83ab5682dd0530781f","target":"record","created_at":"2026-05-18T01:04:50Z","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":"bf2a5e9748262a218391ad35e1e208d940a911e272b7dc999d5e76448082bf37","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-01-20T21:00:02Z","title_canon_sha256":"b1cf072b414a602eebb069a4fc5d96fb960fdbc832e7f70c1708a69f8fdb680c"},"schema_version":"1.0","source":{"id":"1601.05418","kind":"arxiv","version":1}},"canonical_sha256":"40d458a0ce012c976706ffa34aed057aade4c3a8e88eba4cba9c00e399208557","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"40d458a0ce012c976706ffa34aed057aade4c3a8e88eba4cba9c00e399208557","first_computed_at":"2026-05-18T01:04:50.168174Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:04:50.168174Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FgWVzAehMWeYyNFh1d9m+Z4eb+JZXCSYXaaMvX8G335v0lz6DncdIV6xEh80pOKvZZeHmjR7Qz53RDtwsdQAAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:04:50.168786Z","signed_message":"canonical_sha256_bytes"},"source_id":"1601.05418","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4533d2ea6c889cedfdab36553320793d4fb7bf522aac5c83ab5682dd0530781f","sha256:5a975bff926879dda8acf72d3a5e0696ac93ea9fef17b2412d5d971619ae5bf9"],"state_sha256":"47a79cf76bab5198f395ace105524f5caa59e83d3511783755d48f1e0bb835d3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qnRDyUzoktaqCHf1v7x806jAuoXKzCeNtckcgwvKWaSqqVPm1sUERLwHgty+qncETc8jPrtQy4ifr9rBpW2wBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T18:13:26.298035Z","bundle_sha256":"5cf66964fdbdbb6b984324ee97c78579c8403716ddf2400526afbd5135d28854"}}