{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:5RAA6OBRDVPJRSB7AKDH5AHMZT","short_pith_number":"pith:5RAA6OBR","canonical_record":{"source":{"id":"1403.5555","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-03-21T19:59:37Z","cross_cats_sorted":[],"title_canon_sha256":"eadb5563e60af6ee59f33a5cec79500b51aac749e62aab6310a8939f71d1d4ae","abstract_canon_sha256":"3e70c06d8160a95fdc618282e4f18929bc57f0357db66112e5599f1c15552d81"},"schema_version":"1.0"},"canonical_sha256":"ec400f38311d5e98c83f02867e80ecccd58182985c4fd4a173d29f4bfd3a8d10","source":{"kind":"arxiv","id":"1403.5555","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1403.5555","created_at":"2026-05-18T00:16:51Z"},{"alias_kind":"arxiv_version","alias_value":"1403.5555v3","created_at":"2026-05-18T00:16:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1403.5555","created_at":"2026-05-18T00:16:51Z"},{"alias_kind":"pith_short_12","alias_value":"5RAA6OBRDVPJ","created_at":"2026-05-18T12:28:14Z"},{"alias_kind":"pith_short_16","alias_value":"5RAA6OBRDVPJRSB7","created_at":"2026-05-18T12:28:14Z"},{"alias_kind":"pith_short_8","alias_value":"5RAA6OBR","created_at":"2026-05-18T12:28:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:5RAA6OBRDVPJRSB7AKDH5AHMZT","target":"record","payload":{"canonical_record":{"source":{"id":"1403.5555","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-03-21T19:59:37Z","cross_cats_sorted":[],"title_canon_sha256":"eadb5563e60af6ee59f33a5cec79500b51aac749e62aab6310a8939f71d1d4ae","abstract_canon_sha256":"3e70c06d8160a95fdc618282e4f18929bc57f0357db66112e5599f1c15552d81"},"schema_version":"1.0"},"canonical_sha256":"ec400f38311d5e98c83f02867e80ecccd58182985c4fd4a173d29f4bfd3a8d10","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:16:51.080786Z","signature_b64":"PCJPxPbbXgRYPJYNdiUXI7LCOrYFY+KJyB0ZRRdUIcpm69QgWHzho9HRgY6yMuFx1Ufg0y3Hm142NkzPW0czBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ec400f38311d5e98c83f02867e80ecccd58182985c4fd4a173d29f4bfd3a8d10","last_reissued_at":"2026-05-18T00:16:51.080002Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:16:51.080002Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1403.5555","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:16:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Wk8Qqh048fYY5Bw957fQAZjywj5iELM79DPK6AdUQJjSy2fbHEgcH98I8EQ/37bjgz85CXdxC/AfY5uuD7/wAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T06:44:46.592796Z"},"content_sha256":"258bdd20f01c3aebc2b8e22cb72fefd4eba3423e24b7cc1d69376dff65976e54","schema_version":"1.0","event_id":"sha256:258bdd20f01c3aebc2b8e22cb72fefd4eba3423e24b7cc1d69376dff65976e54"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:5RAA6OBRDVPJRSB7AKDH5AHMZT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Probing large-scale structure with large samples of X-ray selected AGN: I Baryonic acoustic oscillations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Alexander Kolodzig, Gert H\\\"utsi, Marat Gilfanov, Rashid Sunyaev","submitted_at":"2014-03-21T19:59:37Z","abstract_excerpt":"We investigate the potential of large X-ray-selected AGN samples for detecting baryonic acoustic oscillations (BAO). Though AGN selection in X-ray band is very clean and efficient, it does not provide redshift information, and thus needs to be complemented with an optical follow-up. The main focus of this study is (i) to find the requirements needed for the quality of the optical follow-up and (ii) to formulate the optimal strategy of the X-ray survey, in order to detect the BAO. We demonstrate that redshift accuracy of $\\sigma_0=10^{-2}$ at $z=1$ and the catastrophic failure rate of $f_{\\rm f"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1403.5555","kind":"arxiv","version":3},"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":"2026-05-18T00:16:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"s76NxblgRNHgLRyIeTzp2S17wSNh6A91mrgvVdX0LmtUqNaao3qJCYZQzWjWYvct6QYiRBtJ/K58jSM6Ek9SAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T06:44:46.593567Z"},"content_sha256":"c7c260b685545dbd9af608b32f26ffdaae7112731aba4acb9aba44f23387652d","schema_version":"1.0","event_id":"sha256:c7c260b685545dbd9af608b32f26ffdaae7112731aba4acb9aba44f23387652d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5RAA6OBRDVPJRSB7AKDH5AHMZT/bundle.json","state_url":"https://pith.science/pith/5RAA6OBRDVPJRSB7AKDH5AHMZT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5RAA6OBRDVPJRSB7AKDH5AHMZT/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":"2026-05-31T06:44:46Z","links":{"resolver":"https://pith.science/pith/5RAA6OBRDVPJRSB7AKDH5AHMZT","bundle":"https://pith.science/pith/5RAA6OBRDVPJRSB7AKDH5AHMZT/bundle.json","state":"https://pith.science/pith/5RAA6OBRDVPJRSB7AKDH5AHMZT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5RAA6OBRDVPJRSB7AKDH5AHMZT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:5RAA6OBRDVPJRSB7AKDH5AHMZT","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":"3e70c06d8160a95fdc618282e4f18929bc57f0357db66112e5599f1c15552d81","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-03-21T19:59:37Z","title_canon_sha256":"eadb5563e60af6ee59f33a5cec79500b51aac749e62aab6310a8939f71d1d4ae"},"schema_version":"1.0","source":{"id":"1403.5555","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1403.5555","created_at":"2026-05-18T00:16:51Z"},{"alias_kind":"arxiv_version","alias_value":"1403.5555v3","created_at":"2026-05-18T00:16:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1403.5555","created_at":"2026-05-18T00:16:51Z"},{"alias_kind":"pith_short_12","alias_value":"5RAA6OBRDVPJ","created_at":"2026-05-18T12:28:14Z"},{"alias_kind":"pith_short_16","alias_value":"5RAA6OBRDVPJRSB7","created_at":"2026-05-18T12:28:14Z"},{"alias_kind":"pith_short_8","alias_value":"5RAA6OBR","created_at":"2026-05-18T12:28:14Z"}],"graph_snapshots":[{"event_id":"sha256:c7c260b685545dbd9af608b32f26ffdaae7112731aba4acb9aba44f23387652d","target":"graph","created_at":"2026-05-18T00:16:51Z","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 investigate the potential of large X-ray-selected AGN samples for detecting baryonic acoustic oscillations (BAO). Though AGN selection in X-ray band is very clean and efficient, it does not provide redshift information, and thus needs to be complemented with an optical follow-up. The main focus of this study is (i) to find the requirements needed for the quality of the optical follow-up and (ii) to formulate the optimal strategy of the X-ray survey, in order to detect the BAO. We demonstrate that redshift accuracy of $\\sigma_0=10^{-2}$ at $z=1$ and the catastrophic failure rate of $f_{\\rm f","authors_text":"Alexander Kolodzig, Gert H\\\"utsi, Marat Gilfanov, Rashid Sunyaev","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-03-21T19:59:37Z","title":"Probing large-scale structure with large samples of X-ray selected AGN: I Baryonic acoustic oscillations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1403.5555","kind":"arxiv","version":3},"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":"sha256:258bdd20f01c3aebc2b8e22cb72fefd4eba3423e24b7cc1d69376dff65976e54","target":"record","created_at":"2026-05-18T00:16:51Z","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":"3e70c06d8160a95fdc618282e4f18929bc57f0357db66112e5599f1c15552d81","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-03-21T19:59:37Z","title_canon_sha256":"eadb5563e60af6ee59f33a5cec79500b51aac749e62aab6310a8939f71d1d4ae"},"schema_version":"1.0","source":{"id":"1403.5555","kind":"arxiv","version":3}},"canonical_sha256":"ec400f38311d5e98c83f02867e80ecccd58182985c4fd4a173d29f4bfd3a8d10","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ec400f38311d5e98c83f02867e80ecccd58182985c4fd4a173d29f4bfd3a8d10","first_computed_at":"2026-05-18T00:16:51.080002Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:16:51.080002Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PCJPxPbbXgRYPJYNdiUXI7LCOrYFY+KJyB0ZRRdUIcpm69QgWHzho9HRgY6yMuFx1Ufg0y3Hm142NkzPW0czBw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:16:51.080786Z","signed_message":"canonical_sha256_bytes"},"source_id":"1403.5555","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:258bdd20f01c3aebc2b8e22cb72fefd4eba3423e24b7cc1d69376dff65976e54","sha256:c7c260b685545dbd9af608b32f26ffdaae7112731aba4acb9aba44f23387652d"],"state_sha256":"50a28a9eb7e839d6c1daa146814b2f0901f21c0fb022a5b526776fdfd64ee925"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9QZxc2jQ/+5AiTACvpkRIvsOlUde6tQbMe1DICz29g2qT4N7aPmm+lXMmn7eU5suzT9065b2/UBigu4z9HFEBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T06:44:46.597648Z","bundle_sha256":"9fd4f99479bd45e9fe204527f806458a03454684f970dad29f5deb575ea118e7"}}