{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:QYSJEJPQ6S7SO6RDAI3GRCZLK3","short_pith_number":"pith:QYSJEJPQ","canonical_record":{"source":{"id":"1103.2570","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-03-14T01:12:28Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"82f2b0444ee6fd9639871eb7063126d5d20ee2d0e03cea35fd309d17c0c03a64","abstract_canon_sha256":"72b516cdd84b24aa9b1496961553151a9e9c5d74c02e3380b10985630c6d332d"},"schema_version":"1.0"},"canonical_sha256":"86249225f0f4bf277a230236688b2b56df591a3f40262a6e9d1ddca7b1602d52","source":{"kind":"arxiv","id":"1103.2570","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1103.2570","created_at":"2026-05-18T02:02:54Z"},{"alias_kind":"arxiv_version","alias_value":"1103.2570v2","created_at":"2026-05-18T02:02:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1103.2570","created_at":"2026-05-18T02:02:54Z"},{"alias_kind":"pith_short_12","alias_value":"QYSJEJPQ6S7S","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_16","alias_value":"QYSJEJPQ6S7SO6RD","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_8","alias_value":"QYSJEJPQ","created_at":"2026-05-18T12:26:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:QYSJEJPQ6S7SO6RDAI3GRCZLK3","target":"record","payload":{"canonical_record":{"source":{"id":"1103.2570","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-03-14T01:12:28Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"82f2b0444ee6fd9639871eb7063126d5d20ee2d0e03cea35fd309d17c0c03a64","abstract_canon_sha256":"72b516cdd84b24aa9b1496961553151a9e9c5d74c02e3380b10985630c6d332d"},"schema_version":"1.0"},"canonical_sha256":"86249225f0f4bf277a230236688b2b56df591a3f40262a6e9d1ddca7b1602d52","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:02:54.026660Z","signature_b64":"281smhDXD1bE4G3SP05Ek3OffOezpkfbcWOwInQAWh15v0pDi1UaydcYccMxUyJOciY/XoTyR6Lp3jzjAB8cCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"86249225f0f4bf277a230236688b2b56df591a3f40262a6e9d1ddca7b1602d52","last_reissued_at":"2026-05-18T02:02:54.025899Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:02:54.025899Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1103.2570","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:02:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"41EhquRSHVrKzH4BQC8i5I4Ub5mIcrw864yb/rkzhg4ujdO80AN+lSBk6wx5Nmq0Ylj7JXqKob70+FC8dFV9Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T12:02:49.280706Z"},"content_sha256":"ec1f3218a75a294623937cf28c21faf7f8a09097100e8b346d5f4c3ce721dd74","schema_version":"1.0","event_id":"sha256:ec1f3218a75a294623937cf28c21faf7f8a09097100e8b346d5f4c3ce721dd74"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:QYSJEJPQ6S7SO6RDAI3GRCZLK3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Population of High Redshift AGNs in the Chandra COSMOS survey","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.CO","authors_text":"(10) Universidad Nacional Autonoma de Mexico-Ensenada, (11) ASI Science Data Center, (12) Max-Planck-Institut fur Astrophysik, (13) Institute for the Physics, (14) Dipartimento di Astronomia, 15), (15) Physics Department, (16) Space Telescope Science Institute, (2) Max Planck Institut fur extraterrestrische Physik, (3) INAF-Osservatorio Astronomico di Bologna, (4) Max-Planck-Institute for Plasma Physics, (5) California Institute of Technology, (6) INAF-Osservatorio Astronomico di Roma, (7) Ehime University, (8) Institute for Astronomy, 9), (9) Department of Physics, A. Comastri (3), A. M. Koekemoer (16) ((1) Harvard Smithsonian Center for astrophysics, Astronomy, A. Zezas (1, Baltimore, C. Vignali (14), D. Masters (5, F. Civano (1), F. Fiore (6), F. Shankar (12), Garching, G. Zamorani (3), H. Hao (1), H. Ikeda (7), Japan, J. Silverman (13), J. S. Kartaltepe (8), Mathematics of the Universe (IPMU), M. Brusa (2), MD), M. Elvis (1), M. Mignoli (3), M. Salvato (4), P. Capak (5), R. Gilli (3), S. Puccetti (11), T. Miyaji (10), Universita' di Bologna, University of California Riverside, University of Crete, University of Hawaii, Y. Kakazu (5)","submitted_at":"2011-03-14T01:12:28Z","abstract_excerpt":"We present the high redshift (3<z<5.3) 0.5-2 keV number counts and the 2-10 keV (rest frame) space density of X-ray selected AGNs detected in the Chandra COSMOS survey. The sample comprises 81 X-ray detected sources with available spectroscopic (31) and photometric (50) redshifts plus 20 sources with a formal z_phot<3 but with a broad photometric redshift probability distribution, such that z_phot+1sigma>3. 81 sources are selected in the 0.5-2 keV band, 14 are selected in the 2-10 keV and 6 in the 0.5-10 keV bands. We sample the high luminosity (log L_(2-10 keV)>44.15 erg/s) space density up t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1103.2570","kind":"arxiv","version":2},"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":"2026-05-18T02:02:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4x1kefae9mYuJtylmQZrIDzR+FxPYy4WxYB7VVZpvrrPWZjtfb3W5Ifd5HsilIigXajOYAtXjX0BR1TZI5jwAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T12:02:49.281458Z"},"content_sha256":"bbb838de54715d7721555391b2d8cd409373bbe97f66f4f066a0d324554e7aee","schema_version":"1.0","event_id":"sha256:bbb838de54715d7721555391b2d8cd409373bbe97f66f4f066a0d324554e7aee"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QYSJEJPQ6S7SO6RDAI3GRCZLK3/bundle.json","state_url":"https://pith.science/pith/QYSJEJPQ6S7SO6RDAI3GRCZLK3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QYSJEJPQ6S7SO6RDAI3GRCZLK3/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":"2026-05-27T12:02:49Z","links":{"resolver":"https://pith.science/pith/QYSJEJPQ6S7SO6RDAI3GRCZLK3","bundle":"https://pith.science/pith/QYSJEJPQ6S7SO6RDAI3GRCZLK3/bundle.json","state":"https://pith.science/pith/QYSJEJPQ6S7SO6RDAI3GRCZLK3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QYSJEJPQ6S7SO6RDAI3GRCZLK3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:QYSJEJPQ6S7SO6RDAI3GRCZLK3","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":"72b516cdd84b24aa9b1496961553151a9e9c5d74c02e3380b10985630c6d332d","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-03-14T01:12:28Z","title_canon_sha256":"82f2b0444ee6fd9639871eb7063126d5d20ee2d0e03cea35fd309d17c0c03a64"},"schema_version":"1.0","source":{"id":"1103.2570","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1103.2570","created_at":"2026-05-18T02:02:54Z"},{"alias_kind":"arxiv_version","alias_value":"1103.2570v2","created_at":"2026-05-18T02:02:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1103.2570","created_at":"2026-05-18T02:02:54Z"},{"alias_kind":"pith_short_12","alias_value":"QYSJEJPQ6S7S","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_16","alias_value":"QYSJEJPQ6S7SO6RD","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_8","alias_value":"QYSJEJPQ","created_at":"2026-05-18T12:26:39Z"}],"graph_snapshots":[{"event_id":"sha256:bbb838de54715d7721555391b2d8cd409373bbe97f66f4f066a0d324554e7aee","target":"graph","created_at":"2026-05-18T02:02:54Z","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 the high redshift (3<z<5.3) 0.5-2 keV number counts and the 2-10 keV (rest frame) space density of X-ray selected AGNs detected in the Chandra COSMOS survey. The sample comprises 81 X-ray detected sources with available spectroscopic (31) and photometric (50) redshifts plus 20 sources with a formal z_phot<3 but with a broad photometric redshift probability distribution, such that z_phot+1sigma>3. 81 sources are selected in the 0.5-2 keV band, 14 are selected in the 2-10 keV and 6 in the 0.5-10 keV bands. We sample the high luminosity (log L_(2-10 keV)>44.15 erg/s) space density up t","authors_text":"(10) Universidad Nacional Autonoma de Mexico-Ensenada, (11) ASI Science Data Center, (12) Max-Planck-Institut fur Astrophysik, (13) Institute for the Physics, (14) Dipartimento di Astronomia, 15), (15) Physics Department, (16) Space Telescope Science Institute, (2) Max Planck Institut fur extraterrestrische Physik, (3) INAF-Osservatorio Astronomico di Bologna, (4) Max-Planck-Institute for Plasma Physics, (5) California Institute of Technology, (6) INAF-Osservatorio Astronomico di Roma, (7) Ehime University, (8) Institute for Astronomy, 9), (9) Department of Physics, A. Comastri (3), A. M. Koekemoer (16) ((1) Harvard Smithsonian Center for astrophysics, Astronomy, A. Zezas (1, Baltimore, C. Vignali (14), D. Masters (5, F. Civano (1), F. Fiore (6), F. Shankar (12), Garching, G. Zamorani (3), H. Hao (1), H. Ikeda (7), Japan, J. Silverman (13), J. S. Kartaltepe (8), Mathematics of the Universe (IPMU), M. Brusa (2), MD), M. Elvis (1), M. Mignoli (3), M. Salvato (4), P. Capak (5), R. Gilli (3), S. Puccetti (11), T. Miyaji (10), Universita' di Bologna, University of California Riverside, University of Crete, University of Hawaii, Y. Kakazu (5)","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-03-14T01:12:28Z","title":"The Population of High Redshift AGNs in the Chandra COSMOS survey"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1103.2570","kind":"arxiv","version":2},"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:ec1f3218a75a294623937cf28c21faf7f8a09097100e8b346d5f4c3ce721dd74","target":"record","created_at":"2026-05-18T02:02:54Z","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":"72b516cdd84b24aa9b1496961553151a9e9c5d74c02e3380b10985630c6d332d","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-03-14T01:12:28Z","title_canon_sha256":"82f2b0444ee6fd9639871eb7063126d5d20ee2d0e03cea35fd309d17c0c03a64"},"schema_version":"1.0","source":{"id":"1103.2570","kind":"arxiv","version":2}},"canonical_sha256":"86249225f0f4bf277a230236688b2b56df591a3f40262a6e9d1ddca7b1602d52","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"86249225f0f4bf277a230236688b2b56df591a3f40262a6e9d1ddca7b1602d52","first_computed_at":"2026-05-18T02:02:54.025899Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:02:54.025899Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"281smhDXD1bE4G3SP05Ek3OffOezpkfbcWOwInQAWh15v0pDi1UaydcYccMxUyJOciY/XoTyR6Lp3jzjAB8cCg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:02:54.026660Z","signed_message":"canonical_sha256_bytes"},"source_id":"1103.2570","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ec1f3218a75a294623937cf28c21faf7f8a09097100e8b346d5f4c3ce721dd74","sha256:bbb838de54715d7721555391b2d8cd409373bbe97f66f4f066a0d324554e7aee"],"state_sha256":"16c03d7164b663b4e41ddbd1dcfeb01b0a25a9212d82b3359a6e1bc47299efcf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"z9BjV6xmzsmiD+7mMfh3o+WH9f79vKe2wGUk2OVJ9dLWdErg2QtYtsxPnGCdHnXhXDEsVmYaIBopepNz1fGjDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T12:02:49.285771Z","bundle_sha256":"56c2ba5e1b56563212c13a1698194b4e758fbdc832bf75c8f848bb6f00efe216"}}