{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:7YUII43HMXE3SQPUXI4UHDCFLR","short_pith_number":"pith:7YUII43H","canonical_record":{"source":{"id":"2504.18740","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-04-25T23:30:08Z","cross_cats_sorted":[],"title_canon_sha256":"0eb5dc1eb75ddd06b2e9934bcbe4d23c7caeae245984079b96e79a4412e024c2","abstract_canon_sha256":"e7e2004dd663d77ed10c0225f84918f3eb47f0cfc405bc0c4ddd9307e704707c"},"schema_version":"1.0"},"canonical_sha256":"fe2884736765c9b941f4ba39438c455c6252f2a7580ca58a433891a7229d882a","source":{"kind":"arxiv","id":"2504.18740","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2504.18740","created_at":"2026-07-05T10:54:20Z"},{"alias_kind":"arxiv_version","alias_value":"2504.18740v1","created_at":"2026-07-05T10:54:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2504.18740","created_at":"2026-07-05T10:54:20Z"},{"alias_kind":"pith_short_12","alias_value":"7YUII43HMXE3","created_at":"2026-07-05T10:54:20Z"},{"alias_kind":"pith_short_16","alias_value":"7YUII43HMXE3SQPU","created_at":"2026-07-05T10:54:20Z"},{"alias_kind":"pith_short_8","alias_value":"7YUII43H","created_at":"2026-07-05T10:54:20Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:7YUII43HMXE3SQPUXI4UHDCFLR","target":"record","payload":{"canonical_record":{"source":{"id":"2504.18740","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-04-25T23:30:08Z","cross_cats_sorted":[],"title_canon_sha256":"0eb5dc1eb75ddd06b2e9934bcbe4d23c7caeae245984079b96e79a4412e024c2","abstract_canon_sha256":"e7e2004dd663d77ed10c0225f84918f3eb47f0cfc405bc0c4ddd9307e704707c"},"schema_version":"1.0"},"canonical_sha256":"fe2884736765c9b941f4ba39438c455c6252f2a7580ca58a433891a7229d882a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:54:20.614040Z","signature_b64":"s4wW65QKq20PICLCsdYKSTx1N3o+GFArGMgdRjLaurSJ4vITF1eRkGb3tmmRaOoCCSXxIpNpeG0w17OANVZxCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fe2884736765c9b941f4ba39438c455c6252f2a7580ca58a433891a7229d882a","last_reissued_at":"2026-07-05T10:54:20.613567Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:54:20.613567Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2504.18740","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":"2026-07-05T10:54:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YM02ORwQZmZrxPBy0h61SSuJJUelqwpG75hk4tnKoljoIKx2/0qJnr2rA/8Wk2ij2cGTArYtEkCQRf+Q8I36BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T06:57:02.876470Z"},"content_sha256":"2cc3d068db8fdc491133481efd3bf5c361fa5d295e72349797dd9bd45a534a83","schema_version":"1.0","event_id":"sha256:2cc3d068db8fdc491133481efd3bf5c361fa5d295e72349797dd9bd45a534a83"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:7YUII43HMXE3SQPUXI4UHDCFLR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"LBT IR observations of candidate super-Eddington quasars","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"C. A. Negrete, D. Dultzin, P. Marziani, T. M. Buendia-Rios","submitted_at":"2025-04-25T23:30:08Z","abstract_excerpt":"Quasars accreting at very high rates are believed to be prime movers of galactic evolution because of their high radiative and mechanical output. The study presented in this paper investigates a sample of six highly accreting quasars at redshifts \\( z = 2-3 \\) using near-infrared observations from the LUCI spectrograph at the Large Binocular Telescope (LBT). The aim is obtain a precise measure of the quasar systemic redshift and accretion parameters (black hole mass and Eddington ratio) primarily from the \\hb\\ line, \\ and on second stance from other intermediate and low ionization lines. Outfl"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2504.18740","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2504.18740/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T10:54:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4MX+DkjdxBrVyE2WufbOEVLsNxFmgHQTQjXY6BCYleo9CReK7zramBVJOsFb/SOj3rfSQ8neIH4Z8AYFrkyMDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T06:57:02.876852Z"},"content_sha256":"7b6632f7eea62b7a575d1abd8077d25dca1bdcd7345110a13b2a6eb3081ea9cd","schema_version":"1.0","event_id":"sha256:7b6632f7eea62b7a575d1abd8077d25dca1bdcd7345110a13b2a6eb3081ea9cd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7YUII43HMXE3SQPUXI4UHDCFLR/bundle.json","state_url":"https://pith.science/pith/7YUII43HMXE3SQPUXI4UHDCFLR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7YUII43HMXE3SQPUXI4UHDCFLR/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":"2026-07-06T06:57:02Z","links":{"resolver":"https://pith.science/pith/7YUII43HMXE3SQPUXI4UHDCFLR","bundle":"https://pith.science/pith/7YUII43HMXE3SQPUXI4UHDCFLR/bundle.json","state":"https://pith.science/pith/7YUII43HMXE3SQPUXI4UHDCFLR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7YUII43HMXE3SQPUXI4UHDCFLR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:7YUII43HMXE3SQPUXI4UHDCFLR","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":"e7e2004dd663d77ed10c0225f84918f3eb47f0cfc405bc0c4ddd9307e704707c","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-04-25T23:30:08Z","title_canon_sha256":"0eb5dc1eb75ddd06b2e9934bcbe4d23c7caeae245984079b96e79a4412e024c2"},"schema_version":"1.0","source":{"id":"2504.18740","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2504.18740","created_at":"2026-07-05T10:54:20Z"},{"alias_kind":"arxiv_version","alias_value":"2504.18740v1","created_at":"2026-07-05T10:54:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2504.18740","created_at":"2026-07-05T10:54:20Z"},{"alias_kind":"pith_short_12","alias_value":"7YUII43HMXE3","created_at":"2026-07-05T10:54:20Z"},{"alias_kind":"pith_short_16","alias_value":"7YUII43HMXE3SQPU","created_at":"2026-07-05T10:54:20Z"},{"alias_kind":"pith_short_8","alias_value":"7YUII43H","created_at":"2026-07-05T10:54:20Z"}],"graph_snapshots":[{"event_id":"sha256:7b6632f7eea62b7a575d1abd8077d25dca1bdcd7345110a13b2a6eb3081ea9cd","target":"graph","created_at":"2026-07-05T10:54:20Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2504.18740/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Quasars accreting at very high rates are believed to be prime movers of galactic evolution because of their high radiative and mechanical output. The study presented in this paper investigates a sample of six highly accreting quasars at redshifts \\( z = 2-3 \\) using near-infrared observations from the LUCI spectrograph at the Large Binocular Telescope (LBT). The aim is obtain a precise measure of the quasar systemic redshift and accretion parameters (black hole mass and Eddington ratio) primarily from the \\hb\\ line, \\ and on second stance from other intermediate and low ionization lines. Outfl","authors_text":"C. A. Negrete, D. Dultzin, P. Marziani, T. M. Buendia-Rios","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-04-25T23:30:08Z","title":"LBT IR observations of candidate super-Eddington quasars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2504.18740","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":"sha256:2cc3d068db8fdc491133481efd3bf5c361fa5d295e72349797dd9bd45a534a83","target":"record","created_at":"2026-07-05T10:54:20Z","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":"e7e2004dd663d77ed10c0225f84918f3eb47f0cfc405bc0c4ddd9307e704707c","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-04-25T23:30:08Z","title_canon_sha256":"0eb5dc1eb75ddd06b2e9934bcbe4d23c7caeae245984079b96e79a4412e024c2"},"schema_version":"1.0","source":{"id":"2504.18740","kind":"arxiv","version":1}},"canonical_sha256":"fe2884736765c9b941f4ba39438c455c6252f2a7580ca58a433891a7229d882a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fe2884736765c9b941f4ba39438c455c6252f2a7580ca58a433891a7229d882a","first_computed_at":"2026-07-05T10:54:20.613567Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:54:20.613567Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"s4wW65QKq20PICLCsdYKSTx1N3o+GFArGMgdRjLaurSJ4vITF1eRkGb3tmmRaOoCCSXxIpNpeG0w17OANVZxCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T10:54:20.614040Z","signed_message":"canonical_sha256_bytes"},"source_id":"2504.18740","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2cc3d068db8fdc491133481efd3bf5c361fa5d295e72349797dd9bd45a534a83","sha256:7b6632f7eea62b7a575d1abd8077d25dca1bdcd7345110a13b2a6eb3081ea9cd"],"state_sha256":"fbfdcbea59fb35ab007a1210f5ddc2020bd6dafb42d5ec4f6cb48a97e229f290"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cL64LEevSUy2ZIl+EDdT2rObBUaku1Z2hKht+1QF2aSs9ge4RtKa2moTHJLZX2/ZY3G1RxCJM+Eb7zfzMQEgDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-06T06:57:02.879074Z","bundle_sha256":"efc02ff011f2854f1656443e7cbaa7740557607fcacd42a18a814931db8fc837"}}