{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2006:ECOPHFSCHDAVXUUAO26DTQVPIK","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":"c052724068c529869203840cfd9d62bad189b4dc05138973904eb9ffb93cf926","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2006-06-30T07:41:10Z","title_canon_sha256":"990d11b600c44f405917a2c758e8f9cf31eece015fca472b49502301e466801e"},"schema_version":"1.0","source":{"id":"astro-ph/0606747","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0606747","created_at":"2026-05-18T01:07:25Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0606747v1","created_at":"2026-05-18T01:07:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0606747","created_at":"2026-05-18T01:07:25Z"},{"alias_kind":"pith_short_12","alias_value":"ECOPHFSCHDAV","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"ECOPHFSCHDAVXUUA","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"ECOPHFSC","created_at":"2026-05-18T12:25:53Z"}],"graph_snapshots":[{"event_id":"sha256:f9b3764039e8b9a5af4e0f8a398d0d14ba33bd30a8ff9d3fb962143e5ba14302","target":"graph","created_at":"2026-05-18T01:07:25Z","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":"High redshift QSOs (redshift$>$5.7) are highly important objects. If such QSOs may be found, their spectra will reveal the onset of reionization of the intergalactic medium (Gunn-Peterson trough), and provide precious insights into the re-ionization epoch in the very early universe.\n Here we report our pilot attempt to follow-up high redshift QSOs with the Himalayan Chandra Telescope.\n Deep $J$-band imaging was performed on three high redshift QSO candidates color-selected from the SDSS, using the near-infrared imager. Although none of the targets turned out to be likely high redshift QSOs, ca","authors_text":"Tomotsugu Goto (ISAS/Jaxa)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2006-06-30T07:41:10Z","title":"Deep J-band imaging of high redshift QSO candidates with the Himalayan Chandra Telescope"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0606747","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":"sha256:2aecbf850f590f30a80157c53244d87669e879ae37b1f47ffc8e3bf05b90ee7f","target":"record","created_at":"2026-05-18T01:07:25Z","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":"c052724068c529869203840cfd9d62bad189b4dc05138973904eb9ffb93cf926","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2006-06-30T07:41:10Z","title_canon_sha256":"990d11b600c44f405917a2c758e8f9cf31eece015fca472b49502301e466801e"},"schema_version":"1.0","source":{"id":"astro-ph/0606747","kind":"arxiv","version":1}},"canonical_sha256":"209cf3964238c15bd28076bc39c2af428fff55efe6bf32aa9bb581a4399a9c24","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"209cf3964238c15bd28076bc39c2af428fff55efe6bf32aa9bb581a4399a9c24","first_computed_at":"2026-05-18T01:07:25.336071Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:07:25.336071Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PGMwaobP4GQny+YjygK73ek131ivX/pFbANhn9sFuDiFMBWroeLpphrGu1tRn69/Qk03Nu+r3GbFYx1G4wc6Bw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:07:25.336723Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0606747","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2aecbf850f590f30a80157c53244d87669e879ae37b1f47ffc8e3bf05b90ee7f","sha256:f9b3764039e8b9a5af4e0f8a398d0d14ba33bd30a8ff9d3fb962143e5ba14302"],"state_sha256":"2e2b21c1747e223a2b8cad2efa95e929856d57eb504eb81ea98e7d8ee7a24ea9"}