{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:3D522KT2FB2EQEWTW2Y46CB3DK","short_pith_number":"pith:3D522KT2","canonical_record":{"source":{"id":"1109.1839","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-09-08T20:19:23Z","cross_cats_sorted":[],"title_canon_sha256":"62a5949b0f2d65aad8af8e8528fad63cb31eca3caf79a5ff17bb6aa58d9a74a9","abstract_canon_sha256":"1c3edd004d10a6b231f54f0580d394e5e037f7176fecd2e27e0aa3d0924f2301"},"schema_version":"1.0"},"canonical_sha256":"d8fbad2a7a28744812d3b6b1cf083b1a876e65e47ae2775844076acead5fefa0","source":{"kind":"arxiv","id":"1109.1839","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1109.1839","created_at":"2026-05-18T02:00:37Z"},{"alias_kind":"arxiv_version","alias_value":"1109.1839v2","created_at":"2026-05-18T02:00:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1109.1839","created_at":"2026-05-18T02:00:37Z"},{"alias_kind":"pith_short_12","alias_value":"3D522KT2FB2E","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_16","alias_value":"3D522KT2FB2EQEWT","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_8","alias_value":"3D522KT2","created_at":"2026-05-18T12:26:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:3D522KT2FB2EQEWTW2Y46CB3DK","target":"record","payload":{"canonical_record":{"source":{"id":"1109.1839","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-09-08T20:19:23Z","cross_cats_sorted":[],"title_canon_sha256":"62a5949b0f2d65aad8af8e8528fad63cb31eca3caf79a5ff17bb6aa58d9a74a9","abstract_canon_sha256":"1c3edd004d10a6b231f54f0580d394e5e037f7176fecd2e27e0aa3d0924f2301"},"schema_version":"1.0"},"canonical_sha256":"d8fbad2a7a28744812d3b6b1cf083b1a876e65e47ae2775844076acead5fefa0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:00:37.605987Z","signature_b64":"50Aq8lDE89DoLplApoxIYMSmDjIdMsClkbWDxKt2fHvPA45yi4XnivFd7PaJYwXblulbjxOSpcOnlqjIIUwBBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d8fbad2a7a28744812d3b6b1cf083b1a876e65e47ae2775844076acead5fefa0","last_reissued_at":"2026-05-18T02:00:37.605383Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:00:37.605383Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1109.1839","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":"2026-05-18T02:00:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"L8whRdo3teOlAdLKqWO+VzXDNcfsW5bHRCBJ0PIxV2mya5F2Tmzq0f0XrhIAaKBIWvLmM/xL3ro7rnEGmhxyCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T20:51:47.714439Z"},"content_sha256":"68e72f42f884dbd8f871fd95b74135bb9f5256ce98adde9b6e53e72321fdc95e","schema_version":"1.0","event_id":"sha256:68e72f42f884dbd8f871fd95b74135bb9f5256ce98adde9b6e53e72321fdc95e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:3D522KT2FB2EQEWTW2Y46CB3DK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The near-infrared counterpart of 4U 1636-53","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"D. M. Russell (Amsterdam, IAC Tenerife), K. O'Brien, M. G. Revnivtsev, P. Casella, P. Gandhi, T. Mu\\~noz-Darias","submitted_at":"2011-09-08T20:19:23Z","abstract_excerpt":"The optical counterpart of the neutron star X-ray binary and well known X-ray burster, 4U 1636-53 (= 4U 1636-536 = V801 Ara) has been well studied for three decades. However to date, no infrared studies have been reported. Our aims are to identify and investigate the near-infrared (NIR) counterpart of 4U 1636-53. We present deep, K_s-band (2.2 micron) imaging of the region of 4U 1636-53 taken with the Infrared Spectrometer And Array Camera (ISAAC) on the Very Large Telescope. Archival optical and UV data are used to infer the 0.2-2.2 micron spectral energy distribution (SED). One star is locat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1109.1839","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":"2026-05-18T02:00:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7HNDkSqj4NcznNx7rZgbm17Ju09BbmwXbaXVqidTJAyH774+PvRp0f1p4MslpxYUdkgBxJuVO1mfWM9uHZiuDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T20:51:47.715101Z"},"content_sha256":"08d6707893185b06e3ee39909135469003cc4c82909deecfcc0621c80a05bacd","schema_version":"1.0","event_id":"sha256:08d6707893185b06e3ee39909135469003cc4c82909deecfcc0621c80a05bacd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3D522KT2FB2EQEWTW2Y46CB3DK/bundle.json","state_url":"https://pith.science/pith/3D522KT2FB2EQEWTW2Y46CB3DK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3D522KT2FB2EQEWTW2Y46CB3DK/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":"2026-05-27T20:51:47Z","links":{"resolver":"https://pith.science/pith/3D522KT2FB2EQEWTW2Y46CB3DK","bundle":"https://pith.science/pith/3D522KT2FB2EQEWTW2Y46CB3DK/bundle.json","state":"https://pith.science/pith/3D522KT2FB2EQEWTW2Y46CB3DK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3D522KT2FB2EQEWTW2Y46CB3DK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:3D522KT2FB2EQEWTW2Y46CB3DK","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":"1c3edd004d10a6b231f54f0580d394e5e037f7176fecd2e27e0aa3d0924f2301","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-09-08T20:19:23Z","title_canon_sha256":"62a5949b0f2d65aad8af8e8528fad63cb31eca3caf79a5ff17bb6aa58d9a74a9"},"schema_version":"1.0","source":{"id":"1109.1839","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1109.1839","created_at":"2026-05-18T02:00:37Z"},{"alias_kind":"arxiv_version","alias_value":"1109.1839v2","created_at":"2026-05-18T02:00:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1109.1839","created_at":"2026-05-18T02:00:37Z"},{"alias_kind":"pith_short_12","alias_value":"3D522KT2FB2E","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_16","alias_value":"3D522KT2FB2EQEWT","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_8","alias_value":"3D522KT2","created_at":"2026-05-18T12:26:18Z"}],"graph_snapshots":[{"event_id":"sha256:08d6707893185b06e3ee39909135469003cc4c82909deecfcc0621c80a05bacd","target":"graph","created_at":"2026-05-18T02:00:37Z","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":"The optical counterpart of the neutron star X-ray binary and well known X-ray burster, 4U 1636-53 (= 4U 1636-536 = V801 Ara) has been well studied for three decades. However to date, no infrared studies have been reported. Our aims are to identify and investigate the near-infrared (NIR) counterpart of 4U 1636-53. We present deep, K_s-band (2.2 micron) imaging of the region of 4U 1636-53 taken with the Infrared Spectrometer And Array Camera (ISAAC) on the Very Large Telescope. Archival optical and UV data are used to infer the 0.2-2.2 micron spectral energy distribution (SED). One star is locat","authors_text":"D. M. Russell (Amsterdam, IAC Tenerife), K. O'Brien, M. G. Revnivtsev, P. Casella, P. Gandhi, T. Mu\\~noz-Darias","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-09-08T20:19:23Z","title":"The near-infrared counterpart of 4U 1636-53"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1109.1839","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":"sha256:68e72f42f884dbd8f871fd95b74135bb9f5256ce98adde9b6e53e72321fdc95e","target":"record","created_at":"2026-05-18T02:00:37Z","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":"1c3edd004d10a6b231f54f0580d394e5e037f7176fecd2e27e0aa3d0924f2301","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-09-08T20:19:23Z","title_canon_sha256":"62a5949b0f2d65aad8af8e8528fad63cb31eca3caf79a5ff17bb6aa58d9a74a9"},"schema_version":"1.0","source":{"id":"1109.1839","kind":"arxiv","version":2}},"canonical_sha256":"d8fbad2a7a28744812d3b6b1cf083b1a876e65e47ae2775844076acead5fefa0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d8fbad2a7a28744812d3b6b1cf083b1a876e65e47ae2775844076acead5fefa0","first_computed_at":"2026-05-18T02:00:37.605383Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:00:37.605383Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"50Aq8lDE89DoLplApoxIYMSmDjIdMsClkbWDxKt2fHvPA45yi4XnivFd7PaJYwXblulbjxOSpcOnlqjIIUwBBw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:00:37.605987Z","signed_message":"canonical_sha256_bytes"},"source_id":"1109.1839","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:68e72f42f884dbd8f871fd95b74135bb9f5256ce98adde9b6e53e72321fdc95e","sha256:08d6707893185b06e3ee39909135469003cc4c82909deecfcc0621c80a05bacd"],"state_sha256":"526200274ed79d40b240919779aa07eb10841568aeb8ef1a01a8d4c5d312559b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"29mCa/hu83I/hVVGjC6InOX5jvIelRlBQjqHsbBQQbubM4kEI/X5ICRMpwog3+cVMbP+mwJ+b06PeahHh2UMCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T20:51:47.718699Z","bundle_sha256":"6d9e751553d118060fa5a7292b1703ffdeb99fdcce64b573fa2e68ea85399af2"}}