{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:SYVB2X6WOZXMKFYF6LEOFWQF4E","short_pith_number":"pith:SYVB2X6W","canonical_record":{"source":{"id":"1105.0282","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-05-02T09:59:41Z","cross_cats_sorted":["astro-ph.CO","astro-ph.GA","astro-ph.HE"],"title_canon_sha256":"e2e9fec02c96fe401ded316a43e2704ada1e726bf38c0c97b38ef801223bf9ca","abstract_canon_sha256":"22f4c648dbb4b68ab09b2497d363b088500864eb0e8527290aee1a5cd1237f41"},"schema_version":"1.0"},"canonical_sha256":"962a1d5fd6766ec51705f2c8e2da05e10a69a2e209727a2791703c1909339b8b","source":{"kind":"arxiv","id":"1105.0282","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1105.0282","created_at":"2026-05-18T04:23:12Z"},{"alias_kind":"arxiv_version","alias_value":"1105.0282v1","created_at":"2026-05-18T04:23:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1105.0282","created_at":"2026-05-18T04:23:12Z"},{"alias_kind":"pith_short_12","alias_value":"SYVB2X6WOZXM","created_at":"2026-05-18T12:26:41Z"},{"alias_kind":"pith_short_16","alias_value":"SYVB2X6WOZXMKFYF","created_at":"2026-05-18T12:26:41Z"},{"alias_kind":"pith_short_8","alias_value":"SYVB2X6W","created_at":"2026-05-18T12:26:41Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:SYVB2X6WOZXMKFYF6LEOFWQF4E","target":"record","payload":{"canonical_record":{"source":{"id":"1105.0282","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-05-02T09:59:41Z","cross_cats_sorted":["astro-ph.CO","astro-ph.GA","astro-ph.HE"],"title_canon_sha256":"e2e9fec02c96fe401ded316a43e2704ada1e726bf38c0c97b38ef801223bf9ca","abstract_canon_sha256":"22f4c648dbb4b68ab09b2497d363b088500864eb0e8527290aee1a5cd1237f41"},"schema_version":"1.0"},"canonical_sha256":"962a1d5fd6766ec51705f2c8e2da05e10a69a2e209727a2791703c1909339b8b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:23:12.113812Z","signature_b64":"g9MOxKd3G3xqXOeUNBy6erzIJr4WFjPfiA6U51H7d1syCao420Tj1NUmsmQLG3kSXZXZ7zqAYx2vaDwRcqbhBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"962a1d5fd6766ec51705f2c8e2da05e10a69a2e209727a2791703c1909339b8b","last_reissued_at":"2026-05-18T04:23:12.113157Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:23:12.113157Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1105.0282","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":"2026-05-18T04:23:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"y0zSA6VRazZWI4kA9lXCAa9Ugo9H40m3ptz9B9r7cSQBpTGo8/qz1ZktW2/D63bPH8RYZltEqi2dWa9AYAxHCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T19:14:47.900125Z"},"content_sha256":"ddfed2c3eed0869295290cf11c0f14dd4c3e4c6b9c85692356c8a9fcb1840425","schema_version":"1.0","event_id":"sha256:ddfed2c3eed0869295290cf11c0f14dd4c3e4c6b9c85692356c8a9fcb1840425"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:SYVB2X6WOZXMKFYF6LEOFWQF4E","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Timing analysis techniques at large core distances for multi-TeV gamma ray astronomy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","astro-ph.GA","astro-ph.HE"],"primary_cat":"astro-ph.IM","authors_text":"A. G. K. Smith, B. R. Dawson, G. J. Thornton, G. P. Rowell, J. Denman, N. Wild, R. W. Clay, T. Sudholz, V. Stamatescu","submitted_at":"2011-05-02T09:59:41Z","abstract_excerpt":"We present an analysis technique that uses the timing information of Cherenkov images from extensive air showers (EAS). Our emphasis is on distant, or large core distance gamma-ray induced showers at multi-TeV energies. Specifically, combining pixel timing information with an improved direction reconstruction algorithm, leads to improvements in angular and core resolution as large as ~40% and ~30%, respectively, when compared with the same algorithm without the use of timing. Above 10 TeV, this results in an angular resolution approaching 0.05 degrees, together with a core resolution better th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1105.0282","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":""},"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":"2026-05-18T04:23:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GbPXP/KeiFD4mxorlo2kDzdQKYF/rqbXLcJW/UilYd5C567Ta2TPVA67Ka8DBVCz69yeFeBypUCPbP25KygHBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T19:14:47.900859Z"},"content_sha256":"3bb1b632597a62d578c789ba99f2f485914296577b7385860ea6e23ea99a6477","schema_version":"1.0","event_id":"sha256:3bb1b632597a62d578c789ba99f2f485914296577b7385860ea6e23ea99a6477"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SYVB2X6WOZXMKFYF6LEOFWQF4E/bundle.json","state_url":"https://pith.science/pith/SYVB2X6WOZXMKFYF6LEOFWQF4E/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SYVB2X6WOZXMKFYF6LEOFWQF4E/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":"2026-05-25T19:14:47Z","links":{"resolver":"https://pith.science/pith/SYVB2X6WOZXMKFYF6LEOFWQF4E","bundle":"https://pith.science/pith/SYVB2X6WOZXMKFYF6LEOFWQF4E/bundle.json","state":"https://pith.science/pith/SYVB2X6WOZXMKFYF6LEOFWQF4E/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SYVB2X6WOZXMKFYF6LEOFWQF4E/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:SYVB2X6WOZXMKFYF6LEOFWQF4E","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":"22f4c648dbb4b68ab09b2497d363b088500864eb0e8527290aee1a5cd1237f41","cross_cats_sorted":["astro-ph.CO","astro-ph.GA","astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-05-02T09:59:41Z","title_canon_sha256":"e2e9fec02c96fe401ded316a43e2704ada1e726bf38c0c97b38ef801223bf9ca"},"schema_version":"1.0","source":{"id":"1105.0282","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1105.0282","created_at":"2026-05-18T04:23:12Z"},{"alias_kind":"arxiv_version","alias_value":"1105.0282v1","created_at":"2026-05-18T04:23:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1105.0282","created_at":"2026-05-18T04:23:12Z"},{"alias_kind":"pith_short_12","alias_value":"SYVB2X6WOZXM","created_at":"2026-05-18T12:26:41Z"},{"alias_kind":"pith_short_16","alias_value":"SYVB2X6WOZXMKFYF","created_at":"2026-05-18T12:26:41Z"},{"alias_kind":"pith_short_8","alias_value":"SYVB2X6W","created_at":"2026-05-18T12:26:41Z"}],"graph_snapshots":[{"event_id":"sha256:3bb1b632597a62d578c789ba99f2f485914296577b7385860ea6e23ea99a6477","target":"graph","created_at":"2026-05-18T04:23:12Z","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 an analysis technique that uses the timing information of Cherenkov images from extensive air showers (EAS). Our emphasis is on distant, or large core distance gamma-ray induced showers at multi-TeV energies. Specifically, combining pixel timing information with an improved direction reconstruction algorithm, leads to improvements in angular and core resolution as large as ~40% and ~30%, respectively, when compared with the same algorithm without the use of timing. Above 10 TeV, this results in an angular resolution approaching 0.05 degrees, together with a core resolution better th","authors_text":"A. G. K. Smith, B. R. Dawson, G. J. Thornton, G. P. Rowell, J. Denman, N. Wild, R. W. Clay, T. Sudholz, V. Stamatescu","cross_cats":["astro-ph.CO","astro-ph.GA","astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-05-02T09:59:41Z","title":"Timing analysis techniques at large core distances for multi-TeV gamma ray astronomy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1105.0282","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:ddfed2c3eed0869295290cf11c0f14dd4c3e4c6b9c85692356c8a9fcb1840425","target":"record","created_at":"2026-05-18T04:23:12Z","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":"22f4c648dbb4b68ab09b2497d363b088500864eb0e8527290aee1a5cd1237f41","cross_cats_sorted":["astro-ph.CO","astro-ph.GA","astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-05-02T09:59:41Z","title_canon_sha256":"e2e9fec02c96fe401ded316a43e2704ada1e726bf38c0c97b38ef801223bf9ca"},"schema_version":"1.0","source":{"id":"1105.0282","kind":"arxiv","version":1}},"canonical_sha256":"962a1d5fd6766ec51705f2c8e2da05e10a69a2e209727a2791703c1909339b8b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"962a1d5fd6766ec51705f2c8e2da05e10a69a2e209727a2791703c1909339b8b","first_computed_at":"2026-05-18T04:23:12.113157Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:23:12.113157Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"g9MOxKd3G3xqXOeUNBy6erzIJr4WFjPfiA6U51H7d1syCao420Tj1NUmsmQLG3kSXZXZ7zqAYx2vaDwRcqbhBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:23:12.113812Z","signed_message":"canonical_sha256_bytes"},"source_id":"1105.0282","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ddfed2c3eed0869295290cf11c0f14dd4c3e4c6b9c85692356c8a9fcb1840425","sha256:3bb1b632597a62d578c789ba99f2f485914296577b7385860ea6e23ea99a6477"],"state_sha256":"a963e66251fcdfbf573b4faad27f97f4a44df544dbc6c3bdd1bc52c0bffb23c6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uXOS4osxoKuNFTRqRVuMDrMoi+EZwqvjMzNlWCW3IPESz2A1qWuOMMkwJAo8vOXl7mr6gKz8sfTl2zx8eWE/Cw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T19:14:47.904652Z","bundle_sha256":"943dfda7b8f39140d221a7a095b6319bc990c9a16d67564ff626163f10805d02"}}