{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:6D4IHULPYQQWWLENBONSNXFHAD","short_pith_number":"pith:6D4IHULP","canonical_record":{"source":{"id":"1105.5842","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2011-05-30T00:33:20Z","cross_cats_sorted":["astro-ph.HE","astro-ph.IM"],"title_canon_sha256":"5b74e30ad53489a6473bbf8e2e20b389ef2aec21842fcda7b3adf916a149f66a","abstract_canon_sha256":"e8be5114c1da49482feb6d9845c88fea489aa61fb77b6d103b4431c0497ad839"},"schema_version":"1.0"},"canonical_sha256":"f0f883d16fc4216b2c8d0b9b26dca700ff7c390bf4504da480d94a96bf578261","source":{"kind":"arxiv","id":"1105.5842","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1105.5842","created_at":"2026-05-18T03:23:24Z"},{"alias_kind":"arxiv_version","alias_value":"1105.5842v1","created_at":"2026-05-18T03:23:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1105.5842","created_at":"2026-05-18T03:23:24Z"},{"alias_kind":"pith_short_12","alias_value":"6D4IHULPYQQW","created_at":"2026-05-18T12:26:22Z"},{"alias_kind":"pith_short_16","alias_value":"6D4IHULPYQQWWLEN","created_at":"2026-05-18T12:26:22Z"},{"alias_kind":"pith_short_8","alias_value":"6D4IHULP","created_at":"2026-05-18T12:26:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:6D4IHULPYQQWWLENBONSNXFHAD","target":"record","payload":{"canonical_record":{"source":{"id":"1105.5842","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2011-05-30T00:33:20Z","cross_cats_sorted":["astro-ph.HE","astro-ph.IM"],"title_canon_sha256":"5b74e30ad53489a6473bbf8e2e20b389ef2aec21842fcda7b3adf916a149f66a","abstract_canon_sha256":"e8be5114c1da49482feb6d9845c88fea489aa61fb77b6d103b4431c0497ad839"},"schema_version":"1.0"},"canonical_sha256":"f0f883d16fc4216b2c8d0b9b26dca700ff7c390bf4504da480d94a96bf578261","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:23:24.804826Z","signature_b64":"0uNV9BhfJFkq5OuCCzUTkHmr7RnbVXPYp8IQbewkNtP+InlxXnS6upYvLwzTO45KbZyClqQA0nL3deNQ7FZcAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f0f883d16fc4216b2c8d0b9b26dca700ff7c390bf4504da480d94a96bf578261","last_reissued_at":"2026-05-18T03:23:24.804046Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:23:24.804046Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1105.5842","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":"2026-05-18T03:23:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"znemOrXZBYD9PsfRVdPXUHhXPwYDCLpp0sH1zsmIsvCKm4VxpML6cUupmYmEQppYjOQgXuYE0ILB646gMkbJDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T18:00:13.091125Z"},"content_sha256":"491cc77bf710ca834d9e56cc4560a5d5712148b5645ac6f406bf9ad35fb710ca","schema_version":"1.0","event_id":"sha256:491cc77bf710ca834d9e56cc4560a5d5712148b5645ac6f406bf9ad35fb710ca"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:6D4IHULPYQQWWLENBONSNXFHAD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The cross-correlation search for a hot spot of gravitational waves","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE","astro-ph.IM"],"primary_cat":"gr-qc","authors_text":"Hideyuki Tagoshi, Hirotaka Takahashi, Nobuyuki Kanda, Sanjeev Dhurandhar, Yuta Okada","submitted_at":"2011-05-30T00:33:20Z","abstract_excerpt":"The cross-correlation search has been previously applied to map the gravitational wave (GW) stochastic background in the sky and also to target GW from rotating neutron stars/pulsars. Here we investigate how the cross-correlation method can be used to target a small region in the sky spanning at most a few pixels, where a pixel in the sky is determined by the diffraction limit which depends on the (i) baseline joining a pair of detectors and (ii) detector bandwidth. Here as one of the promising targets, we consider the Virgo cluster - a \"hot spot\" spanning few pixels - which could contain, as "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1105.5842","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":"2026-05-18T03:23:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tsXYqDnG9l+1NIRiX6nEXbywafDgWnqHY0LYTVGuMO0m1Mp57OwZh3R9bUGH5nNLHJ6Y4RqXn1uLbB8tQasUDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T18:00:13.091735Z"},"content_sha256":"dc3f88c5dd33c4239c18e572289e9e967aabaecb041a880e334e44f7089bbc84","schema_version":"1.0","event_id":"sha256:dc3f88c5dd33c4239c18e572289e9e967aabaecb041a880e334e44f7089bbc84"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6D4IHULPYQQWWLENBONSNXFHAD/bundle.json","state_url":"https://pith.science/pith/6D4IHULPYQQWWLENBONSNXFHAD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6D4IHULPYQQWWLENBONSNXFHAD/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":"2026-05-27T18:00:13Z","links":{"resolver":"https://pith.science/pith/6D4IHULPYQQWWLENBONSNXFHAD","bundle":"https://pith.science/pith/6D4IHULPYQQWWLENBONSNXFHAD/bundle.json","state":"https://pith.science/pith/6D4IHULPYQQWWLENBONSNXFHAD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6D4IHULPYQQWWLENBONSNXFHAD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:6D4IHULPYQQWWLENBONSNXFHAD","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":"e8be5114c1da49482feb6d9845c88fea489aa61fb77b6d103b4431c0497ad839","cross_cats_sorted":["astro-ph.HE","astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2011-05-30T00:33:20Z","title_canon_sha256":"5b74e30ad53489a6473bbf8e2e20b389ef2aec21842fcda7b3adf916a149f66a"},"schema_version":"1.0","source":{"id":"1105.5842","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1105.5842","created_at":"2026-05-18T03:23:24Z"},{"alias_kind":"arxiv_version","alias_value":"1105.5842v1","created_at":"2026-05-18T03:23:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1105.5842","created_at":"2026-05-18T03:23:24Z"},{"alias_kind":"pith_short_12","alias_value":"6D4IHULPYQQW","created_at":"2026-05-18T12:26:22Z"},{"alias_kind":"pith_short_16","alias_value":"6D4IHULPYQQWWLEN","created_at":"2026-05-18T12:26:22Z"},{"alias_kind":"pith_short_8","alias_value":"6D4IHULP","created_at":"2026-05-18T12:26:22Z"}],"graph_snapshots":[{"event_id":"sha256:dc3f88c5dd33c4239c18e572289e9e967aabaecb041a880e334e44f7089bbc84","target":"graph","created_at":"2026-05-18T03:23:24Z","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 cross-correlation search has been previously applied to map the gravitational wave (GW) stochastic background in the sky and also to target GW from rotating neutron stars/pulsars. Here we investigate how the cross-correlation method can be used to target a small region in the sky spanning at most a few pixels, where a pixel in the sky is determined by the diffraction limit which depends on the (i) baseline joining a pair of detectors and (ii) detector bandwidth. Here as one of the promising targets, we consider the Virgo cluster - a \"hot spot\" spanning few pixels - which could contain, as ","authors_text":"Hideyuki Tagoshi, Hirotaka Takahashi, Nobuyuki Kanda, Sanjeev Dhurandhar, Yuta Okada","cross_cats":["astro-ph.HE","astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2011-05-30T00:33:20Z","title":"The cross-correlation search for a hot spot of gravitational waves"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1105.5842","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":"sha256:491cc77bf710ca834d9e56cc4560a5d5712148b5645ac6f406bf9ad35fb710ca","target":"record","created_at":"2026-05-18T03:23:24Z","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":"e8be5114c1da49482feb6d9845c88fea489aa61fb77b6d103b4431c0497ad839","cross_cats_sorted":["astro-ph.HE","astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2011-05-30T00:33:20Z","title_canon_sha256":"5b74e30ad53489a6473bbf8e2e20b389ef2aec21842fcda7b3adf916a149f66a"},"schema_version":"1.0","source":{"id":"1105.5842","kind":"arxiv","version":1}},"canonical_sha256":"f0f883d16fc4216b2c8d0b9b26dca700ff7c390bf4504da480d94a96bf578261","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f0f883d16fc4216b2c8d0b9b26dca700ff7c390bf4504da480d94a96bf578261","first_computed_at":"2026-05-18T03:23:24.804046Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:23:24.804046Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0uNV9BhfJFkq5OuCCzUTkHmr7RnbVXPYp8IQbewkNtP+InlxXnS6upYvLwzTO45KbZyClqQA0nL3deNQ7FZcAg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:23:24.804826Z","signed_message":"canonical_sha256_bytes"},"source_id":"1105.5842","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:491cc77bf710ca834d9e56cc4560a5d5712148b5645ac6f406bf9ad35fb710ca","sha256:dc3f88c5dd33c4239c18e572289e9e967aabaecb041a880e334e44f7089bbc84"],"state_sha256":"9607156a703adcd42e9471b368453ab645bdbbd15c1663b6f9d0692f2cbe2b13"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+6Eg8eJczOEu1NDc1yuA1J3UJe02aTFFc8lvljyGNjv3Yz+vA7R0RFoXmEHSyBN+a65o/bfv5xok41426+0fCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T18:00:13.094944Z","bundle_sha256":"3a7907b8b7373c47735359765a14f1f873fd6b6c4f0a398c37070f49cc205e3b"}}