{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:TZLC4RZLLQN64C5JAUOUYDZIE3","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":"a18c56863eed049627ead90d39f52855cce185e2b1ee9f2d8bb99c88bf432c3f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-11-12T09:43:41Z","title_canon_sha256":"4ea6198e6fd2913961b92d6650ec700a99d4141139f92a9db06830adcd8bec5a"},"schema_version":"1.0","source":{"id":"0911.2338","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0911.2338","created_at":"2026-05-18T02:34:11Z"},{"alias_kind":"arxiv_version","alias_value":"0911.2338v2","created_at":"2026-05-18T02:34:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0911.2338","created_at":"2026-05-18T02:34:11Z"},{"alias_kind":"pith_short_12","alias_value":"TZLC4RZLLQN6","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_16","alias_value":"TZLC4RZLLQN64C5J","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_8","alias_value":"TZLC4RZL","created_at":"2026-05-18T12:26:02Z"}],"graph_snapshots":[{"event_id":"sha256:8acdd6c979adbd15f38b47760f6392d64e59606952c8194563061c7d9d455b7c","target":"graph","created_at":"2026-05-18T02:34:11Z","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":"Point source searches with the IceCube neutrino telescope have been restricted to one hemisphere, due to the exclusive selection of upward going events as a way of rejecting the atmospheric muon background. We show that the region above the horizon can be included by suppressing the background through energy-sensitive cuts. This approach improves the sensitivity above PeV energies, previously not accessible for declinations of more than a few degrees below the horizon due to the absorption of neutrinos in Earth. We present results based on data collected with 22 strings of IceCube, extending i","authors_text":"et al, The IceCube Collaboration: R. Abbasi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-11-12T09:43:41Z","title":"Extending the search for neutrino point sources with IceCube above the horizon"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0911.2338","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:f540e82944a03ba8e1bc2b06c6c32e99fda83ef16f74ef922039b10dee01636a","target":"record","created_at":"2026-05-18T02:34:11Z","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":"a18c56863eed049627ead90d39f52855cce185e2b1ee9f2d8bb99c88bf432c3f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-11-12T09:43:41Z","title_canon_sha256":"4ea6198e6fd2913961b92d6650ec700a99d4141139f92a9db06830adcd8bec5a"},"schema_version":"1.0","source":{"id":"0911.2338","kind":"arxiv","version":2}},"canonical_sha256":"9e562e472b5c1bee0ba9051d4c0f2826ef34538e02ed1d55cd6e69dbb3bde242","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9e562e472b5c1bee0ba9051d4c0f2826ef34538e02ed1d55cd6e69dbb3bde242","first_computed_at":"2026-05-18T02:34:11.112296Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:34:11.112296Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"H92/NixBAWK/DE9E58hu0IW0WpVenKCxZLo0TafBO0PdduDMct2RqGGKjmNOOfywZw9fEJ2trXmI7hWig1EHAg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:34:11.112786Z","signed_message":"canonical_sha256_bytes"},"source_id":"0911.2338","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f540e82944a03ba8e1bc2b06c6c32e99fda83ef16f74ef922039b10dee01636a","sha256:8acdd6c979adbd15f38b47760f6392d64e59606952c8194563061c7d9d455b7c"],"state_sha256":"8f47e7388a29e81f4148845bf6535035cbd69facf3693dad611b18692c539de3"}