{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:LKHVRJZ3HZ7VU2BNSPGTGZWHR2","short_pith_number":"pith:LKHVRJZ3","canonical_record":{"source":{"id":"1705.06665","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-05-18T15:59:30Z","cross_cats_sorted":[],"title_canon_sha256":"f5b33e3da78e4d00e8dc8fece097daad5aaee169d80bd2159ee402eceeaaa1f5","abstract_canon_sha256":"c87c533f961ba65c1d17a8d576ea12dbf7d90358a1e0578e3277f6c62dae5d55"},"schema_version":"1.0"},"canonical_sha256":"5a8f58a73b3e7f5a682d93cd3366c78e87b41b8b3476e3245de366ec71196009","source":{"kind":"arxiv","id":"1705.06665","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.06665","created_at":"2026-05-18T00:33:43Z"},{"alias_kind":"arxiv_version","alias_value":"1705.06665v2","created_at":"2026-05-18T00:33:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.06665","created_at":"2026-05-18T00:33:43Z"},{"alias_kind":"pith_short_12","alias_value":"LKHVRJZ3HZ7V","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_16","alias_value":"LKHVRJZ3HZ7VU2BN","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_8","alias_value":"LKHVRJZ3","created_at":"2026-05-18T12:31:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:LKHVRJZ3HZ7VU2BNSPGTGZWHR2","target":"record","payload":{"canonical_record":{"source":{"id":"1705.06665","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-05-18T15:59:30Z","cross_cats_sorted":[],"title_canon_sha256":"f5b33e3da78e4d00e8dc8fece097daad5aaee169d80bd2159ee402eceeaaa1f5","abstract_canon_sha256":"c87c533f961ba65c1d17a8d576ea12dbf7d90358a1e0578e3277f6c62dae5d55"},"schema_version":"1.0"},"canonical_sha256":"5a8f58a73b3e7f5a682d93cd3366c78e87b41b8b3476e3245de366ec71196009","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:33:43.581365Z","signature_b64":"aVLbESt3Pf/l/eUtYQgiKag6zmSoliT+gzBuUc3vD1KasJ7ruqfxd2SNjd4SvZf3abjoAUpCOX74yOs1u+l/DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5a8f58a73b3e7f5a682d93cd3366c78e87b41b8b3476e3245de366ec71196009","last_reissued_at":"2026-05-18T00:33:43.580722Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:33:43.580722Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1705.06665","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":"2026-05-18T00:33:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UbXgZQvXI6gnUKCkVjbkH2y5XHsZ4VFBmuj8p+AUSVwsaM6mqML6EQwtlvJDDX0dmZ7om2Ncu/egaNukZQABCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T07:35:48.333555Z"},"content_sha256":"e0d5b388d784bfae3a8b8a1e1e96ec87143e933d07d8cc28cea91dadc5219064","schema_version":"1.0","event_id":"sha256:e0d5b388d784bfae3a8b8a1e1e96ec87143e933d07d8cc28cea91dadc5219064"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:LKHVRJZ3HZ7VU2BNSPGTGZWHR2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"IceCube constraints on the Fermi Bubbles","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Ilya Gurwich, Nimrod Sherf, Uri Keshet","submitted_at":"2017-05-18T15:59:30Z","abstract_excerpt":"We analyze the IceCube four-year neutrino data in search of a signal from the Fermi bubbles. No signal is found from the bubbles or from their dense shell, even when taking into account the softer background. This imposes a conservative $\\xi_i<8\\%$ upper limit on the cosmic-ray ion (CRI) acceleration efficiency, and an $\\eta\\equiv \\xi_e/\\xi_i \\gtrsim0.006$ lower limit on the electron-to-ion ratio of acceleration efficiencies (at the $2\\sigma$ confidence level). For typical $\\xi_i$, a signal should surface once the number of IceCube neutrinos increases by $\\sim$an order of magnitude, unless the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.06665","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":"2026-05-18T00:33:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZIGFnbnauoKpXaWmUGRC6en0ytiCxlyKULEKHeGrRzCV8ldUQrn9Dt3X6t5ZkLvem3Nl8DB5WuuKMvvUcRHwDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T07:35:48.334012Z"},"content_sha256":"9829ef3302836e3cdf78d88571d8b1e5e023bee024a590a60501658e42abfe92","schema_version":"1.0","event_id":"sha256:9829ef3302836e3cdf78d88571d8b1e5e023bee024a590a60501658e42abfe92"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LKHVRJZ3HZ7VU2BNSPGTGZWHR2/bundle.json","state_url":"https://pith.science/pith/LKHVRJZ3HZ7VU2BNSPGTGZWHR2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LKHVRJZ3HZ7VU2BNSPGTGZWHR2/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":"2026-05-25T07:35:48Z","links":{"resolver":"https://pith.science/pith/LKHVRJZ3HZ7VU2BNSPGTGZWHR2","bundle":"https://pith.science/pith/LKHVRJZ3HZ7VU2BNSPGTGZWHR2/bundle.json","state":"https://pith.science/pith/LKHVRJZ3HZ7VU2BNSPGTGZWHR2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LKHVRJZ3HZ7VU2BNSPGTGZWHR2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:LKHVRJZ3HZ7VU2BNSPGTGZWHR2","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":"c87c533f961ba65c1d17a8d576ea12dbf7d90358a1e0578e3277f6c62dae5d55","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-05-18T15:59:30Z","title_canon_sha256":"f5b33e3da78e4d00e8dc8fece097daad5aaee169d80bd2159ee402eceeaaa1f5"},"schema_version":"1.0","source":{"id":"1705.06665","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.06665","created_at":"2026-05-18T00:33:43Z"},{"alias_kind":"arxiv_version","alias_value":"1705.06665v2","created_at":"2026-05-18T00:33:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.06665","created_at":"2026-05-18T00:33:43Z"},{"alias_kind":"pith_short_12","alias_value":"LKHVRJZ3HZ7V","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_16","alias_value":"LKHVRJZ3HZ7VU2BN","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_8","alias_value":"LKHVRJZ3","created_at":"2026-05-18T12:31:28Z"}],"graph_snapshots":[{"event_id":"sha256:9829ef3302836e3cdf78d88571d8b1e5e023bee024a590a60501658e42abfe92","target":"graph","created_at":"2026-05-18T00:33:43Z","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 analyze the IceCube four-year neutrino data in search of a signal from the Fermi bubbles. No signal is found from the bubbles or from their dense shell, even when taking into account the softer background. This imposes a conservative $\\xi_i<8\\%$ upper limit on the cosmic-ray ion (CRI) acceleration efficiency, and an $\\eta\\equiv \\xi_e/\\xi_i \\gtrsim0.006$ lower limit on the electron-to-ion ratio of acceleration efficiencies (at the $2\\sigma$ confidence level). For typical $\\xi_i$, a signal should surface once the number of IceCube neutrinos increases by $\\sim$an order of magnitude, unless the","authors_text":"Ilya Gurwich, Nimrod Sherf, Uri Keshet","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-05-18T15:59:30Z","title":"IceCube constraints on the Fermi Bubbles"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.06665","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:e0d5b388d784bfae3a8b8a1e1e96ec87143e933d07d8cc28cea91dadc5219064","target":"record","created_at":"2026-05-18T00:33:43Z","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":"c87c533f961ba65c1d17a8d576ea12dbf7d90358a1e0578e3277f6c62dae5d55","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-05-18T15:59:30Z","title_canon_sha256":"f5b33e3da78e4d00e8dc8fece097daad5aaee169d80bd2159ee402eceeaaa1f5"},"schema_version":"1.0","source":{"id":"1705.06665","kind":"arxiv","version":2}},"canonical_sha256":"5a8f58a73b3e7f5a682d93cd3366c78e87b41b8b3476e3245de366ec71196009","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5a8f58a73b3e7f5a682d93cd3366c78e87b41b8b3476e3245de366ec71196009","first_computed_at":"2026-05-18T00:33:43.580722Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:33:43.580722Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"aVLbESt3Pf/l/eUtYQgiKag6zmSoliT+gzBuUc3vD1KasJ7ruqfxd2SNjd4SvZf3abjoAUpCOX74yOs1u+l/DA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:33:43.581365Z","signed_message":"canonical_sha256_bytes"},"source_id":"1705.06665","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e0d5b388d784bfae3a8b8a1e1e96ec87143e933d07d8cc28cea91dadc5219064","sha256:9829ef3302836e3cdf78d88571d8b1e5e023bee024a590a60501658e42abfe92"],"state_sha256":"640f09ca5b20113dcb7d12a409506a29bcace9ab7c80123f9e21dd9e115a97f5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3907oGRz2SuqYrpKiN+4iYV2/LUEm1YqScfUY5Q/evICuxEVQCdia3sLUfVnWX07FkfyBfXpLhGnCOmr476+DA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T07:35:48.337576Z","bundle_sha256":"96669c40034ad2a002268a3873600a635c6c9a56d34f31e3c2959af48f8574d8"}}