{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:V4ZYKT2R5LTWCMYPDG272DMPIA","short_pith_number":"pith:V4ZYKT2R","canonical_record":{"source":{"id":"1603.02358","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-03-08T02:42:55Z","cross_cats_sorted":[],"title_canon_sha256":"becb1d68499ff3dc18fecdbeb9fca94f2c098cf415604ad7f3611fb717d4ef20","abstract_canon_sha256":"e3c1b7b267b2b086ab259877ff61ee8eb13dabb5977387f8bee578d0bdcf34d3"},"schema_version":"1.0"},"canonical_sha256":"af33854f51eae761330f19b5fd0d8f401a8381132c82a1d2a02b31a1d19ef461","source":{"kind":"arxiv","id":"1603.02358","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1603.02358","created_at":"2026-05-18T01:18:28Z"},{"alias_kind":"arxiv_version","alias_value":"1603.02358v1","created_at":"2026-05-18T01:18:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1603.02358","created_at":"2026-05-18T01:18:28Z"},{"alias_kind":"pith_short_12","alias_value":"V4ZYKT2R5LTW","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_16","alias_value":"V4ZYKT2R5LTWCMYP","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_8","alias_value":"V4ZYKT2R","created_at":"2026-05-18T12:30:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:V4ZYKT2R5LTWCMYPDG272DMPIA","target":"record","payload":{"canonical_record":{"source":{"id":"1603.02358","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-03-08T02:42:55Z","cross_cats_sorted":[],"title_canon_sha256":"becb1d68499ff3dc18fecdbeb9fca94f2c098cf415604ad7f3611fb717d4ef20","abstract_canon_sha256":"e3c1b7b267b2b086ab259877ff61ee8eb13dabb5977387f8bee578d0bdcf34d3"},"schema_version":"1.0"},"canonical_sha256":"af33854f51eae761330f19b5fd0d8f401a8381132c82a1d2a02b31a1d19ef461","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:18:28.720218Z","signature_b64":"NRGiz8S9gdpwHthcBBG6yIT9wxBBM1BexhEuH53GZbSfxihjuWKfYvfCEnMZ+CprbKqZgUDgk12hBNiV1Hf1Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"af33854f51eae761330f19b5fd0d8f401a8381132c82a1d2a02b31a1d19ef461","last_reissued_at":"2026-05-18T01:18:28.719594Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:18:28.719594Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1603.02358","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":"2026-05-18T01:18:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LCqUC2eJm4NNnVEqaVITUVaz0ZUk4UdatCaM49ZA8LH2dTXgIuFwSvQ76EBS8xXtHAwoY3klESMrg4Eb1JFjAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T17:16:37.121974Z"},"content_sha256":"5d1ed027dad4a9bfe073878397920d8dcab78cf2a549f5301bcd766e2b19d856","schema_version":"1.0","event_id":"sha256:5d1ed027dad4a9bfe073878397920d8dcab78cf2a549f5301bcd766e2b19d856"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:V4ZYKT2R5LTWCMYPDG272DMPIA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Detection of gamma-ray emission from globular clusters M 15, NGC 6397, NGC 5904, NGC 6218 and NGC 6139 with Fermi-LAT","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"J. N. Zhou, J. Z. Yan, L. Fu, L. Zhang, P. F. Zhang, Q. Z. Liu, Y. L. Xin","submitted_at":"2016-03-08T02:42:55Z","abstract_excerpt":"In the third Fermi catalogue (3FGL) there are sixteen gamma-ray globular clusters. After analyzing the recent released Pass 8 data of Fermi Large Area Telescope (LAT), we report the discovery of significant gamma-ray emission from M 15 and NGC 6397, confirm that NGC 5904 is a gamma-ray emitter and find evidence of gamma-ray emission from NGC 6218 and NGC 6139. Inter- estingly, in the globular clusters M 15, NGC 6397 and NGC 5904, millisecond pulsars (MSPs) have been found in radio or X-rays, which are strongly in support of the MSP origin of the gamma-ray emission. However, due to the relative"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1603.02358","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":"2026-05-18T01:18:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6XjZyZEskx2P0kOAIKqDuU2WfE7UGTQXqLP59EFRNLKUjih9iFXke9y5re4Yoi2wOSuQpMaGYq6MHByP7BiDCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T17:16:37.122380Z"},"content_sha256":"b1cd721b833a5420ad7f40ed61c80b18e8c51fa3360734dcc3a2d997544fc3c5","schema_version":"1.0","event_id":"sha256:b1cd721b833a5420ad7f40ed61c80b18e8c51fa3360734dcc3a2d997544fc3c5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/V4ZYKT2R5LTWCMYPDG272DMPIA/bundle.json","state_url":"https://pith.science/pith/V4ZYKT2R5LTWCMYPDG272DMPIA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/V4ZYKT2R5LTWCMYPDG272DMPIA/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":"2026-05-31T17:16:37Z","links":{"resolver":"https://pith.science/pith/V4ZYKT2R5LTWCMYPDG272DMPIA","bundle":"https://pith.science/pith/V4ZYKT2R5LTWCMYPDG272DMPIA/bundle.json","state":"https://pith.science/pith/V4ZYKT2R5LTWCMYPDG272DMPIA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/V4ZYKT2R5LTWCMYPDG272DMPIA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:V4ZYKT2R5LTWCMYPDG272DMPIA","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":"e3c1b7b267b2b086ab259877ff61ee8eb13dabb5977387f8bee578d0bdcf34d3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-03-08T02:42:55Z","title_canon_sha256":"becb1d68499ff3dc18fecdbeb9fca94f2c098cf415604ad7f3611fb717d4ef20"},"schema_version":"1.0","source":{"id":"1603.02358","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1603.02358","created_at":"2026-05-18T01:18:28Z"},{"alias_kind":"arxiv_version","alias_value":"1603.02358v1","created_at":"2026-05-18T01:18:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1603.02358","created_at":"2026-05-18T01:18:28Z"},{"alias_kind":"pith_short_12","alias_value":"V4ZYKT2R5LTW","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_16","alias_value":"V4ZYKT2R5LTWCMYP","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_8","alias_value":"V4ZYKT2R","created_at":"2026-05-18T12:30:46Z"}],"graph_snapshots":[{"event_id":"sha256:b1cd721b833a5420ad7f40ed61c80b18e8c51fa3360734dcc3a2d997544fc3c5","target":"graph","created_at":"2026-05-18T01:18:28Z","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":"In the third Fermi catalogue (3FGL) there are sixteen gamma-ray globular clusters. After analyzing the recent released Pass 8 data of Fermi Large Area Telescope (LAT), we report the discovery of significant gamma-ray emission from M 15 and NGC 6397, confirm that NGC 5904 is a gamma-ray emitter and find evidence of gamma-ray emission from NGC 6218 and NGC 6139. Inter- estingly, in the globular clusters M 15, NGC 6397 and NGC 5904, millisecond pulsars (MSPs) have been found in radio or X-rays, which are strongly in support of the MSP origin of the gamma-ray emission. However, due to the relative","authors_text":"J. N. Zhou, J. Z. Yan, L. Fu, L. Zhang, P. F. Zhang, Q. Z. Liu, Y. L. Xin","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-03-08T02:42:55Z","title":"Detection of gamma-ray emission from globular clusters M 15, NGC 6397, NGC 5904, NGC 6218 and NGC 6139 with Fermi-LAT"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1603.02358","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":"sha256:5d1ed027dad4a9bfe073878397920d8dcab78cf2a549f5301bcd766e2b19d856","target":"record","created_at":"2026-05-18T01:18:28Z","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":"e3c1b7b267b2b086ab259877ff61ee8eb13dabb5977387f8bee578d0bdcf34d3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-03-08T02:42:55Z","title_canon_sha256":"becb1d68499ff3dc18fecdbeb9fca94f2c098cf415604ad7f3611fb717d4ef20"},"schema_version":"1.0","source":{"id":"1603.02358","kind":"arxiv","version":1}},"canonical_sha256":"af33854f51eae761330f19b5fd0d8f401a8381132c82a1d2a02b31a1d19ef461","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"af33854f51eae761330f19b5fd0d8f401a8381132c82a1d2a02b31a1d19ef461","first_computed_at":"2026-05-18T01:18:28.719594Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:18:28.719594Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NRGiz8S9gdpwHthcBBG6yIT9wxBBM1BexhEuH53GZbSfxihjuWKfYvfCEnMZ+CprbKqZgUDgk12hBNiV1Hf1Dw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:18:28.720218Z","signed_message":"canonical_sha256_bytes"},"source_id":"1603.02358","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5d1ed027dad4a9bfe073878397920d8dcab78cf2a549f5301bcd766e2b19d856","sha256:b1cd721b833a5420ad7f40ed61c80b18e8c51fa3360734dcc3a2d997544fc3c5"],"state_sha256":"3eb424d599f6256070dd9592e4c4fb97b3458f9d416dd860e3f0e40d321df65b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"H2tyYazxnifL3KmpOGcFGWSL/ESJ2/OIT6HTL8rUp46V8Nl4218dkwRaCYTrBYolPM1j8jlQca59eR5E7SsIAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T17:16:37.125044Z","bundle_sha256":"f0ce7c8eb5f844f861dfaa0a93751849ec93d599e80e76f64b5f9de2e4a17268"}}