{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:3PNANKVZAUYGPCG6GFNVRNH36S","short_pith_number":"pith:3PNANKVZ","canonical_record":{"source":{"id":"0808.0889","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-08-06T17:49:17Z","cross_cats_sorted":[],"title_canon_sha256":"04de20191a15b981e1898e5977c466948dcb9d5a11fb669a7c1ef81b5b5cd1bc","abstract_canon_sha256":"8e9fbf092b19dfa7d3ce81bbd34122589db1ccd5dd43caccb6ea1cbda628f743"},"schema_version":"1.0"},"canonical_sha256":"dbda06aab905306788de315b58b4fbf48897c0e6a80fd3c65f5a30393ad80bd4","source":{"kind":"arxiv","id":"0808.0889","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0808.0889","created_at":"2026-05-18T02:15:43Z"},{"alias_kind":"arxiv_version","alias_value":"0808.0889v2","created_at":"2026-05-18T02:15:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0808.0889","created_at":"2026-05-18T02:15:43Z"},{"alias_kind":"pith_short_12","alias_value":"3PNANKVZAUYG","created_at":"2026-05-18T12:25:56Z"},{"alias_kind":"pith_short_16","alias_value":"3PNANKVZAUYGPCG6","created_at":"2026-05-18T12:25:56Z"},{"alias_kind":"pith_short_8","alias_value":"3PNANKVZ","created_at":"2026-05-18T12:25:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:3PNANKVZAUYGPCG6GFNVRNH36S","target":"record","payload":{"canonical_record":{"source":{"id":"0808.0889","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-08-06T17:49:17Z","cross_cats_sorted":[],"title_canon_sha256":"04de20191a15b981e1898e5977c466948dcb9d5a11fb669a7c1ef81b5b5cd1bc","abstract_canon_sha256":"8e9fbf092b19dfa7d3ce81bbd34122589db1ccd5dd43caccb6ea1cbda628f743"},"schema_version":"1.0"},"canonical_sha256":"dbda06aab905306788de315b58b4fbf48897c0e6a80fd3c65f5a30393ad80bd4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:15:43.875059Z","signature_b64":"1vw2gmee0lIB6SuodW15c3e0Y9VSpLO06yrKXh0pBIg2UnqqL1D064046qP2ajxagkKgZ6t1cabnBrNnAmbPDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"dbda06aab905306788de315b58b4fbf48897c0e6a80fd3c65f5a30393ad80bd4","last_reissued_at":"2026-05-18T02:15:43.874472Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:15:43.874472Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0808.0889","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":"2026-05-18T02:15:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ffzo8DcSn7bSLfQa3NcXv0X7fkCgorDnuArT83RhiPICScOsFDDT74u8HJgcuDW8fYvAO7+4VmEknNascOvhCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T02:11:42.712692Z"},"content_sha256":"f1904eb78f532cf3f7e0f07aa8bea3061dd705d9c04000f6bf5e2de607de5183","schema_version":"1.0","event_id":"sha256:f1904eb78f532cf3f7e0f07aa8bea3061dd705d9c04000f6bf5e2de607de5183"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:3PNANKVZAUYGPCG6GFNVRNH36S","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"VERITAS Discovery of >200GeV Gamma-ray Emission from the Intermediate-frequency-peaked BL Lac Object W Comae","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Cesarini, A. D. Falcone, A. Furniss, A. Imran, A. Konopelko, A. McCann, A. Weinstein, A. W. Smith, B. Zitzer, C. M. Hui, D. A. Williams, D. B. Kieda, D. Gall, D. Hanna, D. Horan, D. Pandel, D. Petry, D. Steele, E. Aliu, E. Hays, E. Roache, F. Krennrich, G. Finnegan, G. Gyuk, G. H. Gillanders, G. H. Sembroski, G. Maier, H. J. Rose, H. Krawczynski, J. A. Toner, J. E. Ward, J. Grube, J. H. Buckley, J. Holder, J. Niemiec, J. P. Finley, J. Quinn, J. S. Perkins, K. Lee, K. Ragan, L. Ciupik, L. C. Reyes, L. F. Fortson, M. Beilicke, M. Boettcher, M. J. Lang, M. K. Daniel, M. Kertzman, M. McCutcheon, M. Pohl, M. Schroedter, M. Wood, N. Karlsson, O. Celik, P. Cogan, P. Colin, P. Fortin, P. Kaaret, P. Moriarty, P. T. Reynolds, R. A. Ong, R. Guenette, R. J. White, R. Mukherjee, R. Wagner, S. A. Wissel, S. J. Fegan, S. LeBohec, S. M. Bradbury, S. P. Swordy, S. P. Wakely, T. B. Humensky, T. C. Weekes, T. Ergin, T. Nagai, V. Bugaev, VERITAS Collaboration: V. A. Acciari, V. V. Vassiliev, W. Benbow, W. Cui, Y. Butt, Y. C. K. Chow","submitted_at":"2008-08-06T17:49:17Z","abstract_excerpt":"We report the detection of very high-energy gamma-ray emission from the intermediate-frequency-peaked BL Lacertae object W Comae (z=0.102) by VERITAS. The source was observed between January and April 2008. A strong outburst of gamma-ray emission was measured in the middle of March, lasting for only four days. The energy spectrum measured during the two highest flare nights is fit by a power-law and is found to be very steep, with a differential photon spectral index of Gamma = 3.81 +- 0.35_stat +- 0.34_syst. The integral photon flux above 200GeV during those two nights corresponds to roughly "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0808.0889","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":"2026-05-18T02:15:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ecaw0cCh/0F5/+JhTPaeQEezMGnWyDY3EmOK1gr8fg5896aVh0CjkqVNxWr//jO5L1/CQVAnBrRAhBuwt6yhAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T02:11:42.713623Z"},"content_sha256":"0f3140b6b531e3568343bfdffcdde3984e8c4e30381cb71e60a78a1061c61784","schema_version":"1.0","event_id":"sha256:0f3140b6b531e3568343bfdffcdde3984e8c4e30381cb71e60a78a1061c61784"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3PNANKVZAUYGPCG6GFNVRNH36S/bundle.json","state_url":"https://pith.science/pith/3PNANKVZAUYGPCG6GFNVRNH36S/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3PNANKVZAUYGPCG6GFNVRNH36S/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":"2026-06-01T02:11:42Z","links":{"resolver":"https://pith.science/pith/3PNANKVZAUYGPCG6GFNVRNH36S","bundle":"https://pith.science/pith/3PNANKVZAUYGPCG6GFNVRNH36S/bundle.json","state":"https://pith.science/pith/3PNANKVZAUYGPCG6GFNVRNH36S/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3PNANKVZAUYGPCG6GFNVRNH36S/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:3PNANKVZAUYGPCG6GFNVRNH36S","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":"8e9fbf092b19dfa7d3ce81bbd34122589db1ccd5dd43caccb6ea1cbda628f743","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-08-06T17:49:17Z","title_canon_sha256":"04de20191a15b981e1898e5977c466948dcb9d5a11fb669a7c1ef81b5b5cd1bc"},"schema_version":"1.0","source":{"id":"0808.0889","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0808.0889","created_at":"2026-05-18T02:15:43Z"},{"alias_kind":"arxiv_version","alias_value":"0808.0889v2","created_at":"2026-05-18T02:15:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0808.0889","created_at":"2026-05-18T02:15:43Z"},{"alias_kind":"pith_short_12","alias_value":"3PNANKVZAUYG","created_at":"2026-05-18T12:25:56Z"},{"alias_kind":"pith_short_16","alias_value":"3PNANKVZAUYGPCG6","created_at":"2026-05-18T12:25:56Z"},{"alias_kind":"pith_short_8","alias_value":"3PNANKVZ","created_at":"2026-05-18T12:25:56Z"}],"graph_snapshots":[{"event_id":"sha256:0f3140b6b531e3568343bfdffcdde3984e8c4e30381cb71e60a78a1061c61784","target":"graph","created_at":"2026-05-18T02:15:43Z","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 report the detection of very high-energy gamma-ray emission from the intermediate-frequency-peaked BL Lacertae object W Comae (z=0.102) by VERITAS. The source was observed between January and April 2008. A strong outburst of gamma-ray emission was measured in the middle of March, lasting for only four days. The energy spectrum measured during the two highest flare nights is fit by a power-law and is found to be very steep, with a differential photon spectral index of Gamma = 3.81 +- 0.35_stat +- 0.34_syst. The integral photon flux above 200GeV during those two nights corresponds to roughly ","authors_text":"A. Cesarini, A. D. Falcone, A. Furniss, A. Imran, A. Konopelko, A. McCann, A. Weinstein, A. W. Smith, B. Zitzer, C. M. Hui, D. A. Williams, D. B. Kieda, D. Gall, D. Hanna, D. Horan, D. Pandel, D. Petry, D. Steele, E. Aliu, E. Hays, E. Roache, F. Krennrich, G. Finnegan, G. Gyuk, G. H. Gillanders, G. H. Sembroski, G. Maier, H. J. Rose, H. Krawczynski, J. A. Toner, J. E. Ward, J. Grube, J. H. Buckley, J. Holder, J. Niemiec, J. P. Finley, J. Quinn, J. S. Perkins, K. Lee, K. Ragan, L. Ciupik, L. C. Reyes, L. F. Fortson, M. Beilicke, M. Boettcher, M. J. Lang, M. K. Daniel, M. Kertzman, M. McCutcheon, M. Pohl, M. Schroedter, M. Wood, N. Karlsson, O. Celik, P. Cogan, P. Colin, P. Fortin, P. Kaaret, P. Moriarty, P. T. Reynolds, R. A. Ong, R. Guenette, R. J. White, R. Mukherjee, R. Wagner, S. A. Wissel, S. J. Fegan, S. LeBohec, S. M. Bradbury, S. P. Swordy, S. P. Wakely, T. B. Humensky, T. C. Weekes, T. Ergin, T. Nagai, V. Bugaev, VERITAS Collaboration: V. A. Acciari, V. V. Vassiliev, W. Benbow, W. Cui, Y. Butt, Y. C. K. Chow","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-08-06T17:49:17Z","title":"VERITAS Discovery of >200GeV Gamma-ray Emission from the Intermediate-frequency-peaked BL Lac Object W Comae"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0808.0889","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:f1904eb78f532cf3f7e0f07aa8bea3061dd705d9c04000f6bf5e2de607de5183","target":"record","created_at":"2026-05-18T02:15:43Z","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":"8e9fbf092b19dfa7d3ce81bbd34122589db1ccd5dd43caccb6ea1cbda628f743","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-08-06T17:49:17Z","title_canon_sha256":"04de20191a15b981e1898e5977c466948dcb9d5a11fb669a7c1ef81b5b5cd1bc"},"schema_version":"1.0","source":{"id":"0808.0889","kind":"arxiv","version":2}},"canonical_sha256":"dbda06aab905306788de315b58b4fbf48897c0e6a80fd3c65f5a30393ad80bd4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"dbda06aab905306788de315b58b4fbf48897c0e6a80fd3c65f5a30393ad80bd4","first_computed_at":"2026-05-18T02:15:43.874472Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:15:43.874472Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1vw2gmee0lIB6SuodW15c3e0Y9VSpLO06yrKXh0pBIg2UnqqL1D064046qP2ajxagkKgZ6t1cabnBrNnAmbPDw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:15:43.875059Z","signed_message":"canonical_sha256_bytes"},"source_id":"0808.0889","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f1904eb78f532cf3f7e0f07aa8bea3061dd705d9c04000f6bf5e2de607de5183","sha256:0f3140b6b531e3568343bfdffcdde3984e8c4e30381cb71e60a78a1061c61784"],"state_sha256":"d1e387f1e40c1bf0672a8483f3024d4e8dba33a55b19a6ae34113ef2fd9870d8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IglOQUj0/MkAYWuHlgCXIOZukm6/fts3UI8WpiFWmVvpUL96lNVtOIwWq+WDjYARtY9eP+TjfloM/wo9uTblBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T02:11:42.718560Z","bundle_sha256":"6d8a4d291d08b9034eccf3a3e5c056a18522a89c114befa2c824fa8d97d1ff45"}}