{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:ZY3NMW5UWW25PA527QRZKDB2DM","short_pith_number":"pith:ZY3NMW5U","canonical_record":{"source":{"id":"0910.3944","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-10-20T20:08:18Z","cross_cats_sorted":[],"title_canon_sha256":"a56fa4f78178bd7eabc12e46ca2c3ee3d06f956e1fad19377c1eef5f7b8f12fb","abstract_canon_sha256":"83abcebaadf0fe8a06c41b650da30da8cef268ee0adb202ab894f80c3bf0bdbf"},"schema_version":"1.0"},"canonical_sha256":"ce36d65bb4b5b5d783bafc23950c3a1b06459552d79a8926486824cd0d365e6e","source":{"kind":"arxiv","id":"0910.3944","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0910.3944","created_at":"2026-05-18T02:11:13Z"},{"alias_kind":"arxiv_version","alias_value":"0910.3944v2","created_at":"2026-05-18T02:11:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0910.3944","created_at":"2026-05-18T02:11:13Z"},{"alias_kind":"pith_short_12","alias_value":"ZY3NMW5UWW25","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_16","alias_value":"ZY3NMW5UWW25PA52","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_8","alias_value":"ZY3NMW5U","created_at":"2026-05-18T12:26:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:ZY3NMW5UWW25PA527QRZKDB2DM","target":"record","payload":{"canonical_record":{"source":{"id":"0910.3944","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-10-20T20:08:18Z","cross_cats_sorted":[],"title_canon_sha256":"a56fa4f78178bd7eabc12e46ca2c3ee3d06f956e1fad19377c1eef5f7b8f12fb","abstract_canon_sha256":"83abcebaadf0fe8a06c41b650da30da8cef268ee0adb202ab894f80c3bf0bdbf"},"schema_version":"1.0"},"canonical_sha256":"ce36d65bb4b5b5d783bafc23950c3a1b06459552d79a8926486824cd0d365e6e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:11:13.604929Z","signature_b64":"8ON7lkjB7SEifYtB36YAG5qqkoSKGJsMHlPUu6HvoqsAhiztpRLJ7zMSzySKScrplVw320ssF3+eoOv6ISOvAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ce36d65bb4b5b5d783bafc23950c3a1b06459552d79a8926486824cd0d365e6e","last_reissued_at":"2026-05-18T02:11:13.604076Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:11:13.604076Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0910.3944","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":"2026-05-18T02:11:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TkqHA8XKbRIP0Dz/sQbG3eRz2V4GpK6hKi/ncpVFNEkn2vosotRL+8s/bWOx0lRslvX57BhNAarPuTRGbMypBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T03:38:26.755812Z"},"content_sha256":"e5e2ee82e3a984b8673c2dc700010f84446e61cdb0e63cb05520e9b84ab81915","schema_version":"1.0","event_id":"sha256:e5e2ee82e3a984b8673c2dc700010f84446e61cdb0e63cb05520e9b84ab81915"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:ZY3NMW5UWW25PA527QRZKDB2DM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Localization of the X-ray Source in the Globular Cluster G1 with Chandra","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A.K.H. Kong, C.O. Heinke, F.A. Primini, H.N. Cohn, P. Barmby, P.M. Lugger, R. Di Stefano, W.H.G. Lewin","submitted_at":"2009-10-20T20:08:18Z","abstract_excerpt":"We report the most accurate X-ray position of the X-ray source in the giant globular cluster G1 in M31 by using the Chandra X-ray Observatory, Hubble Space Telescope (HST), and Canada-France-Hawaii Telescope (CFHT). G1 is clearly detected with Chandra and by cross-registering with HST and CFHT images, we derive a 1-sigma error radius of 0.15 arcsec, significantly smaller than the previous measurement by XMM-Newton. We conclude that the X-ray emission of G1 is likely to come from within the core radius of the cluster. We have considered a number of possibilities for the origin of the X-ray emis"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0910.3944","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":"2026-05-18T02:11:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3RlaIzsI4L458WDtMSM670W9lCcjREXgjkdWI9IovvJ9c5Ij46jMvQIB43iaT9YFXl1OmTAnyCOP/oFgR7NtDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T03:38:26.756582Z"},"content_sha256":"0a864e82d11a44a5d6e0e028057686df2a4188a55897e3286228d82b86607b48","schema_version":"1.0","event_id":"sha256:0a864e82d11a44a5d6e0e028057686df2a4188a55897e3286228d82b86607b48"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZY3NMW5UWW25PA527QRZKDB2DM/bundle.json","state_url":"https://pith.science/pith/ZY3NMW5UWW25PA527QRZKDB2DM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZY3NMW5UWW25PA527QRZKDB2DM/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":"2026-05-26T03:38:26Z","links":{"resolver":"https://pith.science/pith/ZY3NMW5UWW25PA527QRZKDB2DM","bundle":"https://pith.science/pith/ZY3NMW5UWW25PA527QRZKDB2DM/bundle.json","state":"https://pith.science/pith/ZY3NMW5UWW25PA527QRZKDB2DM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZY3NMW5UWW25PA527QRZKDB2DM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:ZY3NMW5UWW25PA527QRZKDB2DM","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":"83abcebaadf0fe8a06c41b650da30da8cef268ee0adb202ab894f80c3bf0bdbf","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-10-20T20:08:18Z","title_canon_sha256":"a56fa4f78178bd7eabc12e46ca2c3ee3d06f956e1fad19377c1eef5f7b8f12fb"},"schema_version":"1.0","source":{"id":"0910.3944","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0910.3944","created_at":"2026-05-18T02:11:13Z"},{"alias_kind":"arxiv_version","alias_value":"0910.3944v2","created_at":"2026-05-18T02:11:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0910.3944","created_at":"2026-05-18T02:11:13Z"},{"alias_kind":"pith_short_12","alias_value":"ZY3NMW5UWW25","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_16","alias_value":"ZY3NMW5UWW25PA52","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_8","alias_value":"ZY3NMW5U","created_at":"2026-05-18T12:26:03Z"}],"graph_snapshots":[{"event_id":"sha256:0a864e82d11a44a5d6e0e028057686df2a4188a55897e3286228d82b86607b48","target":"graph","created_at":"2026-05-18T02:11:13Z","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 most accurate X-ray position of the X-ray source in the giant globular cluster G1 in M31 by using the Chandra X-ray Observatory, Hubble Space Telescope (HST), and Canada-France-Hawaii Telescope (CFHT). G1 is clearly detected with Chandra and by cross-registering with HST and CFHT images, we derive a 1-sigma error radius of 0.15 arcsec, significantly smaller than the previous measurement by XMM-Newton. We conclude that the X-ray emission of G1 is likely to come from within the core radius of the cluster. We have considered a number of possibilities for the origin of the X-ray emis","authors_text":"A.K.H. Kong, C.O. Heinke, F.A. Primini, H.N. Cohn, P. Barmby, P.M. Lugger, R. Di Stefano, W.H.G. Lewin","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-10-20T20:08:18Z","title":"Localization of the X-ray Source in the Globular Cluster G1 with Chandra"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0910.3944","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:e5e2ee82e3a984b8673c2dc700010f84446e61cdb0e63cb05520e9b84ab81915","target":"record","created_at":"2026-05-18T02:11:13Z","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":"83abcebaadf0fe8a06c41b650da30da8cef268ee0adb202ab894f80c3bf0bdbf","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-10-20T20:08:18Z","title_canon_sha256":"a56fa4f78178bd7eabc12e46ca2c3ee3d06f956e1fad19377c1eef5f7b8f12fb"},"schema_version":"1.0","source":{"id":"0910.3944","kind":"arxiv","version":2}},"canonical_sha256":"ce36d65bb4b5b5d783bafc23950c3a1b06459552d79a8926486824cd0d365e6e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ce36d65bb4b5b5d783bafc23950c3a1b06459552d79a8926486824cd0d365e6e","first_computed_at":"2026-05-18T02:11:13.604076Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:11:13.604076Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8ON7lkjB7SEifYtB36YAG5qqkoSKGJsMHlPUu6HvoqsAhiztpRLJ7zMSzySKScrplVw320ssF3+eoOv6ISOvAg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:11:13.604929Z","signed_message":"canonical_sha256_bytes"},"source_id":"0910.3944","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e5e2ee82e3a984b8673c2dc700010f84446e61cdb0e63cb05520e9b84ab81915","sha256:0a864e82d11a44a5d6e0e028057686df2a4188a55897e3286228d82b86607b48"],"state_sha256":"e8637b3bb700e30688b7198c287d73692c9a547908db8224575902b7c108a3db"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"i2bulL2+Rh70a8tySKAJBM2aSfQplX1EybVS34nT9pXo5bMjn0GI866iobGAtRi6rNBc4jDuCj7O3XPWbA/pDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T03:38:26.760917Z","bundle_sha256":"7d06f5a210db9e5d2560f52c39b63b36e3face126e736c01312b1fa866aeb86e"}}