{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:NGAERHM6RKIJ5HOULE2IHT3MMZ","short_pith_number":"pith:NGAERHM6","canonical_record":{"source":{"id":"0911.3146","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-11-16T21:00:18Z","cross_cats_sorted":[],"title_canon_sha256":"c2243aef680f45a2a7ab510a46a38cea0ac1c2b7a21e98926777e8d646368e9f","abstract_canon_sha256":"7383fb721d2be8f65168e8c83bb91ef91bcb0689b1b3d824d5b9086f7497b5a6"},"schema_version":"1.0"},"canonical_sha256":"6980489d9e8a909e9dd4593483cf6c666a927c98462eaa1e94dcdb236d7f4ecc","source":{"kind":"arxiv","id":"0911.3146","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0911.3146","created_at":"2026-05-18T02:34:05Z"},{"alias_kind":"arxiv_version","alias_value":"0911.3146v1","created_at":"2026-05-18T02:34:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0911.3146","created_at":"2026-05-18T02:34:05Z"},{"alias_kind":"pith_short_12","alias_value":"NGAERHM6RKIJ","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_16","alias_value":"NGAERHM6RKIJ5HOU","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_8","alias_value":"NGAERHM6","created_at":"2026-05-18T12:26:00Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:NGAERHM6RKIJ5HOULE2IHT3MMZ","target":"record","payload":{"canonical_record":{"source":{"id":"0911.3146","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-11-16T21:00:18Z","cross_cats_sorted":[],"title_canon_sha256":"c2243aef680f45a2a7ab510a46a38cea0ac1c2b7a21e98926777e8d646368e9f","abstract_canon_sha256":"7383fb721d2be8f65168e8c83bb91ef91bcb0689b1b3d824d5b9086f7497b5a6"},"schema_version":"1.0"},"canonical_sha256":"6980489d9e8a909e9dd4593483cf6c666a927c98462eaa1e94dcdb236d7f4ecc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:34:05.103776Z","signature_b64":"JKs89KlzJBtppuGh0w9kw6cCrdLbiNvmb1lK5eDWKOuGfkJgJSvUiu9by5Pr9qBTw7NRz/pUeavjJH+SuMA/AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6980489d9e8a909e9dd4593483cf6c666a927c98462eaa1e94dcdb236d7f4ecc","last_reissued_at":"2026-05-18T02:34:05.103241Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:34:05.103241Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0911.3146","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":"2026-05-18T02:34:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"opQ3CvmTQLMF7i9CJxXdmLMY8PUwE2aTHh5SqumriFxLyEVHydrCbm1fY1ISiBAFCbQ441lW/iZGkkk5tlA3Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T22:14:24.144780Z"},"content_sha256":"1fb03568e4866159b1ae54e154aaf174a54aff68b70085f3945d1b637804d1db","schema_version":"1.0","event_id":"sha256:1fb03568e4866159b1ae54e154aaf174a54aff68b70085f3945d1b637804d1db"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:NGAERHM6RKIJ5HOULE2IHT3MMZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Chandra X-ray Observatory Study of PSR J1740--5340 and Candidate Millisecond Pulsars in the Globular Cluster NGC 6397","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Craig O. Heinke, Haldan N. Cohn, Jonathan E. Grindlay, Maureen van den Berg, Phyllis M. Lugger, Slavko Bogdanov","submitted_at":"2009-11-16T21:00:18Z","abstract_excerpt":"We present a deep Chandra X-ray Observatory study of the peculiar binary radio millisecond pulsar PSR J1740--5340 and candidate millisecond pulsars (MSPs) in the globular cluster NGC 6397. The X-rays from PSR J1740--5340 appear to be non-thermal and exhibit variability at the binary period. These properties suggest the presence of a relativistic intrabinary shock formed due to interaction of a relativistic rotation-powered pulsar wind and outflow from the unusual \"red-straggler/sub-subgiant\" companion. We find the X-ray source U18 to show similar X-ray and optical properties to those of PSR J1"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0911.3146","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":"2026-05-18T02:34:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vaX+cZ9sS+QmltHUbmeAYJVoHQx44P0UPfjqEbOBRR5wgfdiU769WuQN7v0aKuPheJtiqXtCFgY2hHCDrzlABA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T22:14:24.145193Z"},"content_sha256":"916a65226585160ea227b47a920957974e8dab61b98cdb4ca787f567733d2e3f","schema_version":"1.0","event_id":"sha256:916a65226585160ea227b47a920957974e8dab61b98cdb4ca787f567733d2e3f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NGAERHM6RKIJ5HOULE2IHT3MMZ/bundle.json","state_url":"https://pith.science/pith/NGAERHM6RKIJ5HOULE2IHT3MMZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NGAERHM6RKIJ5HOULE2IHT3MMZ/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":"2026-05-31T22:14:24Z","links":{"resolver":"https://pith.science/pith/NGAERHM6RKIJ5HOULE2IHT3MMZ","bundle":"https://pith.science/pith/NGAERHM6RKIJ5HOULE2IHT3MMZ/bundle.json","state":"https://pith.science/pith/NGAERHM6RKIJ5HOULE2IHT3MMZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NGAERHM6RKIJ5HOULE2IHT3MMZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:NGAERHM6RKIJ5HOULE2IHT3MMZ","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":"7383fb721d2be8f65168e8c83bb91ef91bcb0689b1b3d824d5b9086f7497b5a6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-11-16T21:00:18Z","title_canon_sha256":"c2243aef680f45a2a7ab510a46a38cea0ac1c2b7a21e98926777e8d646368e9f"},"schema_version":"1.0","source":{"id":"0911.3146","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0911.3146","created_at":"2026-05-18T02:34:05Z"},{"alias_kind":"arxiv_version","alias_value":"0911.3146v1","created_at":"2026-05-18T02:34:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0911.3146","created_at":"2026-05-18T02:34:05Z"},{"alias_kind":"pith_short_12","alias_value":"NGAERHM6RKIJ","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_16","alias_value":"NGAERHM6RKIJ5HOU","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_8","alias_value":"NGAERHM6","created_at":"2026-05-18T12:26:00Z"}],"graph_snapshots":[{"event_id":"sha256:916a65226585160ea227b47a920957974e8dab61b98cdb4ca787f567733d2e3f","target":"graph","created_at":"2026-05-18T02:34:05Z","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 present a deep Chandra X-ray Observatory study of the peculiar binary radio millisecond pulsar PSR J1740--5340 and candidate millisecond pulsars (MSPs) in the globular cluster NGC 6397. The X-rays from PSR J1740--5340 appear to be non-thermal and exhibit variability at the binary period. These properties suggest the presence of a relativistic intrabinary shock formed due to interaction of a relativistic rotation-powered pulsar wind and outflow from the unusual \"red-straggler/sub-subgiant\" companion. We find the X-ray source U18 to show similar X-ray and optical properties to those of PSR J1","authors_text":"Craig O. Heinke, Haldan N. Cohn, Jonathan E. Grindlay, Maureen van den Berg, Phyllis M. Lugger, Slavko Bogdanov","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-11-16T21:00:18Z","title":"A Chandra X-ray Observatory Study of PSR J1740--5340 and Candidate Millisecond Pulsars in the Globular Cluster NGC 6397"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0911.3146","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":"sha256:1fb03568e4866159b1ae54e154aaf174a54aff68b70085f3945d1b637804d1db","target":"record","created_at":"2026-05-18T02:34:05Z","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":"7383fb721d2be8f65168e8c83bb91ef91bcb0689b1b3d824d5b9086f7497b5a6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-11-16T21:00:18Z","title_canon_sha256":"c2243aef680f45a2a7ab510a46a38cea0ac1c2b7a21e98926777e8d646368e9f"},"schema_version":"1.0","source":{"id":"0911.3146","kind":"arxiv","version":1}},"canonical_sha256":"6980489d9e8a909e9dd4593483cf6c666a927c98462eaa1e94dcdb236d7f4ecc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6980489d9e8a909e9dd4593483cf6c666a927c98462eaa1e94dcdb236d7f4ecc","first_computed_at":"2026-05-18T02:34:05.103241Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:34:05.103241Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JKs89KlzJBtppuGh0w9kw6cCrdLbiNvmb1lK5eDWKOuGfkJgJSvUiu9by5Pr9qBTw7NRz/pUeavjJH+SuMA/AQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:34:05.103776Z","signed_message":"canonical_sha256_bytes"},"source_id":"0911.3146","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1fb03568e4866159b1ae54e154aaf174a54aff68b70085f3945d1b637804d1db","sha256:916a65226585160ea227b47a920957974e8dab61b98cdb4ca787f567733d2e3f"],"state_sha256":"dc2b123ab77102e4ee5c65921071f4d8d3d39c7b4a42282e0baf29ee46f2a648"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NhQad6Ed7AhC+qi80wos2evwi8hDAlITQ5EHCCAYTPbnbqMRyjrueYAEH0uppmz2KPehq3S5D52l0REHo0fqBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T22:14:24.147578Z","bundle_sha256":"86498ada400ddb01ca1580b12e2131b93c155dcec44fb674f3b150488bbff85d"}}