{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:S3KZJBYI7YFWREURCCOLBT2O5A","short_pith_number":"pith:S3KZJBYI","canonical_record":{"source":{"id":"1604.01536","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-04-06T08:22:54Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"94f78f93a6dc5abfd1188649457f41c9110535c9a62cac25d7eb6b87f2190650","abstract_canon_sha256":"c309b8c79897515e9813a8090b69224420a425bb9c3d0bb28430a6d80a85f748"},"schema_version":"1.0"},"canonical_sha256":"96d5948708fe0b689291109cb0cf4ee80446cdaa4aea8424fc10af6b1141c000","source":{"kind":"arxiv","id":"1604.01536","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.01536","created_at":"2026-05-18T01:13:48Z"},{"alias_kind":"arxiv_version","alias_value":"1604.01536v1","created_at":"2026-05-18T01:13:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.01536","created_at":"2026-05-18T01:13:48Z"},{"alias_kind":"pith_short_12","alias_value":"S3KZJBYI7YFW","created_at":"2026-05-18T12:30:41Z"},{"alias_kind":"pith_short_16","alias_value":"S3KZJBYI7YFWREUR","created_at":"2026-05-18T12:30:41Z"},{"alias_kind":"pith_short_8","alias_value":"S3KZJBYI","created_at":"2026-05-18T12:30:41Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:S3KZJBYI7YFWREURCCOLBT2O5A","target":"record","payload":{"canonical_record":{"source":{"id":"1604.01536","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-04-06T08:22:54Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"94f78f93a6dc5abfd1188649457f41c9110535c9a62cac25d7eb6b87f2190650","abstract_canon_sha256":"c309b8c79897515e9813a8090b69224420a425bb9c3d0bb28430a6d80a85f748"},"schema_version":"1.0"},"canonical_sha256":"96d5948708fe0b689291109cb0cf4ee80446cdaa4aea8424fc10af6b1141c000","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:13:48.244351Z","signature_b64":"B50GqFNkv0FL2L8Vivf/nUWvFfVcW/ZwYkaeuOuA6Lfhv+yUwXs1affyUlDjvOaZX3s7YYvpvTQa0VEg0iiDBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"96d5948708fe0b689291109cb0cf4ee80446cdaa4aea8424fc10af6b1141c000","last_reissued_at":"2026-05-18T01:13:48.243702Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:13:48.243702Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1604.01536","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":"2026-05-18T01:13:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QluFraVQqMCvdbFzfV8IcZin4jF2d60W56ouVeCEYOJrX7SEDQvg4/cyOrKHByamjDT7UepckRxgxixCnbJNDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-25T08:13:18.617521Z"},"content_sha256":"2e1a2a622f5d7f615e7d6bc560aff4a6cf576da3d5cb97eb35d897b2269b85f1","schema_version":"1.0","event_id":"sha256:2e1a2a622f5d7f615e7d6bc560aff4a6cf576da3d5cb97eb35d897b2269b85f1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:S3KZJBYI7YFWREURCCOLBT2O5A","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The X-ray light curve of the massive colliding wind Wolf-Rayet + O binary WR21a","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.SR","authors_text":"Eric Gosset, Yael Naze","submitted_at":"2016-04-06T08:22:54Z","abstract_excerpt":"Our dedicated XMM-Newton monitoring, as well as archival Chandra and Swift datasets, were used to examine the behaviour of the WN5h+O3V binary WR21a at high energies. For most of the orbit, the X-ray emission exhibits few variations. However, an increase in strength of the emission is seen before periastron, following a 1/D relative trend, where D is the separation between both components. This increase is rapidly followed by a decline due to strong absorption as the Wolf-Rayet (WR) comes in front. The fitted local absorption value appears to be coherent with a mass-loss rate of about 1x10^{-5"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.01536","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":"2026-05-18T01:13:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3vkcKRRB9+y5j/NYPKZJXFgmPFDMkKsTvcaaJa5yYCTXIZE1JpaLstBv73JhIGo9tQY7gmySYpL+fPJ6Oo1bDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-25T08:13:18.617870Z"},"content_sha256":"9f843826af7e8c1747dae585fb3d46b81e99d8161723be1ae1914ef3daa4804c","schema_version":"1.0","event_id":"sha256:9f843826af7e8c1747dae585fb3d46b81e99d8161723be1ae1914ef3daa4804c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/S3KZJBYI7YFWREURCCOLBT2O5A/bundle.json","state_url":"https://pith.science/pith/S3KZJBYI7YFWREURCCOLBT2O5A/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/S3KZJBYI7YFWREURCCOLBT2O5A/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":"2026-06-25T08:13:18Z","links":{"resolver":"https://pith.science/pith/S3KZJBYI7YFWREURCCOLBT2O5A","bundle":"https://pith.science/pith/S3KZJBYI7YFWREURCCOLBT2O5A/bundle.json","state":"https://pith.science/pith/S3KZJBYI7YFWREURCCOLBT2O5A/state.json","well_known_bundle":"https://pith.science/.well-known/pith/S3KZJBYI7YFWREURCCOLBT2O5A/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:S3KZJBYI7YFWREURCCOLBT2O5A","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":"c309b8c79897515e9813a8090b69224420a425bb9c3d0bb28430a6d80a85f748","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-04-06T08:22:54Z","title_canon_sha256":"94f78f93a6dc5abfd1188649457f41c9110535c9a62cac25d7eb6b87f2190650"},"schema_version":"1.0","source":{"id":"1604.01536","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.01536","created_at":"2026-05-18T01:13:48Z"},{"alias_kind":"arxiv_version","alias_value":"1604.01536v1","created_at":"2026-05-18T01:13:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.01536","created_at":"2026-05-18T01:13:48Z"},{"alias_kind":"pith_short_12","alias_value":"S3KZJBYI7YFW","created_at":"2026-05-18T12:30:41Z"},{"alias_kind":"pith_short_16","alias_value":"S3KZJBYI7YFWREUR","created_at":"2026-05-18T12:30:41Z"},{"alias_kind":"pith_short_8","alias_value":"S3KZJBYI","created_at":"2026-05-18T12:30:41Z"}],"graph_snapshots":[{"event_id":"sha256:9f843826af7e8c1747dae585fb3d46b81e99d8161723be1ae1914ef3daa4804c","target":"graph","created_at":"2026-05-18T01:13:48Z","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":"Our dedicated XMM-Newton monitoring, as well as archival Chandra and Swift datasets, were used to examine the behaviour of the WN5h+O3V binary WR21a at high energies. For most of the orbit, the X-ray emission exhibits few variations. However, an increase in strength of the emission is seen before periastron, following a 1/D relative trend, where D is the separation between both components. This increase is rapidly followed by a decline due to strong absorption as the Wolf-Rayet (WR) comes in front. The fitted local absorption value appears to be coherent with a mass-loss rate of about 1x10^{-5","authors_text":"Eric Gosset, Yael Naze","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-04-06T08:22:54Z","title":"The X-ray light curve of the massive colliding wind Wolf-Rayet + O binary WR21a"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.01536","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":"sha256:2e1a2a622f5d7f615e7d6bc560aff4a6cf576da3d5cb97eb35d897b2269b85f1","target":"record","created_at":"2026-05-18T01:13:48Z","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":"c309b8c79897515e9813a8090b69224420a425bb9c3d0bb28430a6d80a85f748","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-04-06T08:22:54Z","title_canon_sha256":"94f78f93a6dc5abfd1188649457f41c9110535c9a62cac25d7eb6b87f2190650"},"schema_version":"1.0","source":{"id":"1604.01536","kind":"arxiv","version":1}},"canonical_sha256":"96d5948708fe0b689291109cb0cf4ee80446cdaa4aea8424fc10af6b1141c000","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"96d5948708fe0b689291109cb0cf4ee80446cdaa4aea8424fc10af6b1141c000","first_computed_at":"2026-05-18T01:13:48.243702Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:13:48.243702Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"B50GqFNkv0FL2L8Vivf/nUWvFfVcW/ZwYkaeuOuA6Lfhv+yUwXs1affyUlDjvOaZX3s7YYvpvTQa0VEg0iiDBA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:13:48.244351Z","signed_message":"canonical_sha256_bytes"},"source_id":"1604.01536","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2e1a2a622f5d7f615e7d6bc560aff4a6cf576da3d5cb97eb35d897b2269b85f1","sha256:9f843826af7e8c1747dae585fb3d46b81e99d8161723be1ae1914ef3daa4804c"],"state_sha256":"cceb874775688188fc54e496597bb41e803e04dd84ef6931a45a814049c2b8eb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1rHroW8oTC/Zz839OusieQ4V5Cgh9PnIW0Op6HOLmjyXKKSowaeeGdfDhX/1RFNdR4kJpZllLZVN5z9modisAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-25T08:13:18.619816Z","bundle_sha256":"4795d44b567d47097d58b2099fcff54342fff10c59b305d1fee5e41b66b4b13c"}}